Enhancement of Solar Array Drive Assembly System Stability through Linear Active Disturbance Rejection Control

Author:

Wang Jianyuan12ORCID,Gan Shiyue12,Chen Jinbao12,Wang Jian12ORCID,Hu Zhuochen12

Affiliation:

1. College of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China

2. National Key Laboratory of Aerospace Mechanism, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China

Abstract

To improve the Solar Array Drive Assembly (SADA) system, a servo control method known as Linear Active Disturbance Rejection Control (LADRC) is introduced, utilizing a speed loop for a Permanent Magnet Synchronous Motor (PMSM). This method serves as an alternative to the conventional proportional–integral (PI) controller, which exhibits a limited stability margin. The use of the LADRC controller leads to decreased overshoot and enhances the system’s robustness against disturbances. First, the mathematical representation of the PMSM alongside the dynamic model of the solar wing is established. Following that, the application of the Lyapunov stability theory is employed to illustrate the stability of the drive system utilizing LADRC, thereby validating the stability of the SADA. Lastly, simulation experiments are performed using the MATLAB2021a/Simulink digital environment. The simulation results under various operational conditions indicate the significant improvement in stability compared to the PI controller, achieving the stability level of 9.603×10−5, demonstrates enhanced performance in terms of speed and resistance to disturbances.

Funder

Ministry of Science and Technology of China

Shanghai Aerospace Science and Technology Innovation Fund

Publisher

MDPI AG

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