基于自适应观测器的感应电机转速估计方法研究

介绍了一种能在线补偿定转子电阻的基于自适应观测器的感应电机转速估计方法.该转速估计方法只需检测定子电压电流作为输入,利用观测器观测出转子磁链和定子电流,并利用定子电流误差和转子磁链观测值辨识出转速、定子电阻和转子电阻,并反馈于观测器,确保电机转速估计对参数变化的鲁棒性.仿真及实验结果表明,此方法估计的速度能应用于无速度传感器矢量控制系统,并具有较好的辨识精度和鲁棒性.

Study on the Speed Estimation for Induction Motor Based on Adaptive Observer

A scheme for rotor speed estimation of induction motor based on adaptive observer was proposed,which can compensate stator and rotor resistance online.Just having stator voltages and currents as inputs,the scheme could obtain rotor flux and stator current by an adaptive observer,then the error of stator current and the estimated rotor flux are used to identify rotor speed,stator resistance and rotor resistance,which are finally feedback to the observer to ensure the robustness of rotor speed estimation to p...