自适应逆推算法在感应电机控制中的应用

针对Krause和Thomas提出的带有两个定子绕组和两个转子绕组的二相等价电机模型,通过坐标变换得到沿着磁通向量转动的坐标方向上的电机动态模型.应用逆推技术设计了自适应控制器,通过选择Lyapunov函数来保证整个系统的稳定性,进而逐步导出控制率和参数自适应律.该方法克服了参数的不确定性以及负载扰动对系统的影响,确保了转子磁链和转速的跟踪性能以及系统的稳定性能.系统的转子磁链与转速能渐近跟踪给定的参考信号,仿真结果验证了该控制策略的有效性.

Application of Adaptive Backstepping Algorithm in the Control of Inductor Motor

Krause and Thomas had introduced a two phase equivalent machine representation with two rotor windings and two stator windings .We can get the motor dynamic model along the magnetic flux vector rotation direction by transforming the coordinate .In the case of some unknown system parameters , the adaptive backstepping method is used to design a nonlinear adaptive controller .Lyapunov function is chose to ensure the stability of the all system and get the controlling law and parameter adaptive law step by step .This kind of method reduces the impaction of system which includes the uncertainty of parameters and load disturbance .It also ensures system stability and the tracking performance of rotor flux and speed .The simulation results show the effectiveness of the control scheme .