基于QFT的永磁同步电机伺服系统PID控制器的设计  

Design of PID Controller for PMSM Servo System Based on QFT

作　　者：刘冬 李浩东 何焯毅 罗伟维 LIU Dong;LI Haodong;HE Zhuoyi;LUO Weiwei(School of Automation,Guangdong University of Technology,Guangzhou 510006,China)

机构地区：[1]广东工业大学自动化学院,广东广州510006

出　　处：《电机与控制应用》2021年第8期36-43,共8页Electric machines & control application

摘　　要：针对永磁同步电机(PMSM)伺服系统在运行过程中因转动惯量变化而带来负面影响的问题,提出了基于定量反馈理论(QFT)的PID控制器的设计方法。通过将转动惯量视为参数变化量,从而获得了被控对象的不确定性模型,然后设计性能指标,运用QFT,在Nichols图上合成了PID型控制器。仿真和试验结果表明,所提方法有效改善了PMSM伺服系统转动惯量变化带来的影响,提升了系统的鲁棒性。最后,通过与PI控制器的对比表明了其优异性。During the operation,the change of moment of inertia has a negative influence on permanent magnet synchronous motor(PMSM)servo system.Therefore,the quantitative feedback theory(QFT)is used to design PID controller.The moment of inertia is regarded as the parameter variation,and the uncertainty model of the controlled plant is obtained.Then the expected performance index is set.The PID controller is synthesized on Nichols diagram by QFT.Simulation and experimental results show that the proposed method can effectively improve the influence of moment of inertia change of PMSM servo system and enhance the robustness of the system.Finally,the comparison with PI controller shows its superiority.

关 键 词：永磁同步电机(PMSM) 定量反馈理论(QFT) 惯量变化 PID 

分 类 号：TM351[电气工程—电机]