摘要
传统滑模观测器存在抖振和高次谐波的问题,难以满足系统高性能调速要求。为改善这一问题,设计并实现了一种将反电势估算值反馈引入到定子电流观测计算中,并采用扩展卡尔曼滤波器和饱和函数的改进型滑模观测器转子位置估算方法。通过实验结果表明,该改进型滑模观测器能在很大程度上削弱抖振和高次谐波带来的负面影响,并具有良好的鲁棒性及动态跟踪性能。Matlab仿真及DSP实验验证了该改进型滑模观测器的有效性与实用性。
The high harmonic and buffeting problem exist in traditional sliding mode observers, which could not meet system requirements of high dynamic control. To overcome this problem, an improved sliding mode observer with estimated back-EMF（electromotive force） feeding back to the calculation of stator current observation, extended Kalman filter and saturation function were designed and implemented. The experimental results show that the improved sliding mode observer can significantly weaken the negative impact of buffeting problem and higher harmonic and can obtain a perfect performance of dynamic tracking and a nice robustness. The Matlab simulation and DSP experimental results verify the availability of the improved sliding mode observer.
出处
《电气传动》
北大核心
2013年第7期19-22,30,共5页
Electric Drive
关键词
永磁同步电动机
无传感器控制
滑模观测器
卡尔曼滤波
饱和函数
permanent magnet synchronous motor （PMSM）
sensorless control
sliding mode observer（SMO）
Kalman filter
saturation function
