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Electric control mechanical automatic transmission gear shifting control method and system, vehicle and medium

A technology of automatic transmission and shift control, applied in the direction of transmission control, mechanical equipment, components with teeth, etc., can solve the problem of unresolved shift shock, affecting the life of the transmission system, overshooting of the shift control mechanism, etc. , to achieve the effect of improving shift comfort, reducing impact and reducing overshoot

Active Publication Date: 2021-11-23
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the electromechanical automatic transmission (AMT) usually adopts the automatic control mechanism of hydraulic, electric and pneumatic systems. In the pneumatic control system, due to the strong compressibility and nonlinearity of the gas, the shift process is rough and the control is very difficult. The excessive impact of the steering structure during the shifting process will not only affect the comfort of the occupants, but also affect the life of the transmission system
Existing shift control systems often start from the perspective of shift timing, study the timing relationship of each shift link, coordinate and control the shift timing, and improve shift comfort as much as possible, but do not solve the shift process. The shock problem of the shift mechanism still exists

Method used

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  • Electric control mechanical automatic transmission gear shifting control method and system, vehicle and medium
  • Electric control mechanical automatic transmission gear shifting control method and system, vehicle and medium
  • Electric control mechanical automatic transmission gear shifting control method and system, vehicle and medium

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Embodiment 1

[0047] refer to figure 1 , this embodiment discloses a shift control method for an electromechanical automatic transmission. The shift control method for an electromechanical automatic transmission provided in this embodiment is based on the shift control system of an electromechanical automatic transmission Fundamentally, in one embodiment, the shift control system of the electromechanical automatic transmission includes a shifting head displacement sensor, a TCU controller, a gear position sensor, a shifting operating mechanism and a shifting solenoid valve, and the shifting head displacement Sensors, gear position sensors, gearshift operating mechanisms and gearshift solenoid valves are all connected to the TCU controller. The shift control mechanism includes shift dial, combination sleeve, synchronous ring and shift ring gear, etc. The combination sleeve is connected with the shift dial, and the shift dial drives the combination sleeve to move. When in gear, after the sh...

Embodiment 2

[0075] Embodiment 2 of the present invention also provides another shift control system of an electromechanical automatic transmission, including:

[0076] The collection module is used to collect the position signal of the gear shifting head, and judge the specific position of the coupling sleeve;

[0077] A judging module, used to judge the target gear at the next moment when the combination sleeve is in the neutral position;

[0078] The first execution module is used to adopt the first-stage control strategy, that is, adopt the PID with friction feedforward when the target gear is not neutral and the position of the shift knob is such that the coupling sleeve is not in contact with the synchronization ring. control;

[0079] The second execution module is used to adopt the control strategy of the second stage when the target gear is not neutral, and the position of the shift knob is such that the coupling sleeve has contacted the synchronous ring, but has not yet contacte...

Embodiment 3

[0082] Embodiment 3 of the present invention also provides a vehicle. The components of the vehicle may include but not limited to: a vehicle body, one or more processors, a memory, and a bus connecting different system components (including the memory and the processor).

[0083] As a computer-readable storage medium, the memory can be used to store software programs, computer-executable programs and modules, such as program instructions corresponding to the shift control method of the electromechanical automatic transmission in the embodiment of the present invention. The processor executes various functional applications and data processing of the vehicle by running the software programs, instructions and modules stored in the memory, that is, realizes the above-mentioned shift control method of the electromechanical automatic transmission.

[0084] The memory may mainly include a program storage area and a data storage area, wherein the program storage area may store an ope...

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Abstract

The invention discloses an electric control mechanical automatic transmission gear shifting control method and system, a vehicle and a medium. According to the electric control mechanical automatic transmission gear shifting control method, the gear shifting process is divided into three stages, and different control algorithms are adopted in each stage; integral separation PID control is adopted in the second stage; in an integral separation PID control algorithm, a gear shifting head displacement is set as a control variable, and a system error threshold epsilon is set; and when the gear shifting head displacement deviates greatly from the set system error threshold epsilon, the integral action is canceled; when the gear shifting head displacement is close to the set system error threshold value epsilon, integral control is introduced; and PID (Proportion Integration Differentiation) control with friction force feedforward is adopted in the first stage and the third stage. According to the electric control mechanical automatic transmission gear shifting control method, by combining the PID control algorithm based on feed-forward compensation and the integral separation PID control algorithm, the shifting head displacement of a gear shifting control mechanism is controlled on the basis of the idea of composite control, so that impact in the gear shifting process is reduced, the gear shifting comfort is improved, and the service life of a transmission system is prolonged.

Description

technical field [0001] The present invention relates to the technical field of shift control, in particular to an electromechanical automatic transmission shift control method, system, vehicle and medium. Background technique [0002] The basic structure of the electro-mechanical automatic transmission (AMT) of a car is to add a gear shift actuator, a clutch actuator, and corresponding sensors and control units on the basis of a manual transmission to realize the automatic gear shift process. At present, the electromechanical automatic transmission (AMT) usually adopts the automatic control mechanism of hydraulic, electric and pneumatic systems. In the pneumatic control system, due to the strong compressibility and nonlinearity of the gas, the shift process is rough and the control is very difficult. The excessive impact of the steering structure during the shifting process will not only affect the comfort of the occupant, but also affect the life of the transmission system....

Claims

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Application Information

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IPC IPC(8): F16H61/04F16H63/42
CPCF16H61/04F16H61/0437F16H63/42
Inventor 郭彦颖宫艳峰段加全李显宋志平
Owner CHINA FIRST AUTOMOBILE