针对电动汽车行驶过程中路况变化频繁,其对应的配套感应电机给定转速和负载不断变化,从而导致系统平衡点也随之变化的特点和忽略铁损引起的控制不精确的问题,研究了基于动态平衡点的计及电动汽车用感应电机反馈耗散Hamilton控制问题.首先根据感应电机的工作特性计算出平衡点,然后选取适当的状态反馈,通过预置反馈的方法建立了系统的动态模型,并基于能量耗散特性实现了对电动汽车用感应电机在动态平衡点处的反馈耗散Hamilton控制,保证了整个系统的全局稳定性.最后仿真结果验证了该控制策略的有效性.
Because of the continuous variation of the setting speed and the load of the induction motor while the electric vehicle is driven on the road, the equilibrium point of the induction motor system is changing accordingly, We propose a feedback-dissipative Hamilton control to stabilize the dynamic equilibrium point of the induction motor in the electric vehicle, while reducing the imprecision-control effect caused by ignoring the iron losses. First, the dynamic equilibrium point is obtained from the working property of the induction motor; and then, a proper state feedback is chosen to build the dynamic model of the system. The Hamilton controller for the dynamic equilibrium point is designed based on the energy-dissipative nature. This method ensures the global stability of the system. Simulation validates the efficiency of the proposed control scheme.