永磁同步直线电机小行程高精度定位控制

摘要

为实现永磁同步直线电机在小行程应用情况下的精确定位控制,提出了一种改进的无源性控制(PBC)算法,通过选择合适的阻尼系数和鲁棒因子,在外环中设计无源控制器取代传统PID控制的位置环和速度环,使系统控制性能得到较大改善.仿真结果表明,该方法降低了稳态误差,提高了控制精度,且抗负载扰动能力强.%In this paper, an improved passivity-based control (PBC) algorithm is presented in order to realize precise position control of a permanent magnet linear synchronous motor in small stroke applications.By selecting the appropriate damping coefficients and robustness factors, in outer loops, the passive control replaces the position loops and velocity loops controlled by traditional PID control, greatly improving the system control performance.Simulation results show that this algorithm can reduce the error of stable state, improve accuracy of the control and is of strong anti-load disturbance.