模糊滑模变结构矢量变频调速系统建模与仿真

当前,矢量控制是一种优越的交流电机控制方式,它模拟直流电机的控制方式使得交流电机也能取得与直流电机相媲美的控制效果。依据矢量控制的基本原理和方法,用MATLAB/SIMULINK模块构建了一个基于转子磁场定向的旋转坐标系下的交流异步电机矢量控制系统仿真模型,对其速度控制器提出并设计一种模糊滑模变结构控制算法。该控制算法具备模糊逻辑控制和滑模变结构控制两者优点,并且较好地解决了滑动模态的抖动问题。仿真结果表明了该设计的可行性以及具有良好的动静态性能、较强的鲁棒性。

Modeling and Simulation of Vector Control and Variable-Frequency Regulating Speed System Based on Fuzzy Sliding Variable Structure Control

Today, vector control（VC）is a superior control mode of induction mot or.It can obtain the same control effect of DC motor by modeling the control mode of DC motor.According to vector control＇s principle and method, MATLAB/SIMU LINK module was used to build a simulation model of AC motor vector control syst em based on the rotor flux oriented coordinate in this paper.Fuzzy sliding vari able structure control was proposed and employed in speed controller. The contro ller possessed the merits of fuzzy logic control and sliding mode variable struc ture control,and it can solve the problem of the chattering of sliding mode.Th e results of simulation indicate that the controller was workable with good robu stness and good dynamic and static performance especially in the field of engineering.