基于FLC滑模切换SMC异步电动机防抖振控制  

FLC switching based SMC sliding mode for asynchronous motor control in anti buffeting

作　　者：陈庆协[1,2] 周风余[3,2] 李国栋[2] 吴春富[2] 刘念[1] 

机构地区：[1]四川大学电气信息学院,成都610065 [2]龙岩学院物理与机电工程学院,龙岩364012 [3]山东大学控制科学与工程学院,济南250100

出　　处：《四川大学学报（自然科学版）》2015年第5期1021-1027,共7页Journal of Sichuan University(Natural Science Edition)

基　　金：国家自然科学基金(61375084))

摘　　要：针对三相异步电动机标准滑模控制中的抖振问题,提出一种基于模糊逻辑滑模控制(FLC-SMC)算法的异步电动机防抖振控制策略.基于系统状态变量非连续函数所创建的"滑动面",引入模糊逻辑控制器来取代传统切换函数k1,2sgn s(1,2),并利用SMC等效控制和FLC控制器的配合实现状态轨迹沿滑模面的平滑移动.本文推导给出SMC控制率和FLC控制器隶属度函数,并据此设计FLC-SMC三相异步电动机仿真实验模型.通过仿真对比显示,所提算法对控制参数及负载转矩变化具有更好的鲁棒性,能有效起到防抖振效果.In order to solve the problem of chattering in standard sliding mode control of three-phase a-synchronous motor, this paper proposed a fuzzy logic based sliding mode （FLC-SMC） control strategyfor induction motor in anti buffeting control. This control strategy created a ＂sliding surface＂ base onthe system state variables of non continuous function, and introduced the fuzzy logic controller to replacethe traditional switching function kl,2sgn（sl,z ） , and it used the combined SMC and FLC controller torealize the state smoothly mobiling trajectory along the sliding surface. This paper deduced the SMCcontrol method and also presented the membership functions of FLC controller, according to which it de-signed the FLC-SMC three-phase asynchronous motor simulation model. Through the simulation com-parison showed, the proposed algorithm has better robustness control for parameters and load torquechange, which could effectively to prevent the chattering effect.

关 键 词：模糊逻辑 滑模控制 切换函数 三相异步电机 抖振 

分 类 号：TM464[电气工程—电器]