基于优化接合压力变化率的CVT离合器控制策略研究

摘要

On the basis of traditional control strategy, a new control strategy for CVT clutch is proposed, in which the changing rate of engaging pressure is optimized with three parameters (jerk, engine speed and fluid temperature). The results of vehicle test with 4 starting conditions show that using the control strategy proposed shortens the engaging time of clutch by 0.4s on average and improves the smoothness in vehicle starting with a jerk reducing by 1 m/s3 on average.%在传统控制策略的基础上,提出以冲击度、发动机转速和离合器油液温度3个参数来优化接合压力变化率的的CVT离合器控制策略.4种起步工况下的整车试验结果显示,采用所提出的控制策略,缩短了离合器接合时间(平均缩短了0.4s),提高了汽车起步平稳性(冲击度平均降低了1m/s3).