CN117928994B - Intelligent diagnosis and health state prediction and early warning method for vehicle door system based on transmission force - Google Patents
Intelligent diagnosis and health state prediction and early warning method for vehicle door system based on transmission force Download PDFInfo
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- CN117928994B CN117928994B CN202410339536.XA CN202410339536A CN117928994B CN 117928994 B CN117928994 B CN 117928994B CN 202410339536 A CN202410339536 A CN 202410339536A CN 117928994 B CN117928994 B CN 117928994B
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- 238000000034 method Methods 0.000 title claims abstract description 114
- 230000005540 biological transmission Effects 0.000 title claims abstract description 59
- 230000036541 health Effects 0.000 title claims abstract description 32
- 238000003745 diagnosis Methods 0.000 title claims abstract description 25
- 230000008569 process Effects 0.000 claims abstract description 78
- 230000007246 mechanism Effects 0.000 claims abstract description 68
- 238000001514 detection method Methods 0.000 claims abstract description 44
- 239000002390 adhesive tape Substances 0.000 claims description 81
- 230000033001 locomotion Effects 0.000 claims description 76
- 230000006835 compression Effects 0.000 claims description 65
- 238000007906 compression Methods 0.000 claims description 65
- 230000002093 peripheral effect Effects 0.000 claims description 37
- 238000007789 sealing Methods 0.000 claims description 34
- 230000003139 buffering effect Effects 0.000 claims description 13
- 238000000926 separation method Methods 0.000 claims description 12
- 230000002159 abnormal effect Effects 0.000 claims description 11
- 238000002405 diagnostic procedure Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 4
- 230000006870 function Effects 0.000 description 53
- 238000010586 diagram Methods 0.000 description 17
- 238000012544 monitoring process Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 238000005056 compaction Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009490 roller compaction Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/08—Railway vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0033—Force sensors associated with force applying means applying a pulling force
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0038—Force sensors associated with force applying means applying a pushing force
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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Abstract
The invention discloses a vehicle door system intelligent diagnosis and health state prediction early warning method based on transmission force. The door system connects the driving mechanism with the door leaf through the transmission mechanism with the sensor; the driving mechanism generates driving force which is applied to the door leaf through the driving mechanism to drive the door leaf to open or close, and the intelligent diagnosis method of the door system based on the driving force comprises the following steps: the sensor detects the driving force value in real time; setting a limit value of the transmission force value in each stage, and judging whether the limit value exceeds the limit value. The vehicle door system health state prediction and early warning method based on the driving force comprises the following steps: acquiring a driving force value of a vehicle door system in a healthy state, and drawing a standard curve; and acquiring a real-time driving force value of the vehicle door system, and drawing a real-time curve and comparing the real-time curve with a standard curve. The invention divides each stage in the door opening and closing process in detail based on the driving force, and intuitively, accurately and rapidly obtains the state of the door system according to the comparison of the driving force under the healthy state of each part and the real-time driving force, and has the characteristics of reliable detection and high processing efficiency.
Description
Technical Field
The invention relates to the technical field of traffic safety detection, in particular to a vehicle door system intelligent diagnosis and health state prediction and early warning method based on driving force.
Background
In the informatization and intellectualization industrial age, the transmission data of the rail vehicle door system are more and more important in the aspects of installation and debugging, fault analysis, technical research, real-time monitoring and the like.
The parameters of the rail vehicle door system in the fault intelligent diagnosis and health state prediction early warning processes are mostly derived from the motor, but the driving force cannot be directly obtained by the motor, and the driving force is the sum of all resistance in the door opening and closing process, and is usually obtained by converting the output torque of the motor, including the friction force of the driving mechanism, the friction force of the bearing mechanism, the resistance of door leaf movement and the like. Aiming at the situation that the driving force between a driving mechanism and a bearing mechanism of a rail vehicle door system cannot be monitored, the intelligent fault diagnosis adopted in the prior art only has a single motor acquisition value, but the movement resistance condition of a door leaf in the door opening and closing process cannot be acquired.
In addition, in reality, the driving force of each door leaf driven by the motor cannot be monitored dynamically, and the driving health state of the door leaf in the operation process cannot be monitored. In the existing diagnosis method, complex operations such as building a complex model, processing data in multiple dimensions, layering of multiple features and the like are needed, and the operation is complex and has low efficiency.
Disclosure of Invention
The invention aims to: the invention aims to provide a vehicle door system intelligent diagnosis and health state prediction early warning method based on transmission force, which is reliable in detection and high in processing efficiency.
The technical scheme is as follows: the intelligent diagnosis method of the vehicle door system based on the transmission force comprises the following steps: the provided door system comprises a door system detection device and at least one door leaf; the vehicle door system detection device comprises a driving mechanism, a transmission mechanism and a bearing mechanism; the transmission mechanism is connected with the driving mechanism and the bearing mechanism, and the bearing mechanism is connected with the door leaf; the driving mechanism generates driving force which is applied to the door leaf through the driving mechanism and the bearing mechanism to drive the door leaf to open or close, and the intelligent diagnosis method of the door system comprises the following steps: s1, dividing the door opening process and the door closing process of a car door system based on the driving mechanism, wherein a sensor is arranged in the transmission mechanism, and the sensor detects the transmission force on a door leaf in each stage in real time to obtain a real-time transmission force value; s2, setting a limit value of the driving force value in each stage, judging whether the driving force value is within the limit value in real time, and returning to S1 if the driving force value is within the limit value; otherwise, the fault of the corresponding stage is diagnosed and repaired, and then the process returns to S1.
Further, the door system comprises a slideway, and the door leaf moves on the slideway along the track of the slideway; determining a door leaf function based on control parameters of the drive mechanism;
the door controller divides the door opening process into an unlocking section, a sealing section, a curve section and a straight line section according to the door leaf function; when the door leaf is in the unlocking section, the door leaf has an unlocking function; when the sealing section is used, the door leaf has a rebound door opening function; when in a curve section, the door leaf has a plug-pull movement function; when in a straight line section, the door leaf has a straight line motion function;
Correspondingly, the door controller divides the door closing process into a straight line section, a curve section, a sealing section and a locking section according to the door leaf function; when in a straight line section, the door leaf has a straight line motion function; when in a curve section, the door leaf has a plug-pull movement function; when in a sealing section, the door leaf has a sealing function; in the locking section, the door leaf has a locking function.
Further, the driving mechanism comprises a door controller, a motor, a nut component and a screw rod; the nut component is sleeved on the screw rod, and the transmission mechanism connects the nut component with the bearing mechanism;
The motor drives the screw rod to rotate, so that the nut component moves along the length extending direction of the screw rod to drive the door leaf to be closed or opened; the driving force comprises a door opening force and a door closing force, one end of the screw rod is a door opening starting point, and the other end of the screw rod is a door closing starting point; when the door leaf is completely opened, the nut component moves from a door closing starting point to generate door closing force to drive the door leaf to be closed; when the door leaf is completely closed, the nut component moves from the starting point of the door opening, and door opening force is generated to drive the door leaf to open.
Further, the vehicle door system further comprises a finger protection adhesive tape, a peripheral adhesive tape and a balance wheel, wherein the screw rod is parallel to the width extension direction of the door leaf and is positioned right above the door leaf; the gate controller controls the position of the nut component on the screw rod by setting a designated position;
the door controller further divides the door opening process according to the designated position on the basis of the door leaf function division: the locking section corresponds to an unlocking position, the sealing section is divided into a finger protection adhesive tape compression position, a peripheral adhesive tape compression position and a balance wheel contact position, the curve section corresponds to a curve movement position, and the straight line section is divided into a straight line movement position, an in-place buffering position and an in-place holding position;
Correspondingly, the door closing process is divided as follows: the straight line segment is divided into a starting position and a linear motion position; the curve section corresponds to a curve movement position, the sealing section is divided into a balance wheel contact position, a peripheral adhesive tape compression position and a finger protection adhesive tape compression position, and the locking section is divided into a locking position and a locking stop position.
Further, the door leaf state is determined by the transmission force;
The driving force is further divided into the door opening process based on the division of the designated position: the unlocking position corresponds to an unlocking section K1, and the driving force drives the door leaf to be in an unlocking state; the finger protection adhesive tape compression position corresponds to the finger protection adhesive tape compression section K2, and at the moment, the driving force drives the finger protection adhesive tape of the door leaf from a compact compression state to a complete separation state; the peripheral adhesive tape compression position corresponds to a peripheral adhesive tape compression section K3, and at the moment, the driving force drives the peripheral adhesive tape of the door leaf from a compact compression state to a complete separation state; the balance wheel contact position corresponds to the balance wheel contact section K4, and the driving force drives the balance wheel of the door leaf from a compression state to a loosening state; the curve movement position is divided into a curve straight line section K5 and a curve arc section K6, when the curve straight line section is formed, the driving force drives the door leaf to be in a linear movement state on the slideway, and when the curve arc section is formed, the driving force drives the door leaf to be in an arc movement state on the slideway; the linear movement position corresponds to a linear section K7, and the driving force drives the door leaf to be in a linear movement state in the door opening direction; the buffer position is opened to correspond to the buffer impact section K8, and the driving force drives the door leaf to buffer impact movement; the in-place keeping position corresponds to an in-place stopping section K9, and the driving force enables the door leaf to be in an in-place stopping state;
Accordingly, the closing process is further divided into: the starting position corresponds to a door closing starting section G1, and the driving force drives the door leaf to be in a door closing starting state; the linear running position corresponds to a linear section G2, and the driving force drives the door leaf to be in a linear movement state in the door closing direction; the curve movement position is divided into a curve straight line section G3 and a curve arc section G4, when the curve arc section is formed, the driving force drives the door leaf to be in a circular arc movement state on the slideway, and when the curve straight line section is formed, the driving force drives the door leaf to be in a linear movement state on the slideway; the balance wheel contact position corresponds to the balance wheel contact section G5, and the driving force drives the balance wheels of the door leaf from a loosening state to a compacting state; the peripheral adhesive tape compression position corresponds to a peripheral adhesive tape compression section G6, and the driving force drives the peripheral adhesive tape of the door leaf from a complete separation state to a tight compression state; the finger protection adhesive tape compression position corresponds to the finger protection adhesive tape compression section G7, and at the moment, the driving force drives the finger protection adhesive tape of the door leaf from a complete separation state to a compact compression state; the locking position corresponds to a locking section G8, and the driving force drives the door leaf to be in a locking state; and the locking stop corresponds to a locking rear stop section G9, and the driving force drives the door leaf to be in a locked-in-place rear stop state at the moment.
Further, the sub-health data set of the vehicle door system is obtained through the vehicle door system detection device, the sub-health data set comprises driving force values measured under the health condition of each stage based on a control variable method, and limit values of driving force corresponding to each stage are set according to the range of the driving force values.
Further, maximum values of each stage K1, K2, K3, K4, K5, K6, K7, K8 and K9 in the door opening process are set according to the sub-health data set, the maximum values are respectively P1, P2, P3, P4, P5, P6, P7, P8 and P9, minimum values of each stage K1, K2, K3, K4, K5, K6, K7, K8 and K9 in the door opening process are set, the minimum values are respectively M1, M2, M3, M4, M5, M6, M7, M8 and M9, and the transmission force value of door opening in real time is between the maximum value and the minimum value when no faults exist in operation;
And setting maximum values of each stage G1, G2, G3, G4, G5, G6, G7, G8 and G9 in the door closing process according to the sub-health data set, wherein the maximum values are C1, C2, C3, C4, C5, C6, C7, C8 and C9 respectively, setting minimum values of each stage G1, G2, G3, G4, G5, G6, G7, G8 and G9 in the door closing process, namely N1, N2, N3, N4, N5, N6, N7, N8 and N9 respectively, and the driving force value of the door closing real time is between the maximum value and the minimum value when the operation is fault-free.
The technical scheme is as follows: the vehicle door system health state prediction and early warning method based on the driving force comprises the following steps:
setting a detection index of a vehicle door system; acquiring driving force values of all detection indexes in a healthy state based on the vehicle door system detection device, and drawing a corresponding standard curve; and acquiring a real-time transmission force value of the vehicle door system based on the vehicle door system detection device, drawing a real-time curve, comparing the real-time curve with the standard curve one by one, and sending out early warning information when the detection index state corresponding to the standard curve is abnormal.
Further, the detection indexes comprise balance wheel compaction, lower stop pin interference, slide way position, door leaf V-shaped, in-place opening buffering and door leaf sealing.
Further, the balance wheel is pressed under the health state, and the balance wheel is in a sliding state.
The beneficial effects are that: the invention has the following remarkable effects: 1. the invention has reliable detection: the resistance condition of opening and closing the door is obtained by detecting the driving force, the driving force in the opening and closing processes is collected in real time by the driving mechanism, the opening and closing processes and the closing processes are defined by the rotation direction of the motor, the defect of single data source acquisition in the prior art is overcome, on the basis of carrying out stage division by adopting the existing door leaf function of identifying the door leaf by the driving motor, each stage is further divided by the driving force in the opening and closing processes and the change condition, the accuracy is higher, the running state of the door system is diagnosed and the health state is predicted on the basis, and the reliability of detection is improved; 2. the invention has high treatment efficiency: the driving force between the driving mechanism and the bearing mechanism is used as the basis for intelligent diagnosis and health state monitoring, the driving force change in the door opening and closing process is directly monitored and diagnosed by using the vehicle door system detection device, complex operations such as building a complex model, processing of multiple dimensions, layering of multiple features and the like in the traditional vehicle door system are not needed, the maximum value and the minimum value of the driving force in each stage in the door opening and closing process are only needed to be set, and the relation between the monitored real-time driving force and the maximum value and the minimum value is calculated through simple comparison, so that the operation state of the vehicle door system is diagnosed, and the vehicle door system has the advantages of simple structure, simplicity in operation and low cost; meanwhile, the health state of each detection index of each door leaf can be monitored and diagnosed by comparing the curve drawn according to the detected real-time driving force of each door leaf with the standard curve, and the health state comprises the centering position, the lower gear pin position, the balance wheel pressing state, the sealing element state, the buffer device state, the door leaf synchronism and the like of the door leaf, so that the intelligent perception characteristic is increased, the fault point and the fault position are positioned in the application process, the diagnosis accuracy and speed are improved, and the remote monitoring and the intelligent fault diagnosis of a door system are effectively realized.
Drawings
Fig. 1 is a schematic diagram of the door leaf function dividing stage in the case of a straight-arc-straight slideway;
Fig. 2 is a schematic diagram of the door leaf function dividing stage in the case of a straight-arc slideway;
fig. 3 is a schematic diagram of the door leaf function dividing stage in the case of a linear slideway;
FIG. 4 is a schematic diagram showing the closing process stage division;
FIG. 5 is a schematic diagram of a phase division of a door opening process;
FIG. 6 is a schematic diagram of a door system detection device;
FIG. 7 is a flow chart of a single door system intelligent diagnostic method;
FIG. 8 is a flow chart of a method of intelligent diagnosis of a dual door system;
FIG. 9 is a schematic diagram of a standard curve of a door closing process based on transmission force-rotation speed-rotation angle for a double door system;
FIG. 10 is a schematic diagram of a standard curve of a door closing process based on transmission force-displacement-linear velocity for a dual door system;
FIG. 11 is a schematic diagram of a standard curve of a door opening process based on drive force-rotation speed-rotation angle for a double door system;
FIG. 12 is a schematic diagram of a standard curve of a door opening process based on drive force-displacement-linear velocity for a dual door system;
FIG. 13 is a schematic diagram of a standard curve of a door closing process based on transmission force-rotation speed-rotation angle for a single door system;
FIG. 14 is a schematic diagram of a standard curve of a door closing process based on transmission force-displacement-linear velocity for a single door system;
FIG. 15 is a schematic diagram of a standard curve of a door opening process based on drive force-rotation speed-rotation angle for a single door system;
FIG. 16 is a standard curve diagram of a door opening process based on drive force-displacement-linear velocity for a single door system;
FIG. 17 is a graph comparing the real-time curve to the standard curve of the pin interference during closing of the door;
FIG. 18 is a real-time curve-standard curve comparison of a balance wheel during closing of a door;
FIG. 19 is a graph showing the comparison of the real-time curve and the standard curve of the V-shape of the door leaf during the closing process;
fig. 20 is a real-time curve-standard curve comparison chart of the door closing process buffer.
Detailed Description
The invention is further elucidated below in connection with the drawings and the detailed description.
In the figure, 1 is a motor, 2 is a door controller, 3 is a transmission mechanism, 31 is a left transmission mechanism, 32 is a right transmission mechanism, 4 is a screw rod, 5 is a nut component, 51 is a left nut component, 52 is a right nut component, 6 is a starting point of opening a door, and 7 is a starting point of closing a door.
The invention discloses a vehicle door system intelligent diagnosis and health state prediction early warning method based on transmission force.
Referring to fig. 1 to 2, a door system is provided that includes a door system detection device and at least one door leaf; the vehicle door system detection device comprises a driving mechanism, a transmission mechanism 3 and a bearing mechanism; the transmission mechanism is connected with the driving mechanism and the bearing mechanism, and the bearing mechanism is connected with the door leaf; the driving mechanism 3 generates a driving force which is applied to the door leaf through the driving mechanism and the bearing mechanism to drive the door leaf to open or close, and the intelligent diagnosis method of the door system comprises the following steps: s1, dividing the door opening process and the door closing process of a car door system based on the driving mechanism, wherein a sensor is arranged in the transmission mechanism, and the sensor detects the transmission force on a door leaf in each stage in real time to obtain a real-time transmission force value; s2, setting a limit value of the driving force value in each stage, judging whether the driving force value is within the limit value in real time, and returning to S1 if the driving force value is within the limit value; otherwise, the fault of the corresponding stage is diagnosed and repaired, and then the process returns to S1. As shown in fig. 1, there is only one door leaf in the door system; as shown in fig. 2, the door system is a double door system, two door leaves are provided, namely a left door leaf and a right door leaf, a respective transmission mechanism 3 is arranged between the two door leaves, and the transmission force is detected independently, so that the detection precision is improved, the practicability is improved, and when one transmission mechanism 3 is damaged, the other transmission mechanism 3 can work normally.
The intelligent diagnosis method of the vehicle door system based on the driving force is specifically explained below.
Referring to fig. 3, a specific description will be given of a structure of a door system detecting device provided with two door leaves. The driving mechanism comprises a door controller 2, a motor 1, a nut assembly 5 (comprising a left nut assembly 51 and a right nut assembly 52) and a screw rod 4; the nut component 5 is sleeved on the screw rod 4, and the transmission mechanism 3 (comprising a left transmission mechanism 31 and a right transmission mechanism 32) connects the nut component 5 with the bearing mechanism. The transmission mechanism 3, the motor 1 and the door controller 2 are connected, and the door controller 2 is used for controlling an electronic control unit of the door to realize the required function and has the network communication function to send out I/O signals. The motor 1 drives the screw rod 4 to rotate, so that the nut component 5 moves along the length extending direction of the screw rod 4 to drive the door leaf to be closed or opened; the driving force comprises a door opening force and a door closing force, one end of the screw rod 4 is a door opening starting point 6, and the other end of the screw rod is a door closing starting point 7; when the door leaf is completely opened, the nut component 5 moves from the door closing starting point 7 to generate door closing force to drive the door leaf to be closed; when the door leaf is completely closed, the nut component 5 moves from the starting point 6 of the door opening, and door opening force is generated to drive the door leaf to open.
The specific control process is that when the motor 1 is driven, a sensor in the motor 1 can obtain related data such as the current motor rotating speed and the rotating angle, and then the related data is input into a gate controller system. The state monitoring of the railway vehicle door system under characteristic parameters of driving force, motor rotation angle and motor rotation speed is formed by combining the driving force data of the driving mechanism 3, characteristic data of motor rotation angle, gate controller I/O signals and switch triggering critical CAP value data, and the health state and degradation state of the vehicle door system are predicted and diagnosed and early-warned in time by the change of the driving force data of each section in the opening and closing process. In addition, the rotation angle of the motor can be calculated and converted into displacement, and the rotation speed of the motor can be calculated and converted into linear speed, so that state monitoring under characteristic parameters of driving force, displacement and linear speed can be acquired.
The vehicle door system is provided with a slideway, a finger protection adhesive tape, a peripheral adhesive tape and a balance wheel. The door leaf moves on the slideway along the track formed by the slideway. The sliding way comprises a straight sliding way and an arc sliding way, the movement mode comprises linear movement and plug movement, namely, during the opening and closing of the door, the door leaf moves along the length and width directions of the vehicle body on the outer side surface of the vehicle body, and at the moment, the door leaf moves along the arc sliding way; in the rectilinear motion, i.e., door opening and closing, the door leaf moves in the longitudinal direction of the vehicle body at the outer side surface of the vehicle body, and at this time moves along the straight sliding path. In order to realize the sealing and protecting functions of the door leaf, the door system usually uses an adhesive tape between the door leaf and the door leaf or between the door leaf and the door frame, and the adhesive tape is made of an elastic material, so that the state of the adhesive tape is gradually changed from tightness to complete contraction along with the gradual increase of the door closing force; with the increase of the door opening force, the adhesive tape state gradually becomes loose from tight until the adhesive tape is completely released. The finger protection adhesive tape is arranged at the gap between the door leaf and the door frame or between the two door leaves, so that fingers are prevented from being clamped in the door opening and closing process. The peripheral adhesive tape is arranged at other gaps of the door leaf and the door frame except the finger protection adhesive tape, so that the door leaf and the door frame are prevented from being damaged due to impact in the door opening and closing processes. The balance wheel is arranged on one side of the door leaf close to the door frame and used for ensuring the balance of the door leaf after the door is closed. The main content of balance wheel adjustment is to keep a certain distance between the pinch roller and the pressure plate, and when the door is closed, the pinch roller is contacted with the pressure plate by adjusting the pinch roller state, so that the door leaves are kept in a parallel state. When the door is closed in place, namely, when the door is forced to be closed to a certain extent, the balance wheel is contacted with the pressing plate, and the distance between the balance wheel and the pressing plate is gradually reduced along with the increase of the door closing force, so that the contact stress is larger and larger.
The door leaf function is determined according to control parameters of a motor, such as a rotation angle, a lead and the like, and comprises an unlocking function, a rebound door opening function, a plug movement function, a linear movement function, a sealing function and a locking function. The unlocking function is that the door leaf is in an open state, and can receive a door opening instruction to perform door opening action. The unlocking function is that the door leaf is in an open state, and can receive a door opening instruction to perform door opening action. The locking function is that the door leaf is in a closed state, and the door cannot receive or can shield an instruction to keep the door closed. The rebound door opening function is that the finger protection adhesive tape can be changed between a fully compressed state and a fully relaxed state. The sealing function is that the peripheral glue strip can be changed between a fully compressed state and a fully relaxed state. The plug motion function is that the door leaf starts to move along the arc slide way of the slide way to perform plug motion. The linear motion function is that the door leaf starts to move along the straight slide way of the slide way to perform linear motion.
In the invention, the door controller 2 divides the door opening process into an unlocking section, a sealing section, a curve section and a straight section according to the door leaf function. When the door leaf is in the unlocking section, the door leaf has an unlocking function; when the sealing section is used, the door leaf has a rebound door opening function; when in a curve section, the door leaf has a plug-pull movement function; when in a straight line section, the door leaf has a straight line motion function. Correspondingly, the door controller 2 divides the door closing process into a straight line section, a curve section, a sealing section and a locking section according to the door leaf function; when in a straight line section, the door leaf has a straight line motion function; when in a curve section, the door leaf has a plug-pull movement function; when in a sealing section, the door leaf has a sealing function; in the locking section, the door leaf has a locking function. Referring to fig. 4 to 6, the following three types of slide door function dividing diagrams are shown, which are respectively a straight line-arc-straight line type slide, a straight line-arc type slide, and a straight line type slide.
In the door system detection device of the present invention, the screw rod 4 is parallel to the door width extending direction and is located directly above the door. The gate controller 2 controls the position of the nut assembly 5 on the screw 4 by setting a specified position. The door controller 2 further divides the door opening process according to the designated position on the basis of the door leaf function division: the locking section corresponds to an unlocking position, the sealing section is divided into a finger protection adhesive tape compression position, a peripheral adhesive tape compression position and a balance wheel contact position, the curve section corresponds to a curve movement position, and the straight line section is divided into a straight line movement position, an in-place buffering position and an in-place holding position. Correspondingly, the door closing process is divided as follows: the straight line segment is divided into a starting position and a linear motion position; the curve section corresponds to a curve movement position, the sealing section is divided into a balance wheel contact position, a peripheral adhesive tape compression position and a finger protection adhesive tape compression position, and the locking section is divided into a locking position and a locking stop position.
Wherein, the distance between the nut component 5 and the starting point 6 of the door opening on the screw rod 4 is X1 when the screw rod is at the unlocking position; when the finger protection adhesive tape is in a compression position, the distance between the nut component 5 and the starting point 6 of the door opening on the screw rod 4 is X2; the distance between the nut component 5 and the starting point 6 of the door opening on the screw rod 4 is X3 when the peripheral adhesive tape is in the compression position; the distance between the nut component 5 and the starting point 6 of the door opening on the screw rod 4 when the balance wheel contacts the position is X4; the distance from the nut component 5 to the starting point 6 of the door opening on the screw rod 4 when the curve moves at the position is X5; the distance from the nut component 5 to the starting point 6 of the door opening on the screw rod 4 in the linear movement position is X6; when the screw rod 4 is opened to the in-place buffering position, the distance between the nut component 5 and the starting point 6 of the opening of the door is X7; the nut assembly 5 is spaced on the lead screw 4 from the start point 6 of opening the door by X8 when opened to the holding position. Correspondingly, the distance between the nut component 5 and the door closing starting point 7 on the screw rod 4 at the starting position is Y1; when the linear motion position is adopted, the distance between the nut component 5 and the door closing starting point 7 on the screw rod 4 is Y2; when the curve moves to a position, the distance between the nut component 5 and the door closing starting point 7 on the screw rod 4 is Y3; when the balance wheel contacts the position, the distance between the nut component 5 and the door closing starting point 7 on the screw rod 4 is Y4; the distance between the nut component 5 and the door closing starting point 7 on the screw rod 4 is Y5 when the peripheral adhesive tape is in a compression position, and the distance between the nut component 5 and the door closing starting point 7 on the screw rod 4 is Y6 when the adhesive tape is in a finger protection compression position; when in a locking position, the distance between the nut component 5 and the door closing starting point 7 on the screw rod 4 is Y7; in the locking stop position, the nut assembly 5 is located on the screw 4 at a distance Y8 from the door closing start point 7. The above distances are interval values.
The door leaf state is determined by the driving force. Referring to fig. 7, the driving force is substantially reduced during the door opening process. The driving force is further divided into the door opening process based on the division of the designated position: the unlocking position corresponds to an unlocking section K1, and the driving force drives the door leaf to be in an unlocking state; the finger protection adhesive tape compression position corresponds to the finger protection adhesive tape compression section K2, and at the moment, the driving force drives the finger protection adhesive tape of the door leaf from a compact compression state to a complete separation state; the peripheral adhesive tape compression position corresponds to a peripheral adhesive tape compression section K3, and at the moment, the driving force drives the peripheral adhesive tape of the door leaf from a compact compression state to a complete separation state; the balance wheel contact position corresponds to the balance wheel contact section K4, and the driving force drives the balance wheel of the door leaf from a compression state to a loosening state; the curve movement position is divided into a curve straight line section K5 and a curve arc section K6, when the curve straight line section is formed, the driving force drives the door leaf to be in a linear movement state on the slideway, and when the curve arc section is formed, the driving force drives the door leaf to be in an arc movement state on the slideway; the linear movement position corresponds to a linear section K7, and the driving force drives the door leaf to be in a linear movement state in the door opening direction; the buffer position is opened to correspond to the buffer impact section K8, and the driving force drives the door leaf to buffer impact movement; the open-in-place holding position corresponds to the open-in-place stopping section K9, and the driving force enables the door leaf to be in an open-in-place stopping state. Accordingly, as shown in fig. 8, the driving force is substantially increased during the closing process, and the closing process is further divided into: the starting position corresponds to a door closing starting section G1, and the driving force drives the door leaf to be in a door closing starting state; the linear running position corresponds to a linear section G2, and the driving force drives the door leaf to be in a linear movement state in the door closing direction; the curve movement position is divided into a curve straight line section G3 and a curve arc section G4, when the curve arc section is formed, the driving force drives the door leaf to be in a circular arc movement state on the slideway, and when the curve straight line section is formed, the driving force drives the door leaf to be in a linear movement state on the slideway; the balance wheel contact position corresponds to the balance wheel contact section G5, and the driving force drives the balance wheels of the door leaf from a loosening state to a compacting state; the peripheral adhesive tape compression position corresponds to a peripheral adhesive tape compression section G6, and the driving force drives the peripheral adhesive tape of the door leaf from a complete separation state to a tight compression state; the finger protection adhesive tape compression position corresponds to the finger protection adhesive tape compression section G7, and at the moment, the driving force drives the finger protection adhesive tape of the door leaf from a complete separation state to a compact compression state; the locking position corresponds to a locking section G8, and the driving force drives the door leaf to be in a locking state; and the locking stop corresponds to a locking rear stop section G9, and the driving force drives the door leaf to be in a locked-in-place rear stop state at the moment.
As shown in table 1 and fig. 7, the door is opened by dividing the door by the rotation angle and rotation speed of the motor according to the door function, the position of the nut assembly 5 on the screw 4, and the door status. When dividing according to the position, the fineness degree is better than that of the method of dividing according to the function, and the fineness degree of the door leaf state division is better than that of the method of dividing according to the position. In the door opening process, the first time of function division is divided into a locking section, a sealing section, a curve section and a straight line section; dividing the second time of dividing into locking sections according to the positions into unlocking positions, dividing the sealing sections into finger protection adhesive tape compression positions, peripheral adhesive tape compression positions and balance wheel contact positions, and dividing the curve sections into curve movement positions, and dividing the straight line sections into straight line movement positions, opening in-place buffer positions and opening in-place holding positions; according to the third division of door leaf state, the unblock position corresponds unblock section K1, finger protection adhesive tape compressed position corresponds finger protection adhesive tape compressed section K2 peripheral adhesive tape compressed section K3, balance wheel contact position corresponds balance wheel contact section K4, bend motion position divide into bend straightway K5, bend circular arc section K6, rectilinear motion position corresponds straightway K7, open to put in place buffering position corresponds buffering striking section K8, open to put in place holding position corresponds to open to put in place stop section K9.
Table 1 schematic diagram of stage division of door opening process
Accordingly, as shown in table 2 and fig. 8, parameters such as rotation angle and rotation speed of the motor are used for dividing the door according to the door function, the position interval of the nut assembly 5 on the screw rod 4 and the door state. When dividing according to the position, the fineness degree is better than that of the method of dividing according to the function, and the fineness degree of the door leaf state division is better than that of the method of dividing according to the position. The door closing process is divided into a straight line section, a curve section, a sealing section and a locking section by the first division of the door leaf function. When the nut component 5 is divided into the positions of the screw rods 4, the second division is performed on the basis of the function division, the fineness is better than that of the function division, and the straight line segment is divided into a starting position and a straight line motion position; the curve section corresponds to a curve movement position, the sealing section is divided into a balance wheel contact position, a peripheral adhesive tape compression position and a finger protection adhesive tape compression position, and the locking section is divided into a locking position and a locking stop position. When dividing according to the door leaf state, the dividing is performed for the third time on the basis of the position dividing, the dividing fineness is better than that of the method for dividing according to the position of the screw rod 4 of the nut assembly 5, the starting position corresponds to a door closing starting section G1, the linear running position corresponds to a linear section G2, the curve movement position is divided into a curve linear section G3 and a curve circular section G4, the balance wheel contact position corresponds to a balance wheel contact section G5, the peripheral adhesive tape compression position corresponds to a peripheral adhesive tape compression section G6, the finger protection adhesive tape compression position corresponds to a finger protection adhesive tape compression section G7, the locking position corresponds to a locking section G8, and the locking stop section G9 corresponds to a locking stop.
TABLE 2 schematic diagram of the phase division of the door leaf closing process
Setting the limits for each stage includes the following: and carrying out fault simulation of the vehicle door system, and acquiring a sub-health data set of the vehicle door system through the vehicle door system detection device, wherein the sub-health data set comprises driving force values measured under the health condition of each stage based on a control variable method, and setting limit values of driving force corresponding to each stage according to the range of the driving force values. Specifically, a control variable method is described by taking K1 as an example, K2, K3, K4, K5, K6, K7, K8 and K9 are kept normal, the limit value of the driving force in the normal state of the K1 stage is continuously adjusted, the range of the driving force value at the moment is continuously tested and obtained, the limit value of the driving force corresponding to the K1 stage is determined, and a sub-health data set is recorded. By the above process, the maximum values of each stage K1, K2, K3, K4, K5, K6, K7, K8, K9 in the door opening process are respectively P1, P2, P3, P4, P5, P6, P7, P8, P9 according to the sub-health data set, the minimum values of each stage K1, K2, K3, K4, K5, K6, K7, K8, K9 in the door opening process are respectively M1, M2, M3, M4, M5, M6, M7, M8, M9, and the transmission force value of the door opening in real time is between the maximum value and the minimum value when the operation is fault-free. And setting maximum values of each stage G1, G2, G3, G4, G5, G6, G7, G8 and G9 in the door closing process according to the sub-health data set, wherein the maximum values are C1, C2, C3, C4, C5, C6, C7, C8 and C9 respectively, setting minimum values of each stage G1, G2, G3, G4, G5, G6, G7, G8 and G9 in the door closing process, namely N1, N2, N3, N4, N5, N6, N7, N8 and N9 respectively, and the driving force value of the door closing real time is between the maximum value and the minimum value when the operation is fault-free.
Specifically, according to the data content collected by the sub-health data set, the maximum value and the minimum value of the driving force corresponding to each stage in the door opening process and the door closing process are set in sequence, the limit is accurately divided for each stage based on the driving force, during the healthy operation, the driving force value of the K1 stage is between M1 and P1, the driving force value of the K2 stage is between M2 and P2, the driving force value of the K3 stage is between M3 and P3, the driving force value of the K4 stage is between M4 and P4, the driving force value of the K5 stage is between M5 and P5, the driving force value of the K6 stage is between M6 and P6, the driving force value of the K7 stage is between M7 and P7, the driving force value of the K8 stage is between M8 and P8, and the driving force value of the K9 stage is between M9 and P9. In the door closing process, the G1 stage transmission force value is between N1 and C1, the G2 stage transmission force value is between N2 and C2, the G3 stage transmission force value is between N3 and C3, the G4 stage transmission force value is between N4 and C4, the G5 stage transmission force value is between N5 and C5, the G6 stage transmission force value is between N6 and C6, the G7 stage transmission force value is between N7 and C7, the G8 stage transmission force value is between N8 and C8, and the G9 stage transmission force value is between N9 and C9.
In addition, the invention discloses a vehicle door system health state prediction and early warning method based on transmission force, which comprises the steps of setting detection indexes of a vehicle door system; acquiring driving force values of all detection indexes in a healthy state based on the vehicle door system detection device, and drawing a corresponding standard curve; and acquiring a real-time transmission force value of the vehicle door system based on the vehicle door system detection device, drawing a real-time curve, comparing the real-time curve with the standard curve one by one, and sending out early warning information when the detection index state corresponding to the standard curve is abnormal.
In the invention, the detection indexes comprise balance wheel compaction, lower stop pin interference, slide way position, door leaf V-shaped, in-place opening buffering and door leaf sealing. The balance wheel is pressed under the health state, and the balance wheel is in a sliding state. Specifically, the balance wheel compresses: the balance wheel is arranged on two sides of the door leaf, when the door is in a healthy state, the balance wheel presses the door leaf, the door leaves are parallel to each other, the roller contacts the pressing plate and is not easy to rotate, and the gap between the step of the pressing wheel shaft and the step of the pressing wheel groove on the door leaf meets the minimum and is not interfered with the door leaf. Under the condition that the lower gear pin interferes with the health state, the baffle pin is in a certain clearance with the bottom of the threshold position, and the clearance of the inner side surface meets the standard. When the door leaf is in a V-shaped healthy state, the door leaf is required to be positioned at the junction of a straight channel and a curve, the dimension of the downward position of the door carrying frame is X1, and the dimension of the upward position of the downward slide channel is X2. Under the healthy state of opening and buffering in place, the buffering impact force of the opening and closing movement of the two door leaves is F L and F R respectively, and the difference value of the buffering impact force is within the required range. The door leaf seals under healthy state, and door leaf finger protection adhesive tape interval and peripheral adhesive tape interval satisfy certain standard. The installation distance of the upper slide rail in the vehicle width direction and the relative distance in the vehicle length direction meet certain standards when the upper slide rail is in a healthy state.
Referring to fig. 9 to 16, the state monitoring of a single door system (i.e. a single door leaf) and a double door system (two door leaves) under characteristic parameters of driving force, motor rotation angle, motor rotation speed and characteristic parameters of driving force, displacement and linear speed is shown, and the detected detection indexes of each stage in the opening and closing process are standard curves of the driving force measured in a healthy state. Because the driving force value is different between the health state and the abnormal state, the drawn real-time curve is also different from the standard curve, and whether the detection index is healthy is determined according to the position and the size change of the difference. Referring to fig. 17 to 20, the conditions of balance wheel compression, lower shift pin interference, upper slide position, door leaf V-shape, open-in-place buffering, door leaf sealing and the like are determined according to the image comparison of the real-time curve and the standard curve. When the door leaf is detected, the change condition of the real-time value of the driving force at each detection index is detected, and the health states of the balance wheel compaction, the lower gear pin interference, the buffer head position, the upper slide way position and the door leaf V shape are diagnosed according to the door opening and closing force. The vehicle door system comprises a single door system and a double door system. When the vehicle door system is a double-door system, the health states of the vehicle door at all detection indexes are diagnosed according to the door opening force of the left door and the door opening force of the right door, namely the left pinch roller compaction, the right pinch roller compaction, the left lower stop pin interference, the right lower stop pin interference, the left buffer head position, the right buffer head position, the left upper slide way position, the right upper slide way position, the left lower swing arm state, the right lower swing arm state and the door leaf V-shaped health state, and the health states of the vehicle door at all detection indexes are diagnosed according to the health data of the left door driving force and the right door driving force, so that the fault conditions of the left door and the right door are respectively judged. When the vehicle door system is a single door system, the health states of balance wheel compaction, lower stop pin interference, buffer head position, upper slide rail position and door leaf V shape are diagnosed according to door opening and closing force.
When it is diagnosed that the health state of the detection index is abnormal, the position corresponding to the detection index needs to be adjusted, and the adjustment method is approximately as follows. When the balance wheel is abnormal, the nut pair is rotated, the door leaf is slightly opened, and the balance pressing wheel can flexibly rotate. When the interference of the lower stop pin is abnormal, the adjustment of the long waist hole of the adjusting gasket and the stop pin support seat is adopted to enable the stop pin to be in clearance with the inner side of the embedded block. When the position of the upper slide way is abnormal, the vehicle door is placed at the opening position, the upper slide way mounting nut is loosened, and the mounting position of the upper slide way in the vehicle width direction or the vehicle length direction is adjusted. When the buffer head is opened in place and the buffer is abnormal, the nut is loosened, the position of one buffer head is screwed to the bottom, the opening size is adjusted by the advancing and retreating position of the other buffer head, the buffer head screwed to the maximum position is adjusted to be in contact with the buffer head collision plate, the door is opened and closed for several times manually, the gap between the buffer head and the collision plate is eliminated, and the nut is tightened to make anti-loose marks. When the V-shaped door leaf is abnormal, the single side door is firstly adjusted, and then two doors are adjusted. The fixing screw on the portal frame is loosened, but the eccentric wheel is not completely loosened, the wrench is used for rotating the eccentric wheel, so that the difference between the upper size and the lower size of the door leaf is within a required range, then the wrench is used for fixing the eccentric wheel, and the hexagon socket head cap screw is screwed after the hexagon socket head cap screw is screwed. When the door leaf is abnormal in sealing, if the distance between the finger protection adhesive tapes does not meet the requirement, the relative positions of the screw sleeves at the left side and the right side and the nuts are adjusted.
Claims (9)
1. The intelligent diagnosis method for the door system based on the transmission force is characterized in that the provided door system comprises a door system detection device and at least one door leaf; the vehicle door system detection device comprises a driving mechanism, a transmission mechanism and a bearing mechanism; the transmission mechanism is connected with the driving mechanism and the bearing mechanism, and the bearing mechanism is connected with the door leaf; the driving mechanism generates driving force which is applied to the door leaf through the driving mechanism and the bearing mechanism to drive the door leaf to open or close, and the intelligent diagnosis method of the door system comprises the following steps:
S1, dividing the door opening process and the door closing process of a car door system based on the driving mechanism, wherein a sensor is arranged in the transmission mechanism, and the sensor detects the transmission force on a door leaf in each stage in real time to obtain a real-time transmission force value;
S2, setting a limit value of the driving force value in each stage, judging whether the driving force value is within the limit value in real time, and returning to S1 if the driving force value is within the limit value; otherwise, the fault of the corresponding stage is diagnosed and repaired, and then S1 is returned;
The driving mechanism comprises a door controller, a motor, a nut component and a screw rod; the nut component is sleeved on the screw rod, and the transmission mechanism connects the nut component with the bearing mechanism; the motor drives the screw rod to rotate, so that the nut component moves along the length extending direction of the screw rod to drive the door leaf to be closed or opened; the driving force comprises a door opening force and a door closing force, one end of the screw rod is a door opening starting point, and the other end of the screw rod is a door closing starting point; when the door leaf is completely opened, the nut component moves from a door closing starting point to generate door closing force to drive the door leaf to be closed; when the door leaf is completely closed, the nut component moves from the starting point of the door opening, and door opening force is generated to drive the door leaf to open.
2. The driving force-based intelligent diagnosis method for a door system according to claim 1, wherein said door system comprises a slide on which a door leaf moves along a trajectory of said slide; determining a door leaf function based on control parameters of the drive mechanism; the door controller divides the door opening process into an unlocking section, a sealing section, a curve section and a straight line section according to the door leaf function; when the door leaf is in the unlocking section, the door leaf has an unlocking function; when the sealing section is used, the door leaf has a rebound door opening function; when in a curve section, the door leaf has a plug-pull movement function; when in a straight line section, the door leaf has a straight line motion function;
Correspondingly, the door controller divides the door closing process into a straight line section, a curve section, a sealing section and a locking section according to the door leaf function; when in a straight line section, the door leaf has a straight line motion function; when in a curve section, the door leaf has a plug-pull movement function; when in a sealing section, the door leaf has a sealing function; in the locking section, the door leaf has a locking function.
3. The intelligent diagnosis method for the door system based on the driving force according to claim 2, wherein the door system further comprises a finger protection adhesive tape, a peripheral adhesive tape and a balance wheel, and the screw rod is parallel to the width extension direction of the door leaf and is positioned right above the door leaf; the gate controller controls the position of the nut component on the screw rod by setting a designated position; the door controller further divides the door opening process according to the designated position on the basis of the door leaf function division: the locking section corresponds to an unlocking position, the sealing section is divided into a finger protection adhesive tape compression position, a peripheral adhesive tape compression position and a balance wheel contact position, the curve section corresponds to a curve movement position, and the straight line section is divided into a straight line movement position, an in-place buffering position and an in-place holding position;
Correspondingly, the door closing process is divided as follows: the straight line segment is divided into a starting position and a linear motion position; the curve section corresponds to a curve movement position, the sealing section is divided into a balance wheel contact position, a peripheral adhesive tape compression position and a finger protection adhesive tape compression position, and the locking section is divided into a locking position and a locking stop position.
4. The intelligent diagnostic method for a door system based on a driving force according to claim 3, wherein a door leaf state is determined by the magnitude of the driving force; the driving force is further divided into the door opening process based on the division of the designated position: the unlocking position corresponds to an unlocking section K1, and the driving force drives the door leaf to be in an unlocking state; the finger protection adhesive tape compression position corresponds to the finger protection adhesive tape compression section K2, and at the moment, the driving force drives the finger protection adhesive tape of the door leaf from a compact compression state to a complete separation state; the peripheral adhesive tape compression position corresponds to a peripheral adhesive tape compression section K3, and at the moment, the driving force drives the peripheral adhesive tape of the door leaf from a compact compression state to a complete separation state; the balance wheel contact position corresponds to the balance wheel contact section K4, and the driving force drives the balance wheel of the door leaf from a compression state to a loosening state; the curve movement position is divided into a curve straight line section K5 and a curve arc section K6, when the curve straight line section is formed, the driving force drives the door leaf to be in a linear movement state on the slideway, and when the curve arc section is formed, the driving force drives the door leaf to be in an arc movement state on the slideway; the linear movement position corresponds to a linear section K7, and the driving force drives the door leaf to be in a linear movement state in the door opening direction; the buffer position is opened to correspond to the buffer impact section K8, and the driving force drives the door leaf to buffer impact movement; the in-place keeping position corresponds to an in-place stopping section K9, and the driving force enables the door leaf to be in an in-place stopping state;
Accordingly, the closing process is further divided into: the starting position corresponds to a door closing starting section G1, and the driving force drives the door leaf to be in a door closing starting state; the linear running position corresponds to a linear section G2, and the driving force drives the door leaf to be in a linear movement state in the door closing direction; the curve movement position is divided into a curve straight line section G3 and a curve arc section G4, when the curve arc section is formed, the driving force drives the door leaf to be in a circular arc movement state on the slideway, and when the curve straight line section is formed, the driving force drives the door leaf to be in a linear movement state on the slideway; the balance wheel contact position corresponds to the balance wheel contact section G5, and the driving force drives the balance wheels of the door leaf from a loosening state to a compacting state; the peripheral adhesive tape compression position corresponds to a peripheral adhesive tape compression section G6, and the driving force drives the peripheral adhesive tape of the door leaf from a complete separation state to a tight compression state; the finger protection adhesive tape compression position corresponds to the finger protection adhesive tape compression section G7, and at the moment, the driving force drives the finger protection adhesive tape of the door leaf from a complete separation state to a compact compression state; the locking position corresponds to a locking section G8, and the driving force drives the door leaf to be in a locking state; and the locking stop corresponds to a locking rear stop section G9, and the driving force drives the door leaf to be in a locked-in-place rear stop state at the moment.
5. The intelligent diagnosis method for the door system based on the driving force according to claim 4, wherein the door system detection device is used for acquiring a sub-health data set of the door system, the sub-health data set comprises driving force values measured under the health condition of each stage based on a control variable method, and the limit value of the driving force corresponding to each stage is set according to the range of the driving force values.
6. The intelligent diagnosis method of a vehicle door system based on driving force according to claim 5, wherein maximum values of each stage K1, K2, K3, K4, K5, K6, K7, K8, K9 in the door opening process are respectively P1, P2, P3, P4, P5, P6, P7, P8, P9, and minimum values of each stage K1, K2, K3, K4, K5, K6, K7, K8, K9 in the door opening process are respectively M1, M2, M3, M4, M5, M6, M7, M8, M9, and driving force values in the door opening process in real time are between the maximum values and the minimum values when no fault occurs in operation are set according to a sub-health data set;
And setting maximum values of each stage G1, G2, G3, G4, G5, G6, G7, G8 and G9 in the door closing process according to the sub-health data set, wherein the maximum values are C1, C2, C3, C4, C5, C6, C7, C8 and C9 respectively, setting minimum values of each stage G1, G2, G3, G4, G5, G6, G7, G8 and G9 in the door closing process, namely N1, N2, N3, N4, N5, N6, N7, N8 and N9 respectively, and the driving force value of the door closing real time is between the maximum value and the minimum value when the operation is fault-free.
7. A health state prediction and early warning method of a power transmission-based door system intelligent diagnosis method according to any one of claims 1 to 6, characterized by comprising: setting a detection index of a vehicle door system; acquiring driving force values of all detection indexes in a healthy state based on the vehicle door system detection device, and drawing a corresponding standard curve; and acquiring a real-time transmission force value of the vehicle door system based on the vehicle door system detection device, drawing a real-time curve, comparing the real-time curve with the standard curve one by one, and sending out early warning information when the detection index state corresponding to the standard curve is abnormal.
8. The health state prediction and early warning method according to claim 7, wherein the detection indexes comprise balance wheel compression, lower gear pin interference, slide way position, door leaf V-shape, in-place buffering and door leaf sealing.
9. The method of claim 8, wherein the balance is in a slidable state when the balance is in a healthy state.
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| CN117928994A (en) | 2024-04-26 |
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