Aerospace Contrd and Application ›› 2020, Vol. 46 ›› Issue (2): 64-71.

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Small Satellite Quality Characteristics Adjustment Based on Improved Firefly Algorithm#br#
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Small Satellite Quality Characteristics Adjustment Based on Improved Firefly Algorithm#br#

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  1. 1.Changchun Institute of Optics, Fine Mechanics&Physics, Chinese Academy of Sciences, Changchun 130033, China;2.University of Chinese Academy of Sciences, Beijing 100039, China.

  • Online:2020-04-25 Published:2020-05-21
  • Supported by:
     Jilin Province Natural Science Foudation (2018C18076),and Jilin Province Excellent Young Talent Fund(20180520216JH).

Abstract:

Abstract: In order to eliminate the influence of mass characteristics changes during the onorbit operation of small satellites, an onorbit centroid adjustment method based on improved firefly algorithm is proposed. The algorithm optimizes the parameter tuning of the PID controller and introduces an adaptive step factor lifting algorithm to improve the search performance. The algorithm is programmed into onboard computer, and the motor adjusting mechanism is controlled to adjust the centroid in orbit. Based on the airfloating platform built on the ground, the simulation results show that the improved algorithm can complete PID parameters tuning in the 48th iteration and has higher realtime and faster convergence speed and dynamic response characteristics than other algorithms. The system can reduce the centroid offset to the requirement within 59s. It verifies the system’s realtime performance and stability in the quality characteristics adjustment of small satellites.

Key words: Keywords: quality characteristics, onorbit centroid adjustment, firefly algorithm, motor adjustment mechanism, airfloating platform

CLC Number: 

  • V448.22