基于滑模的永磁同步电机速度跟踪控制

摘要

文中针对永磁同步电机(PMSM)的速度跟踪控制,提出一种基于平衡点处的PMSM滑模控制器设计方法,该方法是首先建立d-q轴下的数学模型,计算在给定转速值时平衡点PMSM系统的控制输入电压值,然后对PMSM与平衡点系统相减得到的误差系统,设计滑模面,根据滑模理论知识,获得相应的等效滑模控制器,并结合所得到平衡点PMSM系统的控制输入电压值,得到PMSM控制输入电压,实现电机转速输出对给定值的高精度跟踪.最后,通过MATLAB数值仿真,验证了该方法的有效性.%This paper,for permanent magnet synchronous motor (PMSM) speed tracking control,put forward a kind of equilibrium point of permanent magnet synchronous motor (PMSM) sliding mode controller design method based on,the method first established d-q mathematical model,calculated a value balance of PMSM system control input voltage at a given speed value,then on PMSM and balance system was obtained by subtracting the error system,in the design of the sliding surface,based on sliding mode theory,the corresponding equivalent sliding mode controller,and combined with the balance of PMSM system control input voltage value,got PMSM control input voltage,rotation speed of the motor output for a given value of the high precision tracking.Finally,the effectiveness of the proposed method is verified by the MATLAB simulation.