基于线性二次型最优滑模控制的永磁同步电机矢量控制系统  

LQ Optimal Sliding Mode Control for Vector Control System of PMSM

作　　者：逄海萍[1] 韩宁 PANG Hai-ping;HAN Ning(Qingdao University of Science&Technology,Qingdao 266061 China)

机构地区：[1]青岛科技大学,山东青岛266061

出　　处：《自动化技术与应用》2018年第10期4-8,共5页Techniques of Automation and Applications

基　　金：国家自然基金(编号60940018;61104004);山东省自然基金(编号ZR2001FQ006)

摘　　要：针对永磁同步电机(PMSM)矢量调速系统易受内部参数变化及外界干扰等问题,将线性二次型最优控制(LQ)理论与积分滑模控制(SMC)相结合,提出一种PMSM矢量控制系统的线性二次型最优滑模控制器(LQSMC)的设计方法。首先建立永磁同步电机在矢量控制下的数学模型以求得标称系统的最优控制律,然后构造最优滑模面和最优滑模控制律,使得理想滑动运动满足二次型性能指标的最优值,并且对于满足一定条件的外界扰动具有完全的鲁棒性。通过仿真,将最优滑模控制与最优控制进行对比,结果表明,当扰动加入时,最优滑模控制具有更好的抗干扰能力。Combining the linear quadratic optimal control(LQ)theory and integral sliding mode control(SMC),a design method of linear quadratic optimal sliding mode controller(LQSMC)for permanent magnet synchronous motor(PMSM)vector control system is proposed.It can reduce affect by system uncertain in internal parameters and external disturbance and other issues.Firstly,the optimal control law of nominal system is obtained by mathematical model,and then the optimal sliding mode and the optimal sliding mode control law are constructed,so that the ideal sliding motion satisfies the quadratic performance index,and has complete robustness to external disturbances that satisfies certain conditions.By comparing LQSMC with LQ,the simulation results show that the optimal sliding mode control has better anti-interference ability when the disturbance is added.

关 键 词：永磁同步电机 最优控制 最优滑模控制 矢量控制 

分 类 号：TM301.2[电气工程—电机]