CVT起步离合器模糊控制算法研究

Research on Fuzzy Control Algorithm of CVT Starting Clutch

探讨了汽车无级变速器控制的关键技术之一———汽车起步离合器的控制技术,并针对汽车起步时条件的多样性以及驾驶员意图的不确定性,研究了适用于复杂条件的模糊控制算法.在离合器的滑磨阶段,把动态跟踪发动机转速的油压作为控制目标,离合器结合的控制便转化为一闭环控制.结果表明汽车能在任意工况下平顺快速起步.因此,本研究为控制CVT(Continuously Variable Transmission)起步离合器这种时变、非线性系统提出了一种简单可行的解决方法.

This paper discussed the control algorithm of vehicle starting clutch,which is one of the key technics for Continuously Variable Transimission （CVT） control. Considering various conditions of vehicle starting and indeterminate intentions of drivers, a fuzzy control algorithm, which could meet the requirements of complex conditions, was presented. On the skidding stage of dutch combining, the pressure of oil, which tracked the speed of engine dynamically, was selected as the control target, so the combing process was regarded as a dosed loop control system. The result showed that vehicle could start srroothly and rapidly under random working conditions. So this paper presented a simple and effective method to control the time-changed and non-linear CVT system.