KR100391472B1 - Method of controlling an initial duty learning of the release part at the kick down shift for vehicles having an automatic transmission - Google Patents

Method of controlling an initial duty learning of the release part at the kick down shift for vehicles having an automatic transmission Download PDF

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KR100391472B1
KR100391472B1 KR10-2001-0055893A KR20010055893A KR100391472B1 KR 100391472 B1 KR100391472 B1 KR 100391472B1 KR 20010055893 A KR20010055893 A KR 20010055893A KR 100391472 B1 KR100391472 B1 KR 100391472B1
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South Korea
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learning
shift
condition
change
satisfied
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KR10-2001-0055893A
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Korean (ko)
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KR20030023023A (en
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여창기
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현대자동차주식회사
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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
    • 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
    • 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
    • F16H59/36—Inputs being a function of speed
    • F16H59/38—Inputs being a function of speed of gearing elements
    • F16H59/40—Output shaft speed
    • 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
    • F16H2059/183—Rate of change of accelerator position, i.e. pedal or throttle change gradient
    • 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
    • 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
    • F16H61/04—Smoothing ratio shift
    • F16H2061/0459—Smoothing ratio shift using map for shift parameters, e.g. shift time, slip or pressure gradient, for performing controlled shift transition and adapting shift parameters by learning

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)

Abstract

런업과 타이업 판정에 의한 학습 제어가 이루어지고, 학습 조건에 구배와 고지등의 판정을 통한 오학습을 방지하여 저속 킥다운 변속 품질을 향상시킬 목적으로;Learning control by run-up and tie-up determination is made, and the purpose is to improve the low-speed kickdown shift quality by preventing mis-learning through determination of grade and notice in the learning condition;

다운 시프트의 변속지령 학습 실시 조건인가를 판단하고 변속 초기 구간에서의 목표 변화율 dNic의 출력시간 동안 실 터빈 회전수의 변화율 dNt의 평균치가 기준치 이상인가를 판단하여 이상이면, 런 업으로 판단하여 런 업량에 따른 학습량을 구하여 제어하고, 이하이면, 타이업으로 판단하여 학습 변화량을 타이업시 1회의 학습 기준값으로 학습량을 구하여 학습 제어가 이루어지도록 한 차량용 자동 변속기의 킥다운 변속시 해방측 초기듀티 학습 제어방법을 제공한다.If it is abnormal to judge whether the downshift shift instruction learning execution condition is true and the average value of the change rate dNt of the actual turbine speed during the output time of the target change rate dNic in the initial shift period is higher than or equal to the reference value, it is judged as a run-up. According to the method of the present invention, if the learning amount according to the following method is determined, it is determined that the tie-up determines the learning amount by one learning reference value at the time of tie-up. To provide.

Description

차량용 자동 변속기의 킥다운 변속시 해방측 초기듀티 학습방법{METHOD OF CONTROLLING AN INITIAL DUTY LEARNING OF THE RELEASE PART AT THE KICK DOWN SHIFT FOR VEHICLES HAVING AN AUTOMATIC TRANSMISSION}TECHNICAL OF CONTROLLING AN INITIAL DUTY LEARNING OF THE RELEASE PART AT THE KICK DOWN SHIFT FOR VEHICLES HAVING AN AUTOMATIC TRANSMISSION}

본 발명은 차량용 자동 변속기의 킥다운 변속시 해방측 초기듀티 학습방법에 관한 것으로서, 보다 상세하게는 런업과 타이업 판정에 의한 학습 제어가 이루어지고, 학습 조건에 구배와 고지등의 판정을 통한 오학습을 방지하여 저속 킥다운 변속 품질을 향상시킬 수 있도록 한 차량용 자동 변속기의 킥다운 변속시 해방측 초기듀티 학습방법에 관한 것이다.The present invention relates to an initial duty learning method of the release side during a kick-down shift of an automatic transmission for a vehicle. More specifically, the learning control is performed by a run-up and a tie-up determination. The present invention relates to an initial duty learning method of the release side during the kickdown shift of an automatic transmission for a vehicle to prevent the learning to improve the low speed kickdown shift quality.

예컨대, 자동차에 적용되는 자동 변속기는 자동차의 주행속도와 스로틀 밸브의 개도율 및 제반 검출조건에 따라 변속제어장치가 다수의 솔레노이드 밸브를제어하여 유압을 제어함으로써, 목표 변속단의 변속기어가 동작되어 자동으로 변속이 이루어지게 하는 것이다.For example, an automatic transmission applied to a vehicle is controlled by a shift control device controlling a plurality of solenoid valves to control hydraulic pressure according to a driving speed of a vehicle, an opening ratio of a throttle valve, and various detection conditions, thereby operating a gear shift of a target shift stage. To make the shift.

즉, 운전자가 셀렉트 레버를 원하는 변속단으로 레인지 변환하면, 매뉴얼 밸브의 포트 변환이 이루어지면서 오일펌프로부터 공급되는 유압을 솔레노이드 밸브의 듀티 제어에 따라 변속기어 메카니즘의 여러 작동요소를 선택적으로 작동시켜 변속이 이루어지도록 한다.In other words, when the driver changes the select lever to the desired gear range, the manual valve port is changed and the hydraulic pressure supplied from the oil pump is selectively operated according to the duty control of the solenoid valve. Let this be done.

이와같은 작동원리에 따라 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 자동변속기의 변속성능이 결정되므로 최근에는 보다 나은 변속성능 향상을 위한 변속 제어방법의 연구가 활발하게 진행되고 있다.The automatic transmission operated according to this operation principle has a friction element that is deactivated in the operating state when the shift to the corresponding target gear stage is performed, and a friction element that is converted from the deactivated state to the operating state. Since the shift performance of the automatic transmission is determined according to the timing of deactivation and start of operation of these friction elements, recent studies on shift control methods for better shift performance have been actively conducted.

이러한 점을 감안하여 본 발명의 기술적 배경을 살펴보면, 자동변속기의 변속제어는 차량의 주행 상태에 따라 전진 1속으로부터 순차적으로 4속 또는 5속까지 변속이 이루어지는 업 시프트 변속제어와, 전진 4속 또는 5속으로부터 1속까지 순차적으로 변속이 이루어지는 다운 시프트 변속제어와, 4속에서 2속, 3속에서 1속으로 다운 시프트가 이루어지는 다운 스킵 변속제어가 이루어지게 된다.In view of the above, in the technical background of the present invention, the shift control of the automatic transmission includes upshift shift control in which shifting is sequentially performed from 1 forward speed to 4 speed or 5 speed according to the driving state of the vehicle, and 4 forward speed or Downshift shift control in which shifting is sequentially performed from 5 speed to 1 speed is performed, and down skip shift control in which downshift is performed from 4 speed to 2 speed and 3 speed to 1 speed is performed.

상기와 같은 변속제어 과정에서는 변속감 향상을 위하여 학습제어를 통한 초기 제어 듀티를 증감시키고 있으나, 종래에는 저속 킥 다운의 경우 학습 제어를 실시하지 않고 있다.In the shift control process as described above, the initial control duty through the learning control is increased or decreased to improve the shifting feeling. However, in the case of the low speed kick down, the learning control is not performed.

이에따라 주행거리의 증가에 의한 클러치 간극 증대, 유압 저하, 편차 대응이 어려워 변속 충격이 발생될 가능성이 상존하고 있다는 문제점을 내포하고 있다.Accordingly, it is difficult to cope with the increase in the clutch clearance, the hydraulic pressure drop, and the deviation due to the increase in the mileage.

따라서 본 발명은 상기와 같은 문제점을 해결하기 위하여 발명된것으로서, 본 발명의 목적은, 런업과 타이업 판정에 의한 학습 제어가 이루어지고, 학습 조건에 구배와 고지등의 판정을 통한 오학습을 방지하여 저속 킥다운 변속 품질을 향상시킬 수 있도록 한 차량용 자동 변속기의 킥다운 변속시 해방측 초기듀티 학습 제어방법을 제공함에 있다.Therefore, the present invention has been invented to solve the above problems, the object of the present invention, the learning control by the run-up and tie-up determination is made, to prevent mis-learning through the determination of the gradient and notice in the learning conditions The present invention provides an initial duty learning control method of the release side during a kickdown shift of an automatic transmission for a vehicle to improve the low speed kickdown shift quality.

도 1은 본 발명을 운용하기 위한 시스템의 일반적인 블록도.1 is a general block diagram of a system for operating the present invention.

도 2는 본 발명의 설명을 위한 변속 패턴도.2 is a shift pattern diagram for explaining the present invention.

도 3은 본 발명에 의한 작동 흐름도.3 is an operational flowchart according to the present invention.

도 4는 학습량을 구하는 방법을 나타내는 그래프 선도이다.4 is a graph showing a method of obtaining a learning amount.

이를 실현하기 위하여 본 발명은, 다운 시프트의 변속지령 학습 실시 조건인가를 판단하고 변속 초기 구간에서의 목표 변화율 dNic의 출력시간 동안 실 터빈 회전수의 변화율 dNt의 평균치가 기준치 이상인가를 판단하는 제1 단계와;In order to realize this, the present invention is the first to determine whether the shift command learning implementation conditions of the downshift, and whether the average value of the rate of change dNt of the actual turbine speed during the output time of the target rate of change dNic in the initial period of the shift is greater than the reference value Steps;

상기 제1 단계의 조건을 만족하면, 변속 중기 구간에서 실 터빈 회전 변화율 dNt의 최소치가 0 이상인가와, 변속 말기 구간에서 터빈 회전수 Nt가 변표 변속단의 회전수 (Nt)j 이상인가를 판단하는 제2 단계와;If the condition of the first step is satisfied, it is determined whether the minimum value of the actual turbine rotation rate of change dNt is equal to or greater than zero in the shift medium period section and whether the turbine rotational speed Nt is equal to or greater than the rotational speed Ntj of the variable speed shift stage in the late transmission period. Performing a second step;

상기 2단계의 조건을 만족하면, 변속 말기 구간에서의 터빈 회전수의 최대치(Nt)max와 런 업량(△Nt), 그리고 상기 런 업량에 따른 학습 변화량 △DRL을 계산하는 제3 단계와;A third step of calculating the maximum value of the turbine speed (Nt) max and the run up amount (ΔNt) and the learning change amount ΔD RL according to the run up amount when the condition of the second step is satisfied;

상기 제3 단계의 완료후 변속초기 구간 이후의 VTH 가 2.5 V 보다 크면, 새로운 학습 변화량(DRL)NEW을 구하고, 작으면 학습 변화량 △DRL를 0%로 한 후 종료하는 제4 단계와;A fourth step of obtaining a new learning change amount (D RL ) NEW if the VTH after the initial shift period after completion of the third step is greater than 2.5 V, and ending after setting the learning change amount ΔD RL to 0% if small;

상기 제 1단계에서 조건을 만족하지 못하면, 변속 중기 구간에서 실 터빈 회전 변화율 dNt의 최소치가 0 이하인가를 판단하여 조건에 만족하면 학습 변화량 △DRL를 타이업시 1회의 학습량으로 설정한 후 상기 제4단계로 진입하는 제5단계로 이루어짐을 특징으로 하는 차량용 자동 변속기의 킥다운 변속시 해방측 초기듀티 학습 제어방법을 제공한다.If the condition is not satisfied in the first step, it is determined whether the minimum value of the actual turbine rotational change rate dNt is equal to or less than zero in the medium shift section, and if the condition is satisfied, the learning change amount ΔD RL is set to one learning amount during tie-up. In the kick-down shift of the automatic transmission for a vehicle, characterized in that the fifth step to enter the fourth step provides a release side initial duty learning control method.

이하, 상기의 목적을 구체적으로 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 specifically realize the above object will be described in detail.

도 1은 본 발명을 운용하기 위한 블록도로서, 차량 상태 검출수단(2)을 형성하는 스로틀 포지션 센서(4), 차속센서(6), 인히비터 스위치(8), 유온센서(10), 엔진 RPM센서(12), 펄스 제네레이터 A, B(14)(16), 대기압 센서(18), 구배센서(20)등으로부터 변속에 필요한 각각의 정보가 트랜스밋션 제어유닛(이하, TCU라고 약칭함)에 입력되면, 이의 TCU에서는 이를 이미 입력되어진 데이터와 비교 분석하여 자동 변속기내의 각종 변속 관련 솔레노이드 밸브로 이루어지는 유압제어 구동수단(22)을 제어하여 변속을 행하게 되는 것이다.1 is a block diagram for operating the present invention, a throttle position sensor 4, a vehicle speed sensor 6, an inhibitor switch 8, an oil temperature sensor 10, an engine forming a vehicle state detection means 2; Each piece of information necessary for shifting from the RPM sensor 12, the pulse generators A, B (14) 16, the atmospheric pressure sensor 18, the gradient sensor 20, etc. is referred to as a transmission control unit (hereinafter abbreviated as TCU). When inputted to the TCU, the TCU is controlled by comparing the data with the data already inputted to control hydraulic control drive means 22 including various transmission related solenoid valves in the automatic transmission.

상기에서 차량 상태 검출수단(2)을 형성하는 각각의 센서(4 ~ 20)들의 기능은 이미 공지된 기술인 바, 상세한 설명은 생략하며, 상기의 검출수단(2)은 상기의 센서(4 ∼ 20)들로만 한정되는 것은 아니다.Since the functions of the respective sensors 4 to 20 forming the vehicle state detecting means 2 are well known in the art, a detailed description thereof will be omitted, and the detecting means 2 will be described above. It is not limited only to).

그리고 상기 유압제어 구동수단(22)은 변속기 내부에 배치되어 있는 다수의솔레노이드 밸브를 지칭하는데, 본 발명에서는 해방측에 관계하는 솔레노이드 밸브를 지칭한다.And the hydraulic control drive means 22 refers to a plurality of solenoid valves disposed in the transmission, in the present invention refers to a solenoid valve related to the release side.

이와같이 차량 상태 검출 수단(2)으로부터 입력되는 신호를 근거로 유압 제어구동수단(22)를 제어하여 변속이 이루어지는 과정에서 본 발명에 의한 변속제어는 도2 및 도 3과 같은 상태로 이루어지게 되는 것이다.As described above, the shift control according to the present invention is performed as shown in FIGS. 2 and 3 in the process of shifting by controlling the hydraulic control driving means 22 based on the signal input from the vehicle state detecting means 2. .

도 2 및 도 3은 본 발명에 의한 변속시의 패턴과 그 작동 흐름도로서, 먼저 다운 시프트의 변속지령(SS)이 내려지면, 해방측 듀티제어가 이루어지게 되는데, 이러한 과정에서 트랜스밋션제어유닛(TCU)에서는 학습 실시 조건인가를 판단하게 된다(S100).2 and 3 are a flow pattern and an operation flowchart thereof according to the present invention. First, when the shift command SS of the down shift is issued, the release side duty control is performed. In this process, the transmission control unit ( In the TCU, it is determined whether the learning condition is performed (S100).

상기 학습 실시 조건의 요소는 기구적으로 변속이 시작되는 SB 점에서 파워 온 상태이고, 전회의 변속이 업 시프트인 경우에 전회 변속 완료시점(SF)으로부터 현재의 변속 시작시점(SS)까지의 경과시간이 기준시간 이상 경과하였는가, 유온이 일정범위 이내인가, 고도조건이 기준값 이내인가, 구배가 기준값 이내인가로 판단하게 된다.The element of the learning execution condition is a power-on state at the SB point in which the shift is mechanically started, and when the previous shift is an up shift, the passage from the previous shift completion point SF to the current shift start point SS is performed. It is determined whether the time has elapsed over the reference time, whether the oil temperature is within a certain range, whether the altitude condition is within the reference value, or whether the gradient is within the reference value.

상기에서 경과시간은 대략 2s, 유온은 50℃와 110℃ 사이, 대기압은 642.41mmHg 보다 크고, 구배는 5% 이내인가를 기준값으로 하고 있다.It is assumed that the elapsed time is approximately 2 s, the oil temperature is between 50 ° C and 110 ° C, the atmospheric pressure is greater than 642.41 mmHg, and the gradient is within 5%.

상기 S100 조건을 만족하면, 변속 초기 구간인 C 구간에서의 목표 변화율 dNic의 출력시간 동안 실 터빈 회전수의 변화율 dNt의 평균치가 dNid * Ckd(오프 다운 타이-업 판정용 계수) 이상인가를 판단하게 된다(S110).When the condition S100 is satisfied, it is determined whether the average value of the rate of change dNt of the actual turbine speed during the output time of the target rate of change dNic in the section C, which is the initial speed shift, is greater than or equal to dNid * Ckd (off-down tie-up determination coefficient). It becomes (S110).

상기 S110 단계에서, 조건을 만족하면, 변속 중기인 D 구간에서 실 터빈 회전 변화율 dNt의 최소치가 0 이상인가를 판단하여(S120), 그 조건을 만족하면, 변속 말기 구간인 E 구간에서 터빈 회전수 Nt가 변표 변속단의 회전수 (Nt)j 이상인가를 판단하게 된다(S130).In the step S110, if the condition is satisfied, it is determined whether the minimum value of the actual turbine rotational change rate dNt is greater than or equal to 0 in the section D of the shift medium period (S120). It is determined whether Nt is equal to or more than the rotation speed Nt j of the variable speed shift stage (S130).

상기 S130 단계에서의 조건을 만족하면, 변속 말기인 E 구간에서의 터빈 회전수의 최대치(Nt)max를 계산하게 되는데(S140), 이의 (Nt)max는 E 구간에서 dNt 〉0에서 dNt ≤ 0 으로 변경되었을 때의 터빈 회전수를 (Nt)max로 한다.If the condition in step S130 is satisfied, the maximum value of the turbine speed (Nt) max in the E section, which is the end of the shift, is calculated (S140), where (Nt) max is dNt > The turbine rotation speed when changed to is set to (Nt) max.

그리고 런 업량(△Nt)을 계산하게 되는데(S150), 이의 런 업량 △Nt = (Nt)max - (Nt)j로 계산하고, 이의 런 업량에 따른 학습 변화량 △DRL을 계산하는데(S160), 상기 △DRL은 도 4의 그래프와 같은 맵에 의하여 계산이 이루어진다.The run-up amount ΔNt is calculated (S150), and the run-up amount ΔNt = (Nt) max-(Nt) j is calculated, and the learning change amount ΔD RL is calculated according to the run-up amount (S160). , ΔD RL is calculated by the map as shown in the graph of FIG.

도 4에서 △Nt1, 2, 3은 저속 킥다운 학습용 런 업량을 나타내며, Dr1, 2, 3은 저속 킥다운 학습치를 나타낸다.In FIG. 4, ΔNt1, 2, and 3 represent run-up amounts for slow kickdown learning, and Dr1, 2, and 3 represent low-speed kickdown learning values.

상기 S160 단계에서 △DRL를 구한 후에는 B 구간 이후의 VTH 가 2.5 V 보다 큰가를 판단하여(S170), 크다고 판단되면, 새로운 학습 변화량(DRL)NEW을 구한 뒤(S180) 종료되며, 상기 (DRL)NEW는 (DRL)OLD+ △DRL로 계산된다.After obtaining ΔD RL in step S160, it is determined whether the VTH after the interval B is greater than 2.5 V (S170). If it is determined that large, a new learning change amount (D RL ) NEW is obtained (S180). (D RL ) NEW is calculated as (D RL ) OLD + ΔD RL .

그리고 상기 S110 단계에서 조건을 만족하지 못하면, 변속 중기 구간인 D 구간에서 실 터빈 회전 변화율 dNt의 최소치가 0 이하인가를 판단하여(S190) 조건에 만족하면 학습 변화량 △DRL를 타이업시 1회의 학습량인 - 0.78%로 하고(S200), S170 단계로 진입한다.If the condition is not satisfied in step S110, it is determined whether the minimum value of the actual turbine rotation rate of change dNt is equal to or less than 0 in the section D, which is the medium speed section of the transmission, and if the condition is satisfied, the learning amount ΔD RL is once learned. Phosphorus-0.78% (S200), and enters the step S170.

또한, 상기 S170 단계에서 조건을 만족하지 못하면 학습 변화량 △DRL를 0%로 한 후(S210) 종료한다.In addition, if the condition is not satisfied in step S170, the learning change amount DELTA D RL is 0% (S210).

이상에서와 같이 본 발명에 의하면, 런-업과 타이-업 판정에 의한 학습 제어가 이루어지고, 학습 조건에 구배와 고지등의 판정을 통한 오학습을 방지하여 저속 킥다운 변속 품질을 향상시킬 수 있게 되는 것이다.As described above, according to the present invention, the learning control by the run-up and tie-up determination is made, and it is possible to improve the low-speed kickdown shift quality by preventing mis-learning through the determination of the gradient and the notice in the learning condition. Will be.

Claims (6)

다운 시프트의 변속지령 학습 실시 조건인가를 판단하여 조건을 만족하면, 변속 초기 구간에서의 목표 변화율 dNic의 출력시간 동안 실 터빈 회전수의 변화율 dNt의 평균치가 기준치 이상인가를 판단하는 제1 단계와;A first step of determining whether or not the downshift shift learning learning condition is satisfied and if the condition is satisfied, the average value of the rate of change dNt of the actual turbine speed during the output time of the target rate of change dNic in the initial shift period is greater than or equal to the reference value; 상기 제1 단계의 조건을 만족하면, 변속 중기 구간에서 실 터빈 회전 변화율 dNt의 최소치가 0 이상인가를 판단하여, 그 조건을 만족하면, 변속 말기 구간에서 터빈 회전수 Nt가 변표 변속단의 회전수 (Nt)j 이상인가를 판단하는 제2 단계와;If the condition of the first step is satisfied, it is determined whether the minimum value of the actual turbine rotational change rate dNt is equal to or greater than zero in the shift medium period, and if the condition is satisfied, the turbine revolution speed Nt is the rotation speed of the variable speed shift stage. A second step of determining whether or not (Nt) j or more; 상기 2단계의 조건을 만족하면, 변속 말기 구간에서의 터빈 회전수의 최대치(Nt)max와 런 업량(△Nt), 그리고 상기 런 업량에 따른 학습 변화량 △DRL을 계산하는 제3 단계와;A third step of calculating the maximum value of the turbine speed (Nt) max and the run up amount (ΔNt) and the learning change amount ΔD RL according to the run up amount when the condition of the second step is satisfied; 상기 제3 단계의 완료후 변속초기 구간 이후의 VTH 가 2.5 V 보다 큰가를 판단하여 조건을 크다고 판단되면, 새로운 학습 변화량(DRL)NEW을 구하고, 아니면 학습 변화량 △DRL를 0%로 한 후 종료하는 제4 단계와;After the completion of the third step, if it is determined that the VTH after the initial shift period is greater than 2.5 V, and the condition is determined to be large, a new learning change amount D RL NEW is obtained, or the learning change amount ΔD RL is 0%. Terminating a fourth step; 상기 제 1단계에서 조건을 만족하지 못하면, 변속 중기 구간에서 실 터빈 회전 변화율 dNt의 최소치가 0 이하인가를 판단하여 조건에 만족하면 학습 변화량 △DRL를 타이업시 1회의 학습량으로 설정한 후 상기 제4단계로 진입하는 제5단계로 이루어짐을 특징으로 하는 차량용 자동 변속기의 킥다운 변속시 해방측 초기듀티 학습 제어방법.If the condition is not satisfied in the first step, it is determined whether the minimum value of the actual turbine rotational change rate dNt is equal to or less than zero in the medium shift section, and if the condition is satisfied, the learning change amount ΔD RL is set to one learning amount during tie-up. The initial duty learning control method of the release side during the kickdown shift of the automatic transmission for a vehicle, characterized in that the fifth step to enter the fourth step. 제1항에 있어서, 제1 단계의 상기 학습 실시 조건은 기구적으로 변속이 시작시점에서 파워 온 상태이고, 전회의 변속이 업 시프트인 경우에 전회 변속 완료시점(SF)으로부터 현재의 변속 시작시점(SS)까지의 경과시간이 기준시간 이상 경과하였는가, 유온이 일정범위 이내인가, 고도조건이 기준값 이내인가, 구배가 기준값 이내인가로 판단함을 특징으로 하는 차량용 자동 변속기의 킥다운 변속시 해방측 초기듀티 학습 제어방법.The current shift start point according to claim 1, wherein the learning execution condition of the first stage is mechanically shifted to a power-on state at the beginning of the shift, and when the previous shift is an up shift. The release side at the time of kick-down of an automatic transmission for a vehicle, characterized in that the elapsed time to (SS) has elapsed more than the reference time, the oil temperature is within a certain range, the altitude condition is within the reference value, or the gradient is within the reference value. Initial Duty Learning Control Method. 제1항에 있어서, 제1 단계에서의 변속 초기 구간에서의 목표 변화율 dNic의 출력시간 동안 실 터빈 회전수의 변화율 dNt의 평균치에 대한 기준값이 dNid * Ckd(오프 다운 타이-업 판정용 계수) 임을 특징으로 하는 차량용 자동 변속기의 킥다운 변속시 해방측 초기듀티 학습 제어방법.The reference value for the average value of the rate of change dNt of the actual turbine speed during the output time of the target rate of change dNic in the initial period of shift in the first stage is dNid * Ckd (off-down tie-up determination coefficient). An initial duty learning control method of a release side during a kickdown shift of an automatic transmission for a vehicle. 제1항에 있어서, 제3 단계의 변속 말기 구간에서의 터빈 회전수의 최대치(Nt)max는 dNt 〉0에서 dNt ≤ 0 으로 변경될 때의 터빈 회전수로 설정됨을 특징으로 하는 차량용 자동 변속기의 킥다운 변속시 해방측 초기듀티 학습 제어방법.2. The vehicular automatic transmission as set forth in claim 1, wherein the maximum value of the turbine speed (Nt) max in the end stage of the third shift is set to the turbine speed when the change from dNt > 0 to dNt < How to control the initial duty learning of the release side during kickdown shift. 제1항에 있어서, 제3 단계에서의 런 업량(△Nt)은 (Nt)max - (Nt)j로 설정됨을 특징으로 하는 차량용 자동 변속기의 킥다운 변속시 해방측 초기듀티 학습 제어방법.The method of claim 1, wherein the run-up amount ΔNt in the third step is set to (Nt) max-(Nt) j. 제1항에 있어서, 제4 단계에서의 학습량 (DRL)NEW은 (DRL)OLD+ △DRL로 설정됨을 특징으로 하는 차량용 자동 변속기의 킥다운 변속시 해방측 초기듀티 학습 제어방법.The method of claim 1, wherein the learning amount (D RL ) NEW in the fourth step is set to (D RL ) OLD + ΔD RL .
KR10-2001-0055893A 2001-09-11 2001-09-11 Method of controlling an initial duty learning of the release part at the kick down shift for vehicles having an automatic transmission KR100391472B1 (en)

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