基于全阶自适应状态观测器速度辨识方法的改进

The Improved Method of the Full-order Adaptive State Observer' s Estimation of Speed

异步电机无速度传感器矢量控制系统是目前研究的热点,本文采用全阶自适应状态观测器,在传统的PI自适应律的基础上,加入了模糊自适应PI控制策略,对转速进行估计。最后,通过MATLAB仿真数据对比,得出改进型的全阶自适应状态观测器速度辨识系统对电机定、转子电阻变化的鲁棒性增强的结论。

The vector control system of the induction motor speed sensorless is a focus on the current research. On the basis of traditional PI adaptive law, we use the full-order adaptive state observer, adding the strategy of the fuzzy adaptive PI control, in order to estimate the motor＇ s speed. Finally, with the comparison with the Matlab simulation＇ s data, we can obtain the conclusion that the improved full-order adaptive state observer＇ s motor speed identification system can gets enhanced robustness with the stator and rotor resistance variation.