[关键词]
[摘要]
对驱动磁悬浮平台的直线磁悬浮同步电动机(LMSSM)采用基于TS模型的模糊控制。研究LMSSM结构及运行机理,建立LMSSM的数学模型,包括电压方程、推力方程、运动方程。由于LMSSM的数学模型具有不确定性的特征,因此采用TS型模糊控制,选择速度误差e和速度误差的变化率ec作为输入的语言变量,在误差较大时采用灵敏度较高的三角形隶属度函数,在误差趋近于零时采用梯形函数,用函数的线性组合作为该模糊控制器的输出,根据对象的特征提炼出4条模糊控制规则;使用MATLAB对所设计的控制器进行仿真,结果表明,该控制器规则少,控制系统响应速度快,抗扰性能好。
[Key word]
[Abstract]
The linear maglev synchronous motor (LMSSM) which drives the maglev platform is controlled by TS model-based fuzzy control. The structure and operation mechanism of LMSSM are studied, and the mathematical model of LMSSM is established, including voltage equation, thrust equation and motion equation. Because the mathematical model of LMSSM has the characteristics of uncertainty, the TS fuzzy control is adopted, in which the speed error e and the change rate of speed error ec are selected as the input language variables, the triangle membership function with high sensitivity is adopted when the error is large. The trapezoidal function is adopted when the error approaches zero, and the linear combination of functions is adopted as the output of the fuzzy controller. According to the characteristics of the object, four fuzzy control rules are extracted. The designed controller is simulated by MATLAB software, and the results show that the controller has less rules. The control system has fast response speed and good anti-interference performance.
[中图分类号]
[基金项目]
国家自然科学基金项目(51575363)