一种新型模糊PID控制器在伺服系统的应用

摘要

In order to improve the swift dynamic characteristics of permanent magnet synchronous motor (PMSM) and re-t strain influence on servo system performance owing to uncertain factors of parameter diversification and load distur-bance, a novel fuzzy switch algorithm based on smooth switch is proposed and a new fuzzy PID compound controller was designed,which is adopted in the PMSM servo system.The simulative and experimental results show that the controller has advantages of both fuzzy controller and PID controller,which improves the dynamic performance and enhances the stability of system.%为了提高伺服系统的快速动态特性,抑制电机参数变化和负载大范围变化对系统性能的影响.提出了一种新颖的基于平滑切换的模糊PID控制的切换算法.在此基础上设计了相应的控制器,并应用于永磁同步电机(Permanent Magnet Synchronous Motor,简称PMSM)伺服系统控制.仿真和实验结果表明,该控制器同时具备模糊控制和PID控制的优点,切换平滑,加快了误差收敛的速度,提高了系统的动态性能,保证了系统的稳定性.