Current deviation decoupling control based on sliding mode active disturbance rejection for PMLSM

Ximei ZHAO; Cen WU

doi:10.37188/OPE.20223004.0431

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Current deviation decoupling control based on sliding mode active disturbance rejection for PMLSM

Micro/Nano Technology and Fine Mechanics | 更新时间：2022-02-26

- Current deviation decoupling control based on sliding mode active disturbance rejection for PMLSM
- Optics and Precision Engineering Vol. 30, Issue 4, Pages: 431-441(2022)
- 作者机构：
  
  沈阳工业大学电气工程学院，辽宁沈阳 110870
- 作者简介：
- 基金信息：
- DOI：10.37188/OPE.20223004.0431
  CLC： TM351
- Received：09 July 2021，
  
  Revised：05 September 2021，
  
  Published：25 February 2022
- 稿件说明：
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赵希梅,吴岑.基于滑模自抗扰的PMLSM电流偏差解耦控制[J].光学精密工程,2022,30(04):431-441.

ZHAO Ximei,WU Cen.Current deviation decoupling control based on sliding mode active disturbance rejection for PMLSM[J].Optics and Precision Engineering,2022,30(04):431-441.
赵希梅,吴岑.基于滑模自抗扰的PMLSM电流偏差解耦控制[J].光学精密工程,2022,30(04):431-441. DOI： 10.37188/OPE.20223004.0431.

ZHAO Ximei,WU Cen.Current deviation decoupling control based on sliding mode active disturbance rejection for PMLSM[J].Optics and Precision Engineering,2022,30(04):431-441. DOI： 10.37188/OPE.20223004.0431.

摘要

针对永磁直线同步电动机（PMLSM）存在电流耦合以及在运行过程中易受参数变化的影响使系统鲁棒性降低，本文设计了一种基于滑模自抗扰的电流偏差解耦控制（SADRC-CDDC）方法。从参考电流与实际电流作差处引入两轴交叉耦合支路，建立含耦合项的电流控制方程，计算出耦合量并对系统进行补偿，设计电流偏差解耦控制器（CDDC），用于削弱

、

轴电流耦合量的影响。但是当电感参数发生变化时，并不能实现解耦，为此利用滑模自抗扰控制器（SADRC）解决参数变化对系统造成的扰动，并对系统进行补偿，进而实现近似完全解耦。从理论上分析证明该控制器的渐近稳定性，提高了系统的鲁棒性。通过系统实验，验证所设计的SADRC-CDDC方案的有效性，与CDDC相比，SADRC-CDDC在受到电流耦合、参数变化时，

轴电流最大振荡幅度减小了34.88%~54.76%，

轴电流最大振荡幅度减小了47.83%~71.43%，具有更强的鲁棒性。

Abstract

Current deviation decoupling control based on sliding mode active disturbance rejection （SADRC-CDDC） was designed for permanent magnet linear synchronous motors （PMLSMs）， which were affected by current decoupling and parameter variation. The d-q axis cross-coupled branch was introduced at the difference point between the reference and actual currents. The current deviation decoupling controller （CDDC） was then designed by establishing the current control dynamics with the coupling term and calculating the coupling term for system compensation， which weakened the influence of the d-q axis current coupling. However， the decoupling value cannot be eliminated when the value of inductance varies. Therefore， the sliding mode active disturbance rejection controller （SADRC） was used to solve the disturbance caused by the parameter variation and to compensate for the system； thus， the system can realize approximately complete decoupling. From the theoretical analysis， the controller satisfied asymptotic stability， and the robustness of the system was verified. The effectiveness of the designed SADRC-CDDC scheme was proved by the system experiment result. Compared with CDDC， SADRC-CDDC can achieve a more robust performance as the maximum oscillation amplitude of the d-axis current is reduced by 34.88%-54.76%， and the maximum oscillation amplitude of the q-axis current is reduced by 47.83%-71.43% when the system is affected by current coupling and parameter variation.

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references

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