一种用于无速度传感器异步电机控制的自适应滑模观测器

研究了一种用于异步电机控制的自适应滑模观测器。该观测器由两个滑模电流观测器、转子磁链观测器和速度估计部分组成。转子磁链观测器以两个电流观测器和速度观测器的输出作为输入,估计转速反馈到第二个电流观测器和转子磁链观测器。采用Lyapunov理论和Popov超稳定性理论对该方法的稳定性进行验证。该观测器具有设计新颖、对参数变化具有很强的鲁棒性等特点。通过Simulink仿真验证了该观测器的有效性。

Adaptive Sliding-Mode Observer for Speed-Sensorless Induction Motors

An adaptive sliding-mode observer for induction motor sensorless speed control was studied,which was composed of two sliding-mode current observers,a sliding-mode rotor flux observer and speed observer.The rotor speed observer takes the outputs from the second current observer and the rotor flux observer as its inputs and generates the estimated rotor speed as the output.The estimated speed is then fed back to the second current observer and the rotor flux observer for its adaptation.Flux and speed estimation is robust to parameter variations.The stability of the method was proven by Lyapunov theory and Popov criterion.