关键词: 电磁执行器, 机械式自动变速器, 控制策略, 实验台

Abstract:

To improve the shifting quality and reduce the shift time of AMT, a new type of AMT gearshift system based on a 2-DOF electromagnetic actuator was developed. The structure and working principle of the actuator was described and the static, dynamic characteristics were investigated through experiments. The shift synchronization process was divided into four stages, and variable structure control strategies based on PID and fuzzy control were proposed and simulated. The test bench was developed and used to verify the gearshift system and the proposed variable structure gearshift control strategy. The results show that the proposed control strategy can improve the shift quality and reduce the impact and friction work per unit of the gearshift process.

Key words: electromagnetic actuator, automated manual transmission(AMT), control strategy, test bench