基于自适应观测器的感应电机无速度传感器DTC系统的仿真

Simulation of the Inductor Motor Speed Sensorless DTC System Based on Adaptive Observer

在Matlab/Si mulink下搭建了一个基于自适应观测器的感应电机无速度传感器直接转矩控制(direct torque control,DTC)系统仿真平台,建立了鲁棒自适应全阶状态观测器并给出了基于鲁棒观测器的速度辨识律。应用Lyapunov稳定性理论,观测器的增益借助于Matlab中的LMI工具箱求解线性矩阵不等式得到。仿真结果表明该模型具有很好的稳态性能,并具有良好的鲁棒性。

A speed sensorless direct torque control system of induction motor with Matlab/Simulink based on an adaptive observer was constructd. A full-order adaptive state observer was created and a speed identification law was proposed based on the proposed observer. By using Lyapunov stable theory, the gain of the observer can be obtained by solving a line matrix inequality （LMI） in Matlab LMI toolbox. The result of simulation indicates that the proposed observer has good steady performance and good robustness.