Automatic transmission synchronizer protection control method

Abstract

The invention discloses an automatic gearbox synchronizer protection control method. The automatic gearbox synchronizer protection control method comprises the steps of 1, collecting a whole vehicle input signal; 2, establishing a motor control module, wherein the motor control module is used for acquiring the whole vehicle input signal in real time and controlling the motor regulation according to the acquired whole vehicle input signal; and 3, establishing a gearbox synchronizer protection control module, wherein the gearbox synchronizer protection control module is used for acquiring the whole vehicle input signal and a motor control module signal in real time, and controlling an execution mechanism to execute different driving forces in sections to carry out synchronization according to the acquired signals. According to the automatic gearbox synchronizer protection control method, a synchronizer can be pushed close slowly when the rotating speed error of a motor is large and can be quickly engaged when the rotating speed error of the motor is small, so that the abrasion of the synchronizer is reduced on the basis of ensuring the synchronizing efficiency, and the service life of the synchronizer is prolonged.

Description

technical field [0001] The invention relates to the technical field of electric vehicle gearbox control, in particular to a method for protecting and controlling an automatic gearbox synchronizer. Background technique [0002] With the widespread promotion of pure electric systems in the market, the technology is becoming more and more mature. The main advantages of AMT automatic transmission control technology are: [0003] 1) 80% to 90% of the motor works in the high-efficiency zone; [0004] 2) Torque amplification makes the vehicle suitable for different areas, especially for mountainous road conditions; [0005] Improve energy saving and emission reduction. [0006] However, during the shifting process of the current synchronizer, the shifting mechanism and the synchronizer are combined through a predetermined fixed driving force when they are in contact with the synchronizer. Since the speed difference between the motor and the gearbox is not fully considered, the sp...

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Problems solved by technology

[0006] However, during the shifting process of the current synchronizer, the shifting mechanism and the synchronizer are combined through a predetermined fixed driving force when they are in contact with the synchronizer. Since the speed difference between the motor and the gearbox is not fully considered, the speed difference between the motor and the gearbox is large. will cause some damage to the synchronizer

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