自动机械传动系统起步过程中离合器的自适应控制策略研究

本文对自动机械传动(AMT)及自动变速操纵系统(ASCS)中的关键技术(离合器控制)进行了研究,提出了离合器的自适应控制策略.该策略不同于当前所采用的控制策略,它根据离合器输出轴转速和发动机转速与离合器输出轴转速差,得到理想离合器输出轴加速度,并通过控制离合器驱动机构的行程增量,使得实际离合器输出轴加速度和理想的相一致.该策略可实现起步过程中的自适应控制,满足驾驶员平稳、快捷的要求,同时具有所需输入信号少的特点,试验证明这一策略是完全可行的.

SELF-ADAPTABLE CONTROL STRATEGY OF THE CLUTCH IN THE STARTING PHASE FOR THE AUTOMATED MECHANICAL TRANSMISSION OF VEHICLES

Automated mechanical transmission (AMT) was formed by combining the automatic shift control system (ASCS) with the traditional fixed axis mechanical transmission. The crucial component in an ASCS is the clutch control, which is the key element in realizing the automatic control of an AMT. This paper proposed an optimal clutching strategy, which takes the input axis rotation speed increment as the control target, the difference in rotation speed between the engine and the clutch input axis as the input reference. The strategy takes the clutch drive mechanism as the direct control object and makes possible the realization of self-adaptable control of clutch in ASCS. On-vehicle tests prove the validity and rationality of the clutch self-adaptable control strategy.