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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2014, Vol. 35 ›› Issue (6): 1673-1683.doi: 10.7527/S1000-6893.2013.0482

• Electronics and Control • Previous Articles     Next Articles

Equal Life Design Method of Operationally Responsive On-board Electronic Systems

LIU Yuan, SHEN Yi, XING Lei, SUN Zhaowei   

  1. School of Astronautics, Harbin Institute of Technology, Harbin 150001, China
  • Received:2013-09-03 Revised:2013-11-30 Online:2014-06-25 Published:2013-12-10
  • Supported by:

    National Natural Science Foundation of China (11002040, 61273096)

Abstract:

Unlike traditional satellites, an operationally responsive satellite has fine timelines. The traditional satellite design flow which assigned components reliability according to their importance can not minimize overall cost. Therefore, the concept of equal life design derived from the field of industrial design is introduced in this paper. It chooses and assembles an onboard electronic system based on its predesigned task period, trying to make the system cost vary in proportion with the satellite's designed life. Then, the paper proposes a satellite electronic system equal life optimization algorithm which can optimize the reliability mean square deviation and cost of onboard electronic components based on a nonlinear mixed integer programming model. Furthermore, considering the system volume, weight and reliability constraints, the normalized satisfaction function, Pareto share function and genetic operators are also designed to improve the algorithm's optimization efficiency. The simulation result shows good convergence and stability of the algorithm, it can not only eliminate a system reliability weak link at the component level, but also effectively reduce cost.

Key words: operationally responsive, satellite, electronic system, reliability, genetic algorithm

CLC Number: