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针对光电探测系统中常用的指向镜伺服系统,对其控制方法进行设计和仿真,构建了永磁同步电机的动力学模型.确立了空间矢量脉宽调制的算法,并给出仿真模型和结果.基于此系统进行了电流环、速度环、位置环的设计,采用位置前馈和重复控制器,最终得到一种易于实现、定位精度高的控制器.理论分析和仿真实验证明,该控制器能够较好地改善伺服系统的动态特性,具有调节时间短、无超调和动态响应准确快速等优点,并能有效提高系统位置控制精度,所得结论对此类伺服系统具有一定的指导意义.
Aiming at the commonly used pointing mirror servo system in photoelectric detection system, the control method is designed and simulated, and the dynamic model of PMSM is established. The algorithm of space vector pulse width modulation is established and the simulation model and results are given. Based on this system, the design of the current loop, velocity loop and position loop is carried out, and the position feedforward and repetitive controller are used to get an easy-to-implement and high-precision controller.Theoretical analysis and simulation results show that the controller can Which can improve the dynamic characteristics of the servo system better, has the advantages of short adjustment time, no overshoot and accurate and fast dynamic response, and can effectively improve the position control precision of the system. The conclusions obtained are of guiding significance for such servo systems.