CN111605526A - Brake pressure adjusting method, device, equipment and readable storage medium - Google Patents
Brake pressure adjusting method, device, equipment and readable storage medium Download PDFInfo
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- CN111605526A CN111605526A CN202010497742.5A CN202010497742A CN111605526A CN 111605526 A CN111605526 A CN 111605526A CN 202010497742 A CN202010497742 A CN 202010497742A CN 111605526 A CN111605526 A CN 111605526A
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- pressure value
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/1755—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/1755—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
- B60T8/17551—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve determining control parameters related to vehicle stability used in the regulation, e.g. by calculations involving measured or detected parameters
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- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses a brake pressure adjusting method, a brake pressure adjusting device, brake pressure adjusting equipment and a readable storage medium, wherein the method comprises the following steps: the method comprises the steps of obtaining a current braking pressure value and an expected braking pressure value of an automobile braking unit; comparing the current braking pressure value with the expected braking pressure value, and determining the working state of the automobile braking unit to be converted according to the comparison result; generating a corresponding driving control signal according to the working state to be converted; and adjusting the current brake pressure value according to the driving control signal. The invention can enable the automobile brake unit to generate actual brake pressure following the expected brake pressure, ensures the stability of the output pressure of the brake system when the automobile brakes, and improves the safety of automatic emergency braking of the automobile.
Description
Technical Field
The invention relates to the technical field of automatic control of automobiles, in particular to a braking pressure adjusting method, a braking pressure adjusting device, braking pressure adjusting equipment and a readable storage medium.
Background
In recent years, automobile intellectualization is rapidly developed, and the requirement on the safety performance of the automobile is higher and higher. The brake system is particularly important for Automatic Emergency Braking (AEB), which is the most direct implement of the automatic emergency braking and largely determines the longitudinal active safety performance of the vehicle.
In order to ensure the safety of automatic emergency braking of the automobile, the real-time performance and the accuracy of a braking system must be ensured. In the prior art, the pressure value of the automobile brake system is unstable during braking, so that instability is brought to the safety of automatic emergency braking of the automobile. Therefore, how to ensure the pressure stability of the brake system when the automobile brakes is an urgent technical problem to be solved.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a braking pressure adjusting method, a braking pressure adjusting device, braking pressure adjusting equipment and a readable storage medium, and aims to solve the technical problem that in the prior art, when an automobile braking system brakes, a pressure value is unstable.
To achieve the above object, the present invention provides a brake pressure adjusting method, comprising the steps of:
acquiring a current brake pressure value and an expected brake pressure value of an automobile brake unit;
comparing the current brake pressure value with the expected brake pressure value, and determining the working state of the automobile brake unit to be converted according to the comparison result;
generating a corresponding driving control signal according to the working state to be converted;
and adjusting the current brake pressure value according to the driving control signal.
Preferably, the comparing the current braking pressure value with the expected braking pressure value, and determining the working state of the automobile braking unit to be converted according to the comparison result specifically includes:
the current braking pressure value and the expected braking pressure value are subjected to difference so as to obtain an absolute difference value between the current braking pressure value and the expected braking pressure value;
judging whether the absolute difference value is larger than a preset threshold value or not;
if not, the working state to be converted of the automobile brake unit is judged to be the current brake pressure value.
Preferably, the adjusting the current braking pressure value according to the driving control signal specifically includes:
opening a pressure limiting valve, a pressure increasing valve and a pump motor of the automobile brake unit according to the driving control signal, and closing a suction valve and a pressure reducing valve;
and maintaining the current rotating speed of the pump motor according to the driving control signal so as to maintain the current braking pressure value.
Preferably, after determining whether the absolute difference is greater than a preset threshold, the method further includes:
if so, judging whether the current brake pressure value is larger than the expected brake pressure value;
and if so, judging that the working state to be converted of the automobile brake unit is the reduction of the current brake pressure value.
Preferably, the adjusting the current braking pressure value according to the driving control signal specifically includes:
opening a suction valve, a pressure reducing valve, a pressure limiting valve and a pressure increasing valve of the automobile brake unit according to the driving control signal, and closing a pump motor;
and reducing the rotating speed of the pump motor according to the driving control signal so as to reduce the current braking pressure value.
Preferably, if so, after determining whether the current braking pressure value is greater than the expected braking pressure value, the method further includes:
if not, the working state to be converted of the automobile brake unit is judged to be the current brake pressure value.
Preferably, the adjusting the current braking pressure value according to the driving control signal specifically includes:
opening a suction valve, a pressure limiting valve and a pump motor of the automobile brake unit according to the driving control signal, and closing a pressure reducing valve and a pressure increasing valve;
and increasing the rotating speed of the pump motor according to the driving control signal so as to increase the current braking pressure value.
In addition, in order to achieve the above object, the present invention also provides a brake pressure adjusting device, which includes a pressure sensor module and a tracking control decision module; the pressure sensor module is connected with the tracking control decision module:
the pressure sensor module is used for acquiring a current brake pressure value and transmitting the current brake pressure to the tracking control decision module;
the tracking control decision module is used for acquiring an expected brake pressure value, comparing the current brake pressure value with the expected brake pressure value and acquiring a comparison result;
the tracking control decision module is also used for determining the working state of the automobile brake unit to be converted according to the comparison result;
and the tracking control decision module is also used for generating a driving control signal according to the working state to be converted and adjusting the current braking pressure value according to the driving control signal.
Further, to achieve the above object, the present invention also provides a brake pressure adjusting apparatus, comprising: a memory, a processor, and a brake pressure adjustment program stored on the memory and executable on the processor, the brake pressure adjustment program configured to implement the steps of brake pressure adjustment as described above.
Further, to achieve the above object, the present invention also provides a computer-readable storage medium having stored thereon a brake pressure adjusting program which, when executed by a processor, implements the steps of the brake pressure adjusting method as described above.
The method comprises the steps of obtaining a current braking pressure value and an expected braking pressure value of an automobile braking unit, and comparing the current braking pressure value with the expected braking pressure value to obtain a comparison result; determining the working state of the automobile brake unit to be converted according to the comparison result; and generating a driving control signal according to the working state to be converted, and adjusting the current braking pressure value according to the driving control signal. The invention can enable the automobile brake unit to generate actual brake pressure following the expected brake pressure, ensures the stability of the output pressure of the brake system when the automobile brakes, and improves the safety of automatic emergency braking of the automobile.
Drawings
Fig. 1 is a schematic structural diagram of a picture caching device in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart diagram of one embodiment of a brake pressure regulation method of the present invention;
fig. 3 is a schematic structural view of an embodiment of the brake pressure adjusting apparatus of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a central control host in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the brake pressure adjusting apparatus may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may comprise a Display screen (Display), an input unit such as keys, and the optional user interface 1003 may also comprise a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the brake pressure regulating device and may include more or fewer components than those shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and a brake pressure adjusting program.
In the brake pressure adjusting apparatus shown in fig. 1, the network interface 1004 is mainly used for connecting a terminal device, and performing data communication with the terminal device; the user interface 1003 is mainly used for receiving input instructions of an administrator; the brake pressure adjusting apparatus calls up, by the processor 1001, a brake pressure adjusting program stored in the memory 1005, and performs the following operations:
acquiring a current brake pressure value and an expected brake pressure value of an automobile brake unit;
comparing the current brake pressure value with the expected brake pressure value, and determining the working state of the automobile brake unit to be converted according to the comparison result;
generating a corresponding driving control signal according to the working state to be converted;
and adjusting the current brake pressure value according to the driving control signal.
Further, the processor 1001 may call the brake pressure adjustment program stored in the memory 1005, and also perform the following operations:
the current braking pressure value and the expected braking pressure value are subjected to difference so as to obtain an absolute difference value between the current braking pressure value and the expected braking pressure value;
judging whether the absolute difference value is larger than a preset threshold value or not;
if not, the working state to be converted of the automobile brake unit is judged to be the current brake pressure value.
Further, the processor 1001 may call the brake pressure adjustment program stored in the memory 1005, and also perform the following operations:
opening a pressure limiting valve, a pressure increasing valve and a pump motor of the automobile brake unit according to the driving control signal, and closing a suction valve and a pressure reducing valve;
and maintaining the current rotating speed of the pump motor according to the driving control signal so as to maintain the current braking pressure value.
Further, the processor 1001 may call the brake pressure adjustment program stored in the memory 1005, and also perform the following operations:
if so, judging whether the current brake pressure value is larger than the expected brake pressure value;
and if so, judging that the working state to be converted of the automobile brake unit is the reduction of the current brake pressure value.
Further, the processor 1001 may call the brake pressure adjustment program stored in the memory 1005, and also perform the following operations:
opening a suction valve, a pressure reducing valve, a pressure limiting valve and a pressure increasing valve of the automobile brake unit according to the driving control signal, and closing a pump motor;
and reducing the rotating speed of the pump motor according to the driving control signal so as to reduce the current braking pressure value.
Further, the processor 1001 may call the brake pressure adjustment program stored in the memory 1005, and also perform the following operations:
if not, the working state to be converted of the automobile brake unit is judged to be the current brake pressure value.
Further, the processor 1001 may call the brake pressure adjustment program stored in the memory 1005, and also perform the following operations:
opening a suction valve, a pressure limiting valve and a pump motor of the automobile brake unit according to the driving control signal, and closing a pressure reducing valve and a pressure increasing valve;
and increasing the rotating speed of the pump motor according to the driving control signal so as to increase the current braking pressure value.
In the embodiment, the current braking pressure value and the expected braking pressure value of the automobile braking unit are obtained; comparing the current brake pressure value with the expected brake pressure value, and determining the working state of the automobile brake unit to be converted according to the comparison result; generating a corresponding driving control signal according to the working state to be converted; and adjusting the current brake pressure value according to the driving control signal. The invention can enable the automobile brake unit to generate actual brake pressure following the expected brake pressure, ensures the stability of the output pressure of the brake system when the automobile brakes, and improves the safety of automatic emergency braking of the automobile.
Based on the hardware structure, the embodiment of the brake pressure adjusting method is provided.
Referring to fig. 2, fig. 2 is a schematic flow chart of a brake pressure adjusting method according to an embodiment of the present invention.
In this embodiment, the brake pressure adjusting method includes the steps of:
s100: and acquiring the current brake pressure value and the expected brake pressure value of the automobile brake unit.
In the present embodiment, the automotive brake unit is a vehicle electronic stability control system ESP (electronic stability program), which generates an oil pressure, i.e., an output brake pressure, at a brake disc or a caliper by a solenoid valve and a pump motor under driving of a drive plate. Hereinafter, the ESP will be described as an automobile brake sheet.
The current brake pressure value refers to a pressure value output by an automobile brake system in real time when an automobile brakes. In this embodiment, the wheel pressure may be detected in real time by the pressure sensor to obtain the current brake pressure value.
Specifically, pressure sensors may be provided on brake discs of a left front wheel, a left rear wheel, a right front wheel, and a right rear wheel of the automobile, respectively. The current braking pressure value of the automobile is obtained by detecting analog voltage signals output by the left front wheel pressure sensor, the left rear wheel pressure sensor, the right front wheel pressure sensor and the right rear wheel pressure sensor.
The expected brake pressure value is a value of the brake pressure required by the vehicle to avoid collision at a critical distance at which braking is required, which is calculated from the speed of the vehicle ahead, displacement information, position information of an obstacle, and the like, when the vehicle brakes. In this embodiment, after a scene is simulated and calculated by a vehicle-road simulation unit mounted on a vehicle, a desired brake pressure value is acquired.
S200: and comparing the current braking pressure value with the expected braking pressure value, and determining the working state to be converted of the automobile braking unit according to the comparison result.
It should be noted that the operation states to be converted include a pressure increase control state, a pressure reduction control state, and a pressure maintaining control state. The ESP adjusts the current brake pressure value by switching between the three states described above to achieve that the output pressure value follows the desired brake pressure value.
In this embodiment, to prevent the ESP from frequently switching the operating state, the determining, according to the comparison result, the operating state to be switched of the ESP specifically includes: the current braking pressure value and the expected braking pressure value are subjected to difference so as to obtain an absolute difference value between the current braking pressure value and the expected braking pressure value; judging whether the absolute difference value is larger than a preset threshold value or not; if not, the working state to be converted of the ESP is judged to be the current brake pressure value.
Specifically, the preset threshold B may be 0.2MPa, the current braking pressure value may be P1, and the expected braking pressure value may be P2. Judging whether | P1-P2| B is true; if the current braking pressure value is not within the preset threshold range, the difference value between the current braking pressure value and the expected braking pressure value is shown, and the working state to be converted is judged to be the current braking pressure value; if the difference value is within the preset threshold range, the current braking pressure value is adjusted.
In this embodiment, when the current braking pressure value is adjusted, it is determined whether the current braking pressure value is greater than the expected braking pressure value, that is, it is determined whether P1-P2>0 is true; if yes, judging that the working state to be converted of the ESP is the current braking pressure value is reduced; if the current brake pressure value is not increased, the to-be-converted working state of the ESP is judged to be the current brake pressure value.
S300: generating a corresponding driving control signal according to the working state to be converted;
s400: and adjusting the current brake pressure value according to the driving control signal.
It should be noted that the driving control signal includes a digital signal and a pulse frequency signal, wherein the digital signal is output to the enable terminals of the ESP solenoid valve and the pump motor to control the operating states of the solenoid valve and the pump motor; the pulse frequency signal is output to the driving end of the pump motor to control the rotating speed of the pump motor, so that the speed of oil pressure generated by the ESP is influenced.
In the embodiment, when the working state to be converted of the ESP is to maintain the current brake pressure value, the pressure limiting valve, the pressure increasing valve and the pump motor of the ESP are opened according to the driving control signal, and the suction valve and the pressure reducing valve are closed; and maintaining the rotating speed of the pump motor according to the driving control signal so as to maintain the current braking pressure value.
Specifically, the digital signals "0" and "1" are sent to the suction valve and the pressure limiting valve, the digital signals "1" and "0" are sent to the pressure increasing valve and the pressure reducing valve, and the digital signal "1" is sent to the port of the pump motor IN 1. Meanwhile, the duty ratio of the pulse frequency signal of the pump motor is kept unchanged.
In the embodiment, when the working state to be converted of the ESP is to reduce the current braking pressure value, the suction valve, the pressure reducing valve, the pressure limiting valve and the pressure increasing valve of the ESP are opened according to the driving control signal, and the pump motor is closed; and reducing the rotating speed of the pump motor according to the driving control signal so as to reduce the current braking pressure value.
Specifically, a digital signal '1' is sent to a suction valve and a pressure limiting valve, and a digital signal '1' is sent to a pressure increasing valve and a pressure reducing valve; a digital signal "0" is sent to the pump motor IN1 port. Meanwhile, the duty ratio of the pulse frequency signal of the pump motor is reduced.
In the embodiment, when the working state to be converted of the ESP is to increase the current brake pressure value, the suction valve, the pressure limiting valve and the pump motor of the ESP are opened according to the driving control signal, and the pressure reducing valve and the pressure increasing valve are closed; and increasing the rotating speed of the pump motor according to the driving control signal so as to increase the current braking pressure value.
Specifically, the digital signal "1" is sent to the suction valve and the pressure limiting valve, the digital signal "0" is sent to the pressure increasing valve and the pressure reducing valve, and the digital signal "1" is sent to the port of the pump motor IN 1. Meanwhile, the duty ratio of the pulse frequency signal of the pump motor is increased.
It should be noted that, in order to avoid too fast duty ratio change, the incremental control duty ratio change speed is set. Specifically, the Duty ratio before the change is set to be Duty, the Duty ratio after the change is set to be Duty', the increment is set, and the Duty ratio change during the process of increasing the current brake pressure value is represented as: duty', decreasing the current brake pressure value represents the Duty change as: and keeping the Duty ratio of the current brake pressure value process unchanged.
In addition, since there is dead zone control when adjusting the duty ratio, the maximum value and the minimum value of the duty ratio are set, and the dead zone is avoided. The dead zone in the PWM output refers to the situation where two rectifier circuits are simultaneously on due to the switching speed problem when the level is reversed.
In the embodiment, the current braking pressure value and the expected braking pressure value of the automobile braking unit are obtained; comparing the current brake pressure value with the expected brake pressure value, and determining the working state of the automobile brake unit to be converted according to the comparison result; generating a corresponding driving control signal according to the working state to be converted; and adjusting the current brake pressure value according to the driving control signal. The invention can enable the automobile brake unit to generate actual brake pressure following the expected brake pressure, ensures the stability of the output pressure of the brake system when the automobile brakes, and improves the safety of automatic emergency braking of the automobile.
Referring to fig. 3, fig. 3 is a schematic structural diagram of an embodiment of the brake pressure adjusting apparatus according to the present invention.
In this embodiment, the brake pressure regulating device includes a pressure sensor module 1101 and a tracking control decision module 1102; the pressure sensor module 1101 is connected with the tracking control decision module 1102:
the pressure sensor module 1101 is configured to obtain a current brake pressure value, and transmit the current brake pressure to the tracking control decision module.
In this embodiment, the pressure sensor module 1101 may include a sensor for detecting a pressure of a front left wheel, a pressure of a rear left wheel, a pressure of a front right wheel, and a pressure of a rear right wheel, which are disposed on a brake disc of a left wheel of an automobile.
The tracking control decision module 1102 is used for receiving a current braking pressure value of the automobile braking unit and acquiring an expected braking pressure value;
the tracking control decision module 1102 is further configured to compare the current braking pressure value with the expected braking pressure value, and determine a to-be-converted working state of the automobile braking unit 1103 according to a comparison result;
the tracking control decision module 1102 is further configured to generate a corresponding driving control signal according to the working state to be converted;
and the tracking control decision module 1102 is further configured to adjust the current braking pressure value according to the driving control signal.
In this embodiment, the brake pressure adjusting apparatus further includes a digital acquisition card 1104, and the digital acquisition card 1004 is disposed between the tracking control decision module 1102 and the pressure sensor module 1101, and between the tracking control decision module 1102 and the vehicle braking unit 1103.
The digital acquisition card 1104 can acquire an analog voltage signal output by the pressure sensor module 1101, and transmit the analog voltage signal to a digital-to-analog conversion unit in the tracking control decision module 1102, so that the tracking control decision module 1102 acquires the current brake pressure value.
It should be noted that the driving control signal includes a digital signal and a pulse frequency signal, wherein the digital signal is output to the enable terminals of the ESP solenoid valve and the pump motor to control the operating states of the solenoid valve and the pump motor; the pulse frequency signal is output to the driving end of the pump motor to control the rotating speed of the pump motor, so that the speed of oil pressure generated by the ESP is influenced.
Correspondingly, a Digital Output (DO) port and a pulse frequency output (CO) port are arranged on the digital acquisition card 1104, the digital output port is used for outputting digital signals to enable ends of the ESP solenoid valve and the pump motor, and the pulse frequency output port is used for outputting pulse frequency signals to a driving end of the pump motor.
In this embodiment, the brake pressure adjusting apparatus further includes a vehicle-road simulation unit 1105, where the vehicle-road simulation unit 1105 is configured to collect vehicle-road surrounding environment parameters, and when the vehicle brakes, calculate a required brake pressure of the vehicle when the vehicle is collided at a critical distance that needs braking according to a speed of the vehicle in front, displacement information, or position information of an obstacle, and send the calculated brake pressure value as an expected brake pressure value to the tracking control decision module 1102.
In the embodiment, the current braking pressure value and the expected braking pressure value of the automobile braking unit are obtained; comparing the current brake pressure value with the expected brake pressure value, and determining the working state of the automobile brake unit to be converted according to the comparison result; generating a corresponding driving control signal according to the working state to be converted; and adjusting the current brake pressure value according to the driving control signal. The invention can enable the automobile brake unit to generate actual brake pressure following the expected brake pressure, ensures the stability of the output pressure of the brake system when the automobile brakes, and improves the safety of automatic emergency braking of the automobile.
Further, to achieve the above object, the present invention also provides a computer-readable storage medium having stored thereon a brake pressure adjusting program which, when executed by a processor, implements the steps of the brake pressure adjusting method as described above.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third and the like do not denote any order, but rather the words first, second and the like may be interpreted as indicating any order.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be substantially implemented or a part contributing to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g., a Read Only Memory (ROM)/Random Access Memory (RAM), a magnetic disk, an optical disk), and includes several instructions for enabling a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A brake pressure adjusting method, characterized by comprising the steps of:
acquiring a current brake pressure value and an expected brake pressure value of an automobile brake unit;
comparing the current brake pressure value with the expected brake pressure value, and determining the working state of the automobile brake unit to be converted according to the comparison result;
generating a corresponding driving control signal according to the working state to be converted;
and adjusting the current brake pressure value according to the driving control signal.
2. The method for adjusting brake pressure according to claim 1, wherein the comparing the current brake pressure value with the expected brake pressure value and determining the working state of the automobile brake unit to be converted according to the comparison result specifically comprises:
subtracting the current braking pressure value and the expected braking pressure value to obtain an absolute difference value between the current braking pressure value and the expected braking pressure value;
judging whether the absolute difference value is larger than a preset threshold value or not;
if not, the working state to be converted of the automobile brake unit is judged to be the current brake pressure value.
3. The brake pressure adjusting method according to claim 2, wherein the adjusting the current brake pressure value according to the driving control signal specifically includes:
opening a pressure limiting valve, a pressure increasing valve and a pump motor of the automobile brake unit according to the driving control signal, and closing a suction valve and a pressure reducing valve;
and maintaining the current rotating speed of the pump motor according to the driving control signal so as to maintain the current braking pressure value.
4. A brake pressure adjusting method according to claim 2, wherein said determining whether the absolute difference value is larger than a preset threshold value further comprises:
if so, judging whether the current brake pressure value is larger than the expected brake pressure value;
and if so, judging that the working state to be converted of the automobile brake unit is the reduction of the current brake pressure value.
5. The brake pressure adjusting method according to claim 4, wherein the adjusting the current brake pressure value according to the driving control signal specifically includes:
opening a suction valve, a pressure reducing valve, a pressure limiting valve and a pressure increasing valve of the automobile brake unit according to the driving control signal, and closing a pump motor;
and reducing the rotating speed of the pump motor according to the driving control signal so as to reduce the current braking pressure value.
6. The method for adjusting brake pressure according to claim 4, wherein if yes, after determining whether the current brake pressure value is greater than the expected brake pressure value, the method further includes:
if not, the working state to be converted of the automobile brake unit is judged to be the current brake pressure value.
7. The brake pressure adjusting method according to claim 6, wherein the adjusting the current brake pressure value according to the driving control signal specifically includes:
opening a suction valve, a pressure limiting valve and a pump motor of the automobile brake unit according to the driving control signal, and closing a pressure reducing valve and a pressure increasing valve;
and increasing the rotating speed of the pump motor according to the driving control signal so as to increase the current braking pressure value.
8. A brake pressure regulating device, said device comprising a pressure sensor module and a tracking control decision module; the pressure sensor module is connected with the tracking control decision module:
the pressure sensor module is used for acquiring a current brake pressure value and transmitting the current brake pressure to the tracking control decision module;
the tracking control decision module is used for receiving the current braking pressure value of the automobile braking unit and acquiring an expected braking pressure value;
the tracking control decision module is also used for comparing the current braking pressure value with the expected braking pressure value and determining the working state to be converted of the automobile braking unit according to the comparison result;
the tracking control decision module is also used for generating a corresponding driving control signal according to the working state to be converted;
and the tracking control decision module is also used for adjusting the current braking pressure value according to the driving control signal.
9. A brake pressure regulating apparatus, characterized in that the apparatus comprises: a memory, a processor, and a brake pressure adjustment program stored on the memory and executable on the processor, the brake pressure adjustment program configured to implement the steps of brake pressure adjustment as claimed in any one of claims 1 to 7.
10. A computer-readable storage medium, having stored thereon a brake pressure adjustment program which, when executed by a processor, implements the steps of the brake pressure adjustment method according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010497742.5A CN111605526A (en) | 2020-06-03 | 2020-06-03 | Brake pressure adjusting method, device, equipment and readable storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010497742.5A CN111605526A (en) | 2020-06-03 | 2020-06-03 | Brake pressure adjusting method, device, equipment and readable storage medium |
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| CN111605526A true CN111605526A (en) | 2020-09-01 |
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| CN202010497742.5A Pending CN111605526A (en) | 2020-06-03 | 2020-06-03 | Brake pressure adjusting method, device, equipment and readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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