自适应反步法感应电机控制器的设计和仿真研究

Design and Simulation Research for Controller of Induction Motor by Adaptive Backstepping Method

基于静止d-q坐标系下的感应电机数学模型,在参数不能确定的情况下,通过位置、速度、磁链和线圈电流信号,采用非线性反步法设计了感应电机的自适应位置控制器,该控制器不依赖于电机参数。基于MATLAB/Simulink仿真平台,建立感应电机位置控制系统仿真模型。仿真结果表明:用该方法设计的控制器得到的位置跟踪误差迅速渐近趋于零,达到了较好的位置控制性能。

The mathematic model of induction motor in the stator fixed reference frame was adopted. Under the condition that the parameters in motor are uncertain, using position signal, velocity signal, flux signals and current signals, an adaptive backstepping position controller was designed without parameters knowledge. Based on the MATLAB/Simulink, the model of this induction motor＇s nonlinear position control system was set up. The simulation results show that this proposed controller can obtain better position control characteristic and the position tracking error goes to zero asymptotically,