基于滑模观测器的永磁同步电机变结构鲁棒控制

提出一种由一个变结构控制器和一个滑模观测器组成的控制系统,用于永磁同步电机的无传感器鲁棒控制.首先利用Lyapunov稳定性原理分析得到观测器的收敛条件及自适应率,并证明了其稳定性,然后以转速误差为参量建立滑模面,构造出变结构速度控制器,推导出自适应速度控制律,并得到速度控制的参考电流和参考电压.该方案的控制性能不依赖于电机参数和干扰变化,具有较强的鲁棒性.仿真结果验证了该方案的有效性与正确性.

Robust variable structure control of PMSM based on sliding mode observer

A robust control scheme,composed of a variable structure controller and a sliding-mode observer,is presented for permanent magnet synchronous motor(PMSM) drive in this paper.The convergence condition and controlling rule of the observer are obtained by utilizing Lyapunov theory.By using the speed error as the sliding surface,the controller's adaptive law is deduced and the required voltages and currents are then solved.The scheme is insensitive and robust to the parameters' variation and uncertainties.Simul...