KR101315818B1 - Static shift controlling device and methode for automatic transmission of vehicle - Google Patents

Static shift controlling device and methode for automatic transmission of vehicle Download PDF

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Publication number
KR101315818B1
KR101315818B1 KR1020110052205A KR20110052205A KR101315818B1 KR 101315818 B1 KR101315818 B1 KR 101315818B1 KR 1020110052205 A KR1020110052205 A KR 1020110052205A KR 20110052205 A KR20110052205 A KR 20110052205A KR 101315818 B1 KR101315818 B1 KR 101315818B1
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KR
South Korea
Prior art keywords
duty
engine torque
set value
automatic transmission
shift
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KR1020110052205A
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Korean (ko)
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KR20120133521A (en
Inventor
김준
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현대 파워텍 주식회사
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Priority to KR1020110052205A priority Critical patent/KR101315818B1/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H59/00Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/14Inputs being a function of torque or torque demand
    • F16H59/24Inputs being a function of torque or torque demand dependent on the throttle opening
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H59/00Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02Selector apparatus
    • F16H59/04Ratio selector apparatus
    • F16H59/045Ratio selector apparatus consisting of fluid valves

Abstract

The present invention is a step of determining whether the opening amount of the throttle valve exceeds the first set value during the static shift shifting process, and if the opening amount of the throttle valve exceeds the first set value, it is determined whether the variation of the engine torque exceeds the second set value. And if the variation amount of the engine torque exceeds the second set value, stopping the PID control and correcting the duty of the hydraulic pressure to a duty value corresponding to the engine torque value.

Description

STATIC SHIFT CONTROLLING DEVICE AND METHODE FOR AUTOMATIC TRANSMISSION OF VEHICLE}

The present invention relates to an automatic transmission, and more particularly, to an automatic transmission that reduces shift delay and shift shock due to a hydraulic response delay by applying an offset value of a constant duty corresponding to an engine torque value in a static shift shift control. The present invention relates to a static shift shift control method.

The automatic transmission sets an arbitrary target shift stage based on the shift table map table according to the shift speed of the driving vehicle and the throttle valve, and then operates various operating elements of the transmission gear mechanism through hydraulic duty control. Shift to

It is made of copper, thereby providing convenience of operation.

In such an automatic transmission, when the shift stage of the vehicle is shifted such as N-> D, N-> R, and the like, the engine speed is changed according to the change of the engine torque compensation value.

In this case, due to the characteristics of the automatic transmission dependent on the engine torque and the engine speed value, if a change in the engine torque and the engine speed occurs during the static shift control, PID control (Proportional Integral Derivative control) is performed. Control pressure duty Performs hydraulic control.

The technical structure described above is a background technique for assisting the understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.

In the case of the conventional automatic transmission, when the engine torque compensation value fluctuates largely during the static shift shifting process, the hydraulic response delay time is generated due to the hydraulic responsiveness due to the PID control, thereby increasing the shift time, and reducing the control accuracy. There was a problem that occurred.

The present invention has been made to improve the above-described problem, and the hydraulic pressure by PID control by applying an offset value of a certain duty corresponding to the engine torque value according to the opening amount of the throttle valve and the variation of the engine torque during the static shift control An object of the present invention is to provide a static shift shift control method of an automatic transmission that reduces shift delay and shift shock caused by responsiveness.

Static shift shift control method of the automatic transmission according to an aspect of the present invention comprises the steps of determining whether the opening amount of the throttle valve exceeds the first set value during the static shift shift process; Determining whether the amount of change in engine torque exceeds a second set value when the opening amount of the throttle valve exceeds the first set value; And stopping the PID control and correcting the duty of the hydraulic pressure supplied to the clutch of the automatic transmission to a duty value corresponding to the variation amount of the engine torque when the variation amount of the engine torque exceeds the second set value. Compensating the duty of the hydraulic pressure supplied to the clutch of the automatic transmission to the duty value corresponding to the variation amount of the engine torque, the step of step-up the duty value to maintain a constant for a set time, the rate of change of the turbine speed is a third When the set value is exceeded, the inclined duty output is performed to correct the duty of the hydraulic pressure supplied to the automatic transmission to a duty value corresponding to the variation amount of the engine torque.

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The present invention applies the offset value of a certain duty corresponding to the engine torque value according to the opening amount of the throttle valve and the variation of the engine torque during the static shift control to reduce the shift delay and the shift shock due to the hydraulic response delay by the PID control. To reduce the speed of the shift.

1 is a block diagram of a static shift shift control apparatus of an automatic transmission according to an embodiment of the present invention.
2 is a flowchart illustrating a static shift shift control method of an automatic transmission according to an embodiment of the present invention.
3 is a view illustrating a change in turbine rotational speed according to the engine torque variation of FIG. 2.

Hereinafter, a static shift control method of an automatic transmission according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, the definitions of these terms should be made based on the contents throughout the specification.

1 is a block diagram of a static shift shift control apparatus of an automatic transmission according to an embodiment of the present invention.

Static shift shift control apparatus of the automatic transmission according to an embodiment of the present invention, as shown in Figure 1, the throttle valve detection unit 10, the engine torque detection unit 20, the engine speed detection unit 30, turbine rotation It includes a water detector 40, a controller 50 and an actuator 60.

The throttle valve detector 10 detects an opening amount of a throttle valve (not shown) that adjusts the injection amount of fuel in conjunction with an accelerator pedal (not shown) that the driver operates for deceleration of the vehicle.

The engine torque detector 20 detects engine torque of a vehicle engine (not shown).

The engine speed detection unit 30 detects the rotation speed of the vehicle engine.

The turbine rotation speed detection part 40 detects the rotation speed of a turbine.

The actuator 60 controls the duty of the hydraulic pressure supplied to the clutch of the automatic transmission according to the control signal of the controller 50.

The control unit 50 has a look-up table for setting the duty value according to the opening amount of the throttle valve and the variation amount of the engine torque, so that the throttle valve detector 10, the engine torque detector 20, and the engine speed detector 30 are set. And the duty in accordance with the engine torque, engine rotation speed, and turbine rotation speed detected by the turbine rotation speed detection unit 40.

That is, the controller 50 suddenly changes the opening amount of the throttle valve when the accelerator pedal is suddenly operated during the engagement of the shift stage in the static shift shifting process. At this time, the engine torque is rapidly increased, and in this case, in the related art, hydraulic pressure is controlled through a PID control (proportional integral derivative control) according to the engine torque value and the engine speed, and a shift shock is generated in this process.

Therefore, the controller 50 detects a change in the shift lever position state through the shift lever switch (not shown), and when the shift shift starts, the corresponding duty is determined in the lookup table according to the opening amount of the throttle valve and the change amount of the engine torque. Extract the value.

In addition, by stopping the existing PID control, and by performing the correction to the offset value (offset) extracted from the look-up table to drive the actuator 60 to the corresponding duty value, to reduce the turbine speed.

Therefore, the shift shock generated in the static shift shifting process is reduced.

Hereinafter, the static shift shift control method of the automatic transmission will be described in detail with reference to FIGS. 2 and 3.

FIG. 2 is a flowchart illustrating a static shift shift control method of an automatic transmission according to an exemplary embodiment of the present invention, and FIG. 3 is a diagram illustrating a change in turbine rotational speed according to engine torque variation of FIG. 2.

The controller 50 determines whether the opening amount of the throttle valve detected by the throttle valve detector 10 exceeds the first set value in the static shift shift control process S10 through the shift lever switch (S20).

Here, the first set value is the opening amount of the throttle valve serving as a reference for determining whether the amount of fuel supplied to the engine is rapidly increased due to the driver's acceleration pedal sudden operation. In addition, when the opening amount of such a throttle valve increases rapidly, it increases rapidly corresponding to the engine torque value.

If the opening degree of the throttle valve exceeds the first set value, the controller 50 determines whether to perform the current PID control (S30), and if the duty is adjusted through the current PID control, the engine detected by the engine torque detector 20 is determined. It is determined whether the amount of change in the torque exceeds the second set value (S40).

On the other hand, if the opening amount of the throttle valve is equal to or less than the first set value, is not performing PID control, or the variation of the engine torque is equal to or less than the second set value, the process returns to step S90 to repeat the above process.

When the variation amount of the engine torque exceeds the second set value, the PID control currently being executed is stopped, and the duty is corrected through the actuator 60 (S50).

Here, the second set value is the amount of change in engine torque that serves as a reference for generating a shift shock in the static shift shifting process.

That is, the controller 50 stops the PID control (proportional integral derivative control) according to the change in the opening amount of the throttle valve when the accelerator pedal is rapidly operated during the engagement of the shift stage in the static shift shifting process. Correct the duty with the duty value set in the table.

In this case, the controller 50 extracts the duty value according to the variation amount of the engine torque from the lookup table, and corrects the duty by the duty value. In this case, as shown in FIG. 3, the duty value is stepped to a constant value. It is up.

As described above, when the set time has elapsed or the release condition is satisfied by the variation amount of the engine torque in the state where the duty is kept constant (S60), and the release condition is satisfied, the turbine rotation speed detection unit 40 detects it. It is determined whether the rate of change of the turbine rotational speed thus obtained is equal to or less than the third set value (S70).

Here, the third set value is the rate of change of the turbine rotational speed so that the impact generated by the movement of the automatic transmission due to the sudden increase in the turbine rotational speed can be alleviated.

When it is determined whether the change rate of the turbine rotation speed detected by the turbine rotation speed detection unit 40 is equal to or less than the third set value, if the change rate of the turbine rotation speed is equal to or less than the third set value for terminating the control of the hydraulic pressure for the shift control, the shift is performed. Quit.

On the other hand, if the change rate of the turbine rotation speed detected by the turbine rotation speed detection unit 40 exceeds the third set value, the hydraulic pressure is increased while gradually outputting the inclined duty to the target duty value little by little (S100).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, I will understand. Accordingly, the true scope of the present invention should be determined by the following claims.

10: throttle valve detector 20: engine torque detector
30: engine speed detection unit 40: turbine speed detection unit
50: control unit 60: actuator

Claims (5)

  1. Determining whether the opening amount of the throttle valve exceeds the first set value in the static shift shifting process;
    Determining whether the amount of change in engine torque exceeds a second set value when the opening amount of the throttle valve exceeds the first set value; And
    Stopping the PID control and correcting the duty of the hydraulic pressure supplied to the clutch of the automatic transmission to a duty value corresponding to the variation amount of the engine torque when the variation amount of the engine torque exceeds the second set value;
    Compensating the duty of the hydraulic pressure supplied to the clutch of the automatic transmission to a duty value corresponding to the variation amount of the engine torque, stepping up the duty value to maintain a constant for a set time, after which the rate of change of the turbine speed is zero When the set value is exceeded, the steep duty output is performed to correct the duty of the hydraulic pressure supplied to the automatic transmission to a duty value corresponding to the variation amount of the engine torque.
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KR1020110052205A 2011-05-31 2011-05-31 Static shift controlling device and methode for automatic transmission of vehicle KR101315818B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110052205A KR101315818B1 (en) 2011-05-31 2011-05-31 Static shift controlling device and methode for automatic transmission of vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110052205A KR101315818B1 (en) 2011-05-31 2011-05-31 Static shift controlling device and methode for automatic transmission of vehicle

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KR20120133521A KR20120133521A (en) 2012-12-11
KR101315818B1 true KR101315818B1 (en) 2013-10-08

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005106165A (en) 2003-09-30 2005-04-21 Mitsubishi Fuso Truck & Bus Corp Shift controller of transmission
KR20050047223A (en) * 2003-11-17 2005-05-20 현대자동차주식회사 Hydraulic control method during tip in being static shift and apparatus thereof
KR20050051393A (en) * 2003-11-27 2005-06-01 현대자동차주식회사 Tip in controlling method during static shift and apparatus thereof
JP2009299878A (en) 2008-06-17 2009-12-24 Toyota Motor Corp Vehicle control device and control method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005106165A (en) 2003-09-30 2005-04-21 Mitsubishi Fuso Truck & Bus Corp Shift controller of transmission
KR20050047223A (en) * 2003-11-17 2005-05-20 현대자동차주식회사 Hydraulic control method during tip in being static shift and apparatus thereof
KR20050051393A (en) * 2003-11-27 2005-06-01 현대자동차주식회사 Tip in controlling method during static shift and apparatus thereof
JP2009299878A (en) 2008-06-17 2009-12-24 Toyota Motor Corp Vehicle control device and control method

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