摘要
基于永磁同步电机的动态数学模型设计调速系统,采用以转子磁场定向id=0控制和SVPWM调制相结合的矢量控制,速度调节器采用改进型指数趋近率滑模控制方法。为了减少负载扰动的影响,提出一种负载转矩观测器,并对控制量进行补偿。Matlab仿真结果表明,与一般指数趋近率滑模控制相比,改进型指数趋近率滑模控制器能有效提高系统的静态、动态特性和鲁棒性,同时转矩观测器可以准确辨识转矩值,实时对扰动进行补偿。
Based on the dynamic mathematical model of the permanent magnet synchronous motor,a speed control system is designed,and the rotor flux oriented vector control id =0 and the phase space vector pulse width modulation are introduced.The speed regulator employs the sliding mode control with the improved exponential reaching law.In order to reduce the effect of the load disturbances,a load torque observer,compensating the controlled quantity,is proposed.The Matlab simulation results indicate that,the sliding mode control with the improved exponential reaching law,can improve the performance both static and dynamic and robustness of the system,compared with traditional exponential approach law.The torque observer,real time compensating the disturbance,can identify the torque value accurately.
出处
《江南大学学报（自然科学版）》
CAS
2014年第4期421-426,共6页
Joural of Jiangnan University (Natural Science Edition)
关键词
永磁同步电机
矢量控制
负载转矩观测器
滑模控制
permanent magnet synchronous motor
vector control
load torque observer
sliding mode control
