预测函数控制在感应电机调速系统中的应用

针对感应电机调速系统,提出预测函数—内模双环控制。预测函数控制有计算量小、跟踪速度快等优点,内模控制的参数调节方便,且能抑制参数变化在系统性能上影响,将两者原理有机结合,通过分析感应电机数学模型,电流环采用内模控制,转速环采用预测函数控制。仿真结果表明,采用预测函数—内模双环控制后,系统的动态性和静态性能都得到明显改善。

Research of Predictive Functional Control for Speed Regulating System of Induction Motor

For the induction motor regulating speed control system,a prediction function-internal model loop con-troller is proposed. The obvious advantages of predictive functional controller are the simple evaluation and fast tracking speed. Meanwhile,an internal model controller can have simple parameters adjustment and inhibit the af-fection of the changing parameters on the system performance. The combination of internal model controller with predictive functional control theory as an organic unit was applied in induction motor speed regulating control sys-tem. An internal model controller is used In the current loop,and a predictive functional controller is applied in the speed loop. From the results of simulation,we can see there are significant improvements in dynamic and static per-formance of the designed system.