Vibration suppression of cable net antenna based on repetitive active disturbance rejection control

doi:10.16708/j.cnki.1000-758X.2023.0011

Abstract

Abstract: In order to solve the problem of vibration suppression of cable net space antenna，an active vibration control method based on active disturbance rejection repetitive compound controller was proposed.At first，the vibration dynamic model of antenna surface was established by using finite element method.The model order was reduced based on modal truncation method.Then，based on the energy minimization criterion，the position of sensor/actuator was optimized by using genetic algorithm.Finally，the active suppression algorithm of antenna surface vibration based on linear active disturbance rejection control was designed，and the feedforward repetitive control algorithm was designed to improve the ability of the controller to suppress periodic disturbance by learning the periodic error of feedback control.The simulation results show that the proposed control method can reduce the profile disturbance by 97.0%，and the control effect is better than PID controller.The designed control method provides a new technical approach for the vibration control of antenna mesh surface.

Key words: antenna mesh surface, genetic algorithm, linear active disturbance rejection control（LADRC）, repetitive control, active vibration suppression

DONG Yutong, WANG Wenhao, MA Xiaofei, LIU Lei. Vibration suppression of cable net antenna based on repetitive active disturbance rejection control[J]. Chinese Space Science and Technology, 2023, 43(1): 109-118.

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URL: http://journal26.magtechjournal.com/kjkxjs/EN/10.16708/j.cnki.1000-758X.2023.0011

http://journal26.magtechjournal.com/kjkxjs/EN/Y2023/V43/I1/109

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Vibration suppression of cable net antenna based on repetitive active disturbance rejection control

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