摘要
针对永磁同步电机(PMSM)在运行过程中易受扰动影响以及传统滑模控制器使用符号函数易给系统带来高频抖振使得控制效果不佳等问题,设计了一种基于改进扩展状态观测器(ESO)和分数阶协同的PMSM转速控制策略。首先,建立了含有扰动项的PMSM数学模型;其次,对传统超螺旋算法进行改进,基于二次函数设计了光滑可微的新型分段函数代替传统符号函数,用自适应函数修正滑模增益,在此基础上设计了基于改进超螺旋算法的改进ESO观测系统扰动并反馈给转速环控制器;最后,设计了分数阶非线性比例积分流形,并基于该流形设计了PMSM分数阶协同转速环控制器。仿真结果表明,该策略较传统协同控制和传统滑模策略在空载启动时调节时间分别减少了50%和70%、在负载突变时转速突变值分别减少了74%和82%,该策略可以提高系统的抗干扰能力以及动、静态性能。
Aiming to address the susceptibility of permanent magnet synchronous motors(PMSM)to disturbances and the traditional sliding mode controller employs the symbol function,resulting in high-frequency buffeting to the system and poor control performance,a PMSM speed control strategy is designed based on an improved extended state observer(ESO)and fractional order synergetic control.Firstly,a mathematical model of PMSM with disturbances term is established.Secondly,the traditional super-twisting algorithm is enhanced,based on the quadratic function,a novel smooth differentiable piecewise function is devised to substitute the traditional symbolic function,and adapting the sliding mode gain using an adaptive function.Building upon this,an improved ESO based on the improved super-twisting algorithm is developed to observe system disturbances and provide feedback to the speed loop controller.Finally,a fractional order nonlinear proportional integration manifold is devised,leading to the design of a PMSM fractional order synergetic speed loop controller based on this manifold.The simulation results demonstrate that this strategy reduces the adjustment time by 50%and 70%respectively compared to traditional synergetic control and traditional sliding mode strategy during no-load start,and reduces the speed sudden change value by 74%and 82%respectively during load sudden change.This strategy can improve the system′s anti-interference ability and dynamic and static performance.
作者
任金霞
姚广辉
王金荣
REN Jinxia;YAO Guanghui;WANG Jinrong(School of Electrical Engineering and Automation,Jiangxi University of Science and Technology,Ganzhou 341000,China)
出处
《组合机床与自动化加工技术》
北大核心
2025年第5期156-160,167,共6页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家自然科学基金项目(71361014)
江西省研究生创新专项资金项目(YC2023-S653)。
关键词
永磁同步电机
分数阶
改进超螺旋算法
扩展状态观测器
协同控制
permanent magnet synchronous motor
fractional order
improved super-twisting algorithm
extended state observer
synergetic control
