一种新型永磁同步电动机伺服控制系统设计

Design of a novel permanent magnet synchronous motor servo control system

为改善交流伺服系统的性能,提出一种新型永磁同步电动机伺服控制系统结构。位置控制器采用PI型,速度闭环中仅采用一个可调的速度反馈系数。在速度动态中,由于没有积分作用,不会出现速度环饱和现象,速度环始终处于闭环调节过程中。仿真和实验结果表明:在系统极点配置一样的情况下,新型结构伺服系统位置跟踪的幅值误差和相位误差均比传统结构伺服系统小。

In order to improve the performance of AC servo system, this paper presents a new control system of permanent magnet synchronous motor servo system. The position controller adopts PI type, and only one adjusta- ble speed feedback coefficient is adopted in the speed loop. Therefore, in the speed of dynamic, there will be no saturation of the velocity loop because there is no integral effect, and the speed loop is always in the process of closed-loop regulations. The simulation and experimental results show that the new structure of position tracking servo system of the amplitude error and phase error are smaller than the traditional structure of position tracking servo system of the amplitude error and phase error in the case of the same system pole assignment the system poles of the same situation.