DCT离合器电液控制阀的非线性压力控制

为解决DCT(Dual Clutch Transmission)离合器电液控制阀的液压跟踪控制问题, 建立了面向控制器设计的非线性模型, 并应用backstepping控制方法设计了DCT离合器电液控制阀的非线性控制器。为验证控制器的有效性, 在AMESim中搭建了DCT离合器电液控制阀及离合器的仿真模型, 给定不同的参考液压, 进行AMESim-Simulink联合仿真, 并考虑液压油的弹性模量以及温度变化对DCT离合器电液控制阀输出液压的影响, 给出相同实验条件下在PI控制器作用下的仿真结果对比。仿真实验表明, 该非线性控制器能很好地实现DCT离合器电液控制阀输出液压的跟踪控制, 并对液压油的弹性模量以及温度变化具有鲁棒性，控制效果优于PI控制器。

Nonlinear Pressure Control for Clutch Electro-Hydraulic Control Valve of DCT

For a better pressure tracking performance of DCT (Dual Clutch Transmission) clutch electro\|hydraulic control valves, a control-oriented nonlinear DCT electro-hydraulic control valve model is presented and the backstepping technique is used to derive the nonlinear controller. To verify the effectiveness of the proposed controller, a simulation model of DCT clutch electro\|hydraulic control valve and clutch is established in AMESim environment and simulation combining Simulink and AMESim are conducted tracking different references, with the influence of the bulk modulus changing and temperature changing of oil considered. As comparison, simulation results with the control of a well\|toned PI controller under the same circumstance as that of the proposed controller are given. Finally, simulation results are provided to demonstrate the effectiveness of the proposed controller.