永磁同步电动机中混沌运动的滑模变结构控制

Controlling chaos in permanent magnet synchronous motor via sliding mode scheme

以电机的交轴电压作为控制量,基于Lyapunov函数稳定性理论,提出采用滑模变结构方法控制永磁同步电动机中的混沌运动.数值模拟结果表明:该方法简单易行,施加控制时间不受限制,不仅能把电机系统转速稳定控制到混沌域内外任意期望的平衡点,且具有良好的控制鲁棒性和动态响应特性.研究结果对保证永磁同步电机系统的稳定运行具有较好的参考价值.

Permanent magnet synchronous motor （PMSM） shows chaotic behaviors while its parameters are in a certain range of values or under certain working conditions, which degrades the performance of the motor drive system. Hence, it is a key topic that how to eliminate or control chaos in PMSM. A sliding mode variable structure method for controlling chaos in PMSM based on Lyapunov function theory is presented, using the quadrature-axis voltage as a controlled parameter. The simulation results demonstrate that the method is very effective and easy to realize in the engineering, the random controlled rotate speed inside or outside of the chaotic domain can be obtained quickly, the control properties of response and robustness etc. are better than some of other methods. Research results may present some value references to maintain the PMSM system secure operation.