KR100482588B1 - Methold of controlling a shift at 4 - 3 kick down shift for an automatic transmission for vehicles - Google Patents
Methold of controlling a shift at 4 - 3 kick down shift for an automatic transmission for vehicles Download PDFInfo
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- KR100482588B1 KR100482588B1 KR10-2002-0078088A KR20020078088A KR100482588B1 KR 100482588 B1 KR100482588 B1 KR 100482588B1 KR 20020078088 A KR20020078088 A KR 20020078088A KR 100482588 B1 KR100482588 B1 KR 100482588B1
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 16
- 230000002159 abnormal effect Effects 0.000 claims abstract description 48
- 238000000034 method Methods 0.000 claims abstract description 20
- 230000008878 coupling Effects 0.000 claims 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed- or reversing-gearings for conveying rotary motion
- F16H59/14—Inputs being a function of torque or torque demand
- F16H59/18—Inputs being a function of torque or torque demand dependent on the position of the accelerator pedal
- F16H59/20—Kickdown
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed- or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/08—Range selector apparatus
- F16H2059/082—Range selector apparatus for different transmission modes
- F16H2059/086—Adaptive mode, e.g. learning from the driver
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H2061/0075—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by a particular control method
- F16H2061/0087—Adaptive control, e.g. the control parameters adapted by learning
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
킥 다운 4 → 3 변속시 변속말기에 발생되는 이상진동 발생을 최소화하여 변속성능을 향상시킴으로써, 승차감을 향상시킬 수 있는 자동 변속기의 킥 다운 4 → 3 변속시 변속 제어방법을 제공할 목적으로;To improve the shifting performance by minimizing the occurrence of abnormal vibration generated at the end of the shift during the kick-down 4 → 3 shift, to provide a shift control method for the kick-down 4 → 3 shift of the automatic transmission that can improve the ride comfort;
차량의 운행중 변속 제어 신호가 검출되어 4 → 3 변속 신호라고 판단되면, 학습 조건인가를 판단하는 제1 단계와; 상기 제1 단계의 조건을 만족하면, 이상 진동 발생 구간인가를 판단하는 제2 단계와; 상기 제2 단계의 조건을 만족하면, 이상 진동 신호를 검출하여 이상 진동을 판단하는 제3 단계와; 상기 제3 단계에서 이상 진동이 발생된다고 판단되면, 목표 변화율에 대한 보상제어를 실시하고, 리턴하는 제4 단계로 이루어지는 차량용 자동 변속기의 킥 다운 4 → 3 변속시 변속 제어방법을 제공한다.A first step of determining whether a learning condition is detected if a shift control signal is detected while the vehicle is running and is a 4- > A second step of determining whether an abnormal vibration generation section is satisfied if the condition of the first step is satisfied; A third step of detecting abnormal vibration by detecting an abnormal vibration signal when the condition of the second stage is satisfied; When it is determined that the abnormal vibration is generated in the third step, a compensation control method for a target change rate is provided, and a shift control method for kick down 4 to 3 shifting of the automatic transmission for a vehicle, the fourth step including returning is provided.
Description
본 발명은 차량용 자동 변속기의 킥 다운 4 → 3 변속시 변속 제어방법에 관한 것으로서, 보다 상세하게는 킥 다운 4 → 3 변속시 변속말기에 발생되는 이상진동(Judder; 차체 떨림)을 최소화할 수 있도록 하는 변속 제어방법에 관한 것이다.The present invention relates to a shift control method for shifting kick-down 4 → 3 of an automatic transmission for a vehicle, and more particularly, to minimize abnormal vibration (Judder; body vibration) generated at the end of the shift during kick-down 4 → 3 shift. It relates to a shift control method.
자동차에 적용되는 자동 변속기는 운전자가 셀렉트 레버를 원하는 변속 레인지로 변환하면, 이에 연동되는 매뉴얼 밸브의 포트 변환이 이루어지면서 오일펌프로부터 공급되는 유압을 솔레노이드 밸브의 듀티 제어에 따라 변속기어 메카니즘의 여러 작동요소를 선택적으로 작동시켜 변속이 이루어지도록 한다.When the driver changes the select lever to the desired shift range, the automatic transmission applied to the vehicle changes the hydraulic pressure supplied from the oil pump according to the duty control of the solenoid valve. Selectively actuate the elements to achieve shifting.
이와 같이 동작되는 자동변속기는, 각 해당 목표 변속단으로의 변속이 실행되는 경우 작동상태에서 작동 해제되는 마찰요소와, 작동 해제 상태에서 작동 상태로 변환되는 마찰요소를 보유하게 되는데, 이들 마찰요소의 작동 해제 및 작동 시작 타이밍에 따라 자동 변속기의 변속성능이 결정되는 바, 변속성능 향상을 위한 변속 제어방법의 연구가 계속되고 있다.The automatic transmission operated as described above has a friction element that is deactivated in the operating state when the shift to the corresponding target gear is performed, and a friction element that is converted from the deactivation state to the operating state. As the shift performance of the automatic transmission is determined according to the timing of deactivation and start of operation, research on the shift control method for improving shift performance continues.
그에 일환으로 본 발명은 킥 다운 4 → 3 변속시의 변속 제어방법에 관계하는데, 종래 킥 다운 4 → 3 변속시에는 학습 제어를 실시하지 않는다.As a part of the present invention, the present invention relates to a shift control method at the time of kickdown 4 → 3 shifting. However, the learning control is not performed at the conventional kickdown 4 → 3 shifting.
이에 따라 한번 결정된 목표는 변경될 수 없기 때문에 자동 변속기간의 편차에 의해 4 → 3 변속 말기에 이상 진동이 발생하더라도 이에 대응할 수 방법이 없는 바, 이상 진동 발생의 억제에 취약하다는 문제점을 내포하고 있다.Accordingly, since the target determined once cannot be changed, even if abnormal vibration occurs at the end of the 4 → 3 shift due to the deviation of the automatic shifting period, there is no way to cope with this, and thus it is vulnerable to suppression of abnormal vibration.
따라서 본 발명은 상기와 같은 문제점을 해결하기 위하여 발명된 것으로서, 본 발명의 목적은 킥 다운 4 → 3 변속시 변속말기에 발생되는 이상진동 발생을 최소화하여 변속성능을 향상시킴으로써, 승차감을 향상시킬 수 있는 자동 변속기의 킥 다운 4 → 3 변속시 변속 제어방법을 제공함에 있다.Therefore, the present invention has been invented to solve the above problems, the object of the present invention is to minimize the occurrence of abnormal vibration generated at the end of the shift during the shift down to kick-down 4 → 3 to improve the shifting performance, it is possible to improve the riding comfort It provides a control method for shifting the kick-down 4 → 3 shift of the automatic transmission.
이를 실현하기 위하여 본 발명은, 차량의 운행중 변속 제어 신호가 검출되어 4 → 3 변속 신호라고 판단되면, 학습 조건인가를 판단하는 제1 단계와;In order to realize this, the present invention includes a first step of determining whether a learning condition is detected when a shift control signal of a vehicle is detected and determined to be a 4 → 3 shift signal;
상기 제1 단계의 조건을 만족하면, 이상 진동 발생 구간인가를 판단하는 제2 단계와;A second step of determining whether an abnormal vibration generation section is satisfied if the condition of the first step is satisfied;
상기 제2 단계의 조건을 만족하면, 이상 진동 신호를 검출하여 이상 진동을 판단하는 제3 단계와;A third step of detecting abnormal vibration by detecting an abnormal vibration signal when the condition of the second stage is satisfied;
상기 제3 단계에서 이상 진동이 발생된다고 판단되면, 목표 변화율에 대한 보상제어를 실시하고, 리턴하는 제4 단계로 이루어지는 차량용 자동 변속기의 킥 다운 4 → 3 변속시 변속 제어방법을 제공한다. When it is determined that the abnormal vibration is generated in the third step, a compensation control method for a target change rate is provided, and a shift control method for kick down 4 to 3 shifting of the automatic transmission for a vehicle, the fourth step including returning is provided.
이하, 상기의 목적을 실현할 수 있는 본 발명의 바람직한 실시예를 첨부한 도면에 의거하여 상세히 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention that can realize the above object will be described in detail.
도 1은 본 발명의 제어방법을 운용할 수 있는 시스템의 블록도로서, 엔진(2)으로부터 회전동력이 토크 컨버터(4)를 통해 토오크 변환되어 출력될 때 출력측인 터어빈의 회전속도가 검출되어 변속 제어부(6)로 입력되고, 주행상태 감지부(8)로부터 차속, 스로틀 개도율, 트랜스밋션의 온도등 전반적인 상태를 검출하여 그에 해당하는 전기적인 신호가 변속 제어부(6)로 입력된다. 1 is a block diagram of a system capable of operating the control method of the present invention, in which the rotation speed of the turbine on the output side is detected and shifted when the rotational power is output by torque conversion from the engine 2 through the torque converter 4. The controller 6 detects an overall state of the vehicle speed, the throttle opening degree, the temperature of the transmission, and the like, and inputs an electric signal to the shift controller 6 from the driving state detector 8.
그러면, 변속 제어부(6)에서는 주행 상태 감지부(8)로부터 인가되는 신호에 의해 차량의 전반적인 운행상태를 판단하여, 설정된 맵 테이블의 데이터에 의해 유압 제어를 위한 듀티 패턴의 신호를 출력하여 유압 시스템(10)을 구동하게 된다.Then, the transmission control unit 6 determines the overall driving state of the vehicle by the signal applied from the driving state detecting unit 8, and outputs a signal of the duty pattern for the hydraulic control based on the data of the set map table, the hydraulic system 10 will be driven.
상기 유압시스템(10)은 상기 변속 제어부(6)에서 인가되는 제어신호에 따라 변속단 동기를 위한 각각의 솔레노이드 밸브를 구동시켜 임의의 마찰요소를 제어함으로써, 스로틀 밸브의 개도율과 차속 및 토오크 컨버터내의 터어빈 회전속도에 따라 목표 변속단을 업 시프트 또는 다운 시프트를 실행시키게 되는 것이다.The hydraulic system 10 controls each frictional element by driving each solenoid valve for shift stage synchronization according to a control signal applied from the shift control unit 6, thereby controlling the opening ratio and vehicle speed and torque converter of the throttle valve. According to the turbine rotational speed in the target shift stage is to perform the up shift or down shift.
상기와 같은 제어 시스템을 이용하는 본 발명의 변속 제어는 도 2와 같은 작동의 흐름으로 이루어지게 된다.Shift control of the present invention using the control system as described above is made of the flow of the operation as shown in FIG.
즉, 차량의 운행중 변속 제어 신호가 검출되면, 먼저 4 → 3 변속 신호인가를 판단하여(S100), 4 → 3 변속 신호라고 판단되면, 학습 조건인가를 판단한다(S110).That is, when the shift control signal is detected while the vehicle is running, first, it is determined whether the shift is a 4 → 3 shift signal (S100).
상기 S110 단계에서 학습조건이라고 판단되면, 이상 진동 발생 구간인가를 판단하여(S120), 이상 진동 발생구간이라고 판단되면, 설정된 시간당 변화율(dNo/dt)의 최소, 최대치를 포함하여 검출한다(S130).If it is determined that the learning condition in step S110, it is determined whether or not the abnormal vibration generation period (S120), if it is determined that the abnormal vibration generation period, it is detected by including the minimum, the maximum value of the change rate (dNo / dt) per hour (S130) .
상기 S110 단계에서의 학습조건은 "파워 온 상태일 것", "매뉴얼 변속이 아닐 것", "이전 변속이 종료된 후 2초 이상 경과되어 있을 것", "기계적인 변속이 행해지는 시점부터 변속이 완료되는 시점까지의 스로틀 변화량이 일정값 이내일 것", "킥 다운 4 → 3 저속 제어 패턴일 것" 이라는 조건을 모두 만족해야 한다.The learning condition in the step S110 is "power on", "not manual shift", "more than 2 seconds have elapsed since the previous shift", "shift from the time when mechanical shift is performed The throttle change until the completion of this time is within a certain value "," kickdown 4 → 3 low speed control pattern "must be satisfied.
그리고 상기 S120 단계에서의 이상 진동 발생구간이라고 함은 4 → 3 제어시 해방측 마찰요소의 해제 작동구간을 의미한다.In addition, the abnormal vibration generation section in the step S120 refers to the release operation period of the release side friction element during 4 → 3 control.
상기 S130 단계에서 설정된 시간당 변화율(dNo/dt)의 최소, 최대치를 포함하여 검출되면, 이들의 평균값{+(dNo/dt)av와 -(dNo/dt)av}을 램에 저장하고(S140), 상기 설정된 시간당의 변화율의 평균값 ±(dNo/dt)av를 근거로 하여 이상 진동을 판정하게 된다(S150). If the minimum and maximum values of the rate of change (dNo / dt) set in step S130 are detected, the average values {+ (dNo / dt) av and-(dNo / dt) av} are stored in the RAM (S140). The abnormal vibration is determined on the basis of the average value ± (dNo / dt) av of the set rate of change per hour (S150).
상기에서 S150 단계에서의 이상진동 판단은 최대측 이상진동 기준치(XDNOJD43_2B) 보다 +(dNo/dt)av 값이 크거나 같은 경우와, 최소측 이상진동 기준치(-XDNOJD43_2B) 보다 -(dNo/dt)av 값이 작거나 같은 경우이면, 일단 이상 진동이 발생한 것으로 판단하며, 이의 이상 진동 기준치(XDNOJD43_2B)는 대략 7rev/s2 정도이다.The abnormal vibration determination in the step S150 is when the + (dNo / dt) av value is greater than or equal to the maximum abnormal vibration reference value (XDNOJD43_2B), and-(dNo / dt) than the minimum abnormal vibration reference value (-XDNOJD43_2B). When the av value is small or the same, it is determined that abnormal vibration has occurred once, and its abnormal vibration reference value XDNOJD43_2B is about 7 rev / s2.
그리고 상기 S150 단계에서 이상 진동으로 판단되면, 상기 S140 단계에서 램에 저장한 +(dNo/dt)av와 -(dNo/dt)av를 이용하여 목표 변화율 학습(보상) 제어를 수행하며(S160), 설정된 시간당 변화율(dNo/dt)av를 이용하여 도 3에서와 같이 목표 변화율(dNo/dt)의 이상 진동 보정계수(CL)을 학습한다(S180).If it is determined that the abnormal vibration in step S150, the target change rate learning (compensation) control is performed using + (dNo / dt) av and-(dNo / dt) av stored in the RAM in step S140 (S160). The abnormal vibration correction coefficient C L of the target change rate dNo / dt is learned as shown in FIG. 3 using the set change rate per time dNo / dt av (S180).
상기 S160 단계에서의 엔진 출력 회전수 변화량 Δ(dNo)는 "│(dNo/dt)av│ - 이상 진동 기준치(XDNOJD43_2B)" 값으로 이루어지며, 상기 S180 단계에서의 이상 진동 보정계수(CL)new는 "이전 이상 진동 보정계수(CL)old + 이상 진동 보정계수 1회 학습량(ΔCL)" 값으로 학습된다.The engine output rotational speed change Δ (dNo) at step S160 is made of a value of “│ (dNo / dt) av│-abnormal vibration reference value (XDNOJD43_2B)”, and the abnormal vibration correction coefficient C L at step S180. new is learned with a value of "the previous abnormal vibration correction coefficient (C L ) old + one abnormal vibration correction coefficient (1) learning amount (ΔC L )".
그리고 상기 S180 단계를 완료한 후에는 피드백 제어용 해방측 목표 변화율(dNFR)을 구하여 다음회의 킥 다운 4 → 3변속시 적용하게 된다.After the step S180 is completed, the release target target rate of change (dN FR ) for feedback control is obtained and applied at the next kick-down 4 → 3 shift.
상기 S190 단계에서의 해방측 목표 변화율(dNFR)은 "(αR × dNFA × β) × CL " 로 구해지며, 상기에서 αR는 계수, dNFA는 결합측 목표 변화율, β는 이상진동 구간에서의 해방측 변화율 연산계수, CL는 해방측 목표 변화율의 이상 진동 보정계수이다.The release target change rate dN FR at step S190 is calculated as "(α R x dN FA × β) × C L ", wherein α R is a coefficient, dN FA is a binding side target change rate, and β is abnormal. The release side change rate calculation coefficient, C L , in the vibration section is the abnormal vibration correction coefficient of the release rate target change rate.
이상에서와 같이 본 발명에 의하면, 킥 다운 4 → 3 변속시 이상 진동 구간의 설정 시간당 변화율을 이용하여 이상 진동 크기를 학습하고, 이의 학습치를 다음회 킥 다운 4 → 3 변속시의 목표 변화율에 적용하여 해방측 유압(피드백 제어 이용)이 신속하게 해제되도록 함으로써, 이상 진동을 최소화하여 승차감을 향상시킬 수 있는 발명인 것이다.As described above, according to the present invention, the magnitude of the abnormal vibration is learned using the set time-percent change rate of the abnormal vibration section at the time of the kick-down 4 → 3 shift, and its learning value is applied to the target rate of change at the next kick-down 4 → 3 shift. By releasing the release side hydraulic pressure (using feedback control) quickly, it is an invention that can improve the ride comfort by minimizing abnormal vibration.
도 1은 본 발명을 운용하기 위한 시스템의 블록도.1 is a block diagram of a system for operating the present invention.
도 2는 본 발명의 제어방법에 대한 작동 흐름도.2 is an operation flowchart for the control method of the present invention.
도 3은 본 발명에 적용되는 이상 진동 보정계수 학습방법의 일예를 보인 도면이다.3 is a view showing an example of an abnormal vibration correction coefficient learning method applied to the present invention.
Claims (8)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2002-0078088A KR100482588B1 (en) | 2002-12-10 | 2002-12-10 | Methold of controlling a shift at 4 - 3 kick down shift for an automatic transmission for vehicles |
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| KR10-2002-0078088A KR100482588B1 (en) | 2002-12-10 | 2002-12-10 | Methold of controlling a shift at 4 - 3 kick down shift for an automatic transmission for vehicles |
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| KR100482588B1 true KR100482588B1 (en) | 2005-04-14 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980030065A (en) * | 1996-10-29 | 1998-07-25 | 박병재 | Hydraulic control system of automatic transmission for vehicles |
| JPH10238619A (en) * | 1997-02-26 | 1998-09-08 | Nissan Motor Co Ltd | Gear shift control device for automatic transmission |
| KR19990050712A (en) * | 1997-12-17 | 1999-07-05 | 정몽규 | Kickdown 4 → 3 Downshift Shift Control |
| KR19990050704A (en) * | 1997-12-17 | 1999-07-05 | 정몽규 | Transmission control device and method of automatic transmission |
-
2002
- 2002-12-10 KR KR10-2002-0078088A patent/KR100482588B1/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980030065A (en) * | 1996-10-29 | 1998-07-25 | 박병재 | Hydraulic control system of automatic transmission for vehicles |
| JPH10238619A (en) * | 1997-02-26 | 1998-09-08 | Nissan Motor Co Ltd | Gear shift control device for automatic transmission |
| KR19990050712A (en) * | 1997-12-17 | 1999-07-05 | 정몽규 | Kickdown 4 → 3 Downshift Shift Control |
| KR19990050704A (en) * | 1997-12-17 | 1999-07-05 | 정몽규 | Transmission control device and method of automatic transmission |
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| KR20040050296A (en) | 2004-06-16 |
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