摘要
为了提升异步电机控制系统的动态性能,提出了一种基于内模控制与模糊滑模控制的联合控制策略。首先,通过分数阶函数对二自由度内模控制器进行改进,实现了控制器的抗扰动性能和跟踪性能分离处理。然后,考虑电机在低速运行时对外部扰动较为敏感,设计了基于双曲正切函数与Fal函数的负载扰动观测器,对负载扰动进行实时估计,并将估计值补偿到滑模控制器中。最后,为了进一步克服低速状态下滑模控制器的抖振问题,改进了非奇异快速终端滑模面,同时根据模糊控制原理对指数趋近律的参数进行实时选取。仿真结果表明,所提控制策略可以提高异步电机在低速运行状态下的跟踪性能与抗扰动性能。
In order to improve the dynamic performance of asynchronous motor control system,a joint control strategy based on internal model control and fuzzy sliding mode control is proposed.Firstly,the internal model controller with two degrees of freedom is improved by fractional order function,and the anti-disturbance performance and tracking performance of the controller are separated.Then,considering that the motor is sensitive to external disturbance at low speed,a load disturbance observer based on hyperbolic tangent function and Fal function is designed to estimate the load disturbance in real time,and the estimated value is compensated to the sliding mode controller.Finally,in order to further overcome the chattering problem of the sliding mode controller at low speed,the non-singular fast terminal sliding mode surface is improved,and the parameter of the exponential reaching law is selected in real time by the fuzzy control principle.The simulation results show that the proposed control strategy can improve the tracking performance and anti-disturbance performance of the asynchronous motor at low speed.
作者
郭栋
杨子
王巍
黄磊
GUO Dong;YANG Zi;WANG Wei;HUANG Lei(School of Electrical Engineering,Liaoning University of Technology,Jinzhou 121001,China)
出处
《控制工程》
北大核心
2025年第4期621-627,共7页
Control Engineering of China
基金
国家自然科学基金面上项目(62273170)
辽宁省科技攻关计划项目工业重大专项(2020JH1/10100021)
辽宁省教育厅科学研究经费项目重点攻关项目(JZL202015407)
辽宁省教育厅高等学校基本科研项目(LJZZ212410154032)。
关键词
内模控制
负载扰动观测器
非奇异快速终端滑模
模糊滑模控制
硬件在环
Internal mode control
load disturbance observer
non-singular fast terminal sliding mode
fuzzy sliding mode control
hardware in the loop
