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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2022, Vol. 43 ›› Issue (8): 325884.doi: 10.7527/S1000-6893.2021.25884

• Electronics and Electrical Engineering and Control • Previous Articles     Next Articles

Decoupling control strategy of position loop for vibration damping electric actuator

HAO Zhenyang, WANG Tao, CAO Xin, ZHU Tao   

  1. College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
  • Received:2021-05-31 Revised:2021-07-21 Online:2022-08-15 Published:2021-07-20
  • Supported by:
    National Natural Science Foundation of China (52077100);Aeronautical Science Foundation of China (201958052001)

Abstract: The anti-vibration electric actuator adopts the form of four motors independently driving four eccentric masses to achieve vibration reduction, and the traditional parallel control strategy will cause poor control effect due to strong coupling at the output end of the system. In response to the above problems, this article first established a mathematical model of the actuator output force, and proposed a decoupling control strategy of the position loop for the vibration-absorbing electric actuator. The generalized frequency method and the dominant pole method are both used in the parameter design of the control system. Then, the dynamic performance of the system is analyzed, and the stability margin of the decoupling control system is calculated by the stability margin measurement methods such as the hysteresis matrix singular value method. The results show that the system designed in this paper has good dynamic characteristics and robustness. Finally, the principle prototype is developed. The experiment verifies the effectiveness of the control strategy and the rationality of the parameter design.

Key words: vibration damping electric actuator, decoupling control, dominant pole method, generalized frequency method, return difference matrix singular value method

CLC Number: