基于无源性异步电动机无速度传感器的调速研究

Speed Regulation of Asynchronous Sensorless Motor Based on Passivity Theory

针对交流异步电动机非线性、强耦合、大干扰等问题,采用无源性理论从能量交换的观点分析电机控制系统,从模型中分离出无功力,简化了控制器的设计,通过能量成型和阻尼注入等方法,推导出了全局稳定的非线性动态反馈控制率,同时为了避免传统机械速度传感器带来的麻烦,结合运用模型参考自适应的无速度传感器控制方法,进行MATLAB仿真,并与有速度传感器情况下进行对比,分析说明了异步电动机无源性调速在无速度传感器情况下的可行性和有效性。

Aiming at the problems like nonlinear,strong coupling,large disturbance of AC asynchronous motor,motor control systems were analyzed using the passivity theory from the point of energy exchange. The workless force was abstracted to simplify the controllers,and then a nonlinear dynamic control law which has global stability was obtained through the methods of energy- shaping and damping- injection. Simultaneously in order to avoid all kinds of trouble caused by traditional mechanical speed sensor,combined with the speed sensorless method of model reference adaptive control,the system was simulated in MATLAB,and compared with the case of speed sensor. The analysis shows the feasibility and validity of passive asynchronous motor speed regulation under the condition of sensorless.