首页|基于无模型的PMLSM改进自适应滑模自抗扰控制

基于无模型的PMLSM改进自适应滑模自抗扰控制

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为了提高永磁直线同步电机的自抗扰控制的动态响应性能和抗干扰性能,增强系统整体的控制性能,提出了一种基于无模型控制的改进滑模自抗扰控制策略.首先,基于滑模变结构原理以及无模型控制理论对自抗扰控制器中的扩张状态观测器和非线性状态误差反馈进行优化,建立了超局部模型,采用非奇异快速终端滑模控制代替原有的非线性状态误差反馈,同时设计相应滑模面与扩张状态观测器相结合,提高观测器对扰动因素的观测精确度的同时增强控制器的动态响应性能和抗干扰能力.然后设计了改进指数趋近率,通过引入系统状态变量使得控制器可以进行自适应调节,进一步提高系统的控制性能.通过李雅普诺夫理论证明了控制策略的稳定性,仿真和实验结果表明,该控制策略相对传统的自抗扰控制器所具备的优越性.
Improved adaptive sliding mode active disturbance rejection control for PMLSM based on model-free theory
In order to study and improve the dynamic response and anti-interference performance of the active disturbance rejection control of permanent magnet linear synchronous motor(PMLSM),and enhance the overall control performance of the system,an improved sliding mode active disturbance rejec-tion control strategy(ISM-ADRC)based on model-free control was proposed.Firstly,the extended state observer(ESO)and nonlinear state error feedback(NLSEF)in the ADRC were optimized by the sliding mode variable structure principle and model-free control theory.By establishing the ultra-local model and using nonsingular fast terminal sliding mode control to replace the traditional NLSEF,the corresponding sliding mode surface was designed to combine with the ESO.The dynamic response performance and anti-interference ability of the controller were enhanced by improving the observation accuracy of the ob-server to the disturbance factors.Then,based on this,an improved exponential reaching law was de-signed,and the controller can adjust itself by introducing system state variables,to further improve the control performance of the PMLSM system.The stability of the control strategy was proved by Lyapunov theory.Through simulation and experiment,it is confirmed that this control strategy has advantages over traditional ADRC.

permanent magnet linear synchronous motormodel-free controlnonsingular fast terminal sliding modeimproved exponential reaching lawactive disturbance rejection controlimproved extend-ed state observer

李争、张梓豪、王康涛、孙鹤旭

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河北科技大学 电气工程学院,河北 石家庄 050018

燕山大学 电气工程学院,河北 秦皇岛 066004

永磁直线同步电机 无模型控制 非奇异快速终端滑模 改进滑模趋近率 自抗扰控制 改进扩张状态观测器

国家自然科学基金国家自然科学基金国家自然科学基金河北省自然科学基金

518770705157704851637001E2021208008

2024

10.15938/j.emc.2024.01.014

电机与控制学报
哈尔滨理工大学

电机与控制学报

CSTPCD北大核心
影响因子：1.014
ISSN：1007-449X
年,卷(期)：2024.28(1)
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