电动汽车PMSM滑模变结构控制  

Sliding Mode Variable Structure Control of Electric Vehicles PMSM

作　　者：刘庆华[1] 吕永健[1] 阳杰[1] 

机构地区：[1]空军工程大学航空航天工程学院,陕西西安710038

出　　处：《计算机仿真》2015年第12期129-132,359,共5页Computer Simulation

摘　　要：在电动汽车调速控制优化设计中,为了改善电动汽车电机驱动系统对参数变化敏感,提高其抗负载扰动能力,实现对电机的高精度和高调速性能控制,将一种新型幂次趋近律的滑模变结构控制策略引入永磁同步电机矢量控制。分析了趋近律参数对控制系统的影响,并对其进行了筛选和优化。上述控制策略可以解决滑模变结构控制的抖振问题。仿真结果表明,改进方案具有良好的控制精度和调速性能,对外部扰动有很强的鲁棒性,改善了系统的动静态品质,有效抑制了滑模变结构控制产生的抖振。A novel power reaching law of sliding model control （SMC） strategy is aplied to vector control system of Permanent Magnet Synchronous Machine （PMSM）, and optimal parameters of the two -power law are selected in order to solve the problem that the traditional proportion integral controller is sensitive to time - varying parameters and cannot meet the need of high - precision control and speed regulating performance of electric vehicles. The law can also solve the chattering problem of SMC. Simulation results show that the proposed strategy can solve the prob- lems effectively and show strong robustness to uncertain system parameters and disturbance. Dynamic and static per- formance of the system is improved, and the chattering of SMC is restrained.

关 键 词：永磁同步电机 矢量控制 双幂次趋近律 滑模变结构控制 

分 类 号：TM351[电气工程—电机]