摘要
针对湿式离合器执行机构非线性强、时间延时及控制精度较低等问题,以某汽车自动变速器中湿式离合器的执行机构为研究对象,结合湿式离合器工作特点及控制策略要求,建立一种湿式离合器执行机构电液控制模型,并通过Matlab/Simulink软件进行仿真。研究结果表明,在充电阶段,电动液压阀柱塞、离合器位移,离合器流量首先达到正向最大值,随后逐渐减小直至趋于稳定;在放电阶段,电动液压阀柱塞、离合器位移,离合器流量首先达到负向最大值,随后逐渐增大直至趋于稳定,此外其整体变化趋势与输入电流一致;不同时刻,平均延迟时间不同,延迟时间会降低控制系统的控制精度;不同控制器及预测控制策略对应控制精度不同。
To the problems of strong nonlinear,time delay and lower control accuracy of wet clutch actuator,an automobile automatic transmission with wet clutch actuator is studied,according to the characteristics of the wet clutch and control strategy requirement,a wet clutch electro-hydraulic actuator control model is established,the simulation is carried out with Matlab/Simulink software.The results show that the charge phase,the displacement of electric hydraulic valve plunger and clutch,the clutch flow to achieve maximum positive displacement first,and gradually decreases stabilized.In the discharge phase,the displacement of electric hydraulic valve plunger and clutch,the clutch flow to achieve maximum negative displacement first,and gradually increased to stabilize,and the overall trend is consistent with the input current.In different times have different average delay time,and the delay time will reduce the control precision control of systems.The different control accuracy generate in different controllers and predictive control policies.
出处
《机械传动》
CSCD
北大核心
2015年第3期120-125,共6页
Journal of Mechanical Transmission
关键词
湿式离合器
执行机构
电液控制
仿真
Wet clutch
Actuator
Electro-hydraulic control
Simulation
作者简介
张增良（1973-），男，河北文安县人，副教授。
