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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2013, Vol. 34 ›› Issue (2): 401-408.doi: 10.7527/S1000-6893.2013.0046

• Electronics and Control • Previous Articles     Next Articles

A Fault Diagnosis Approach for Spacecraft Based on Hierarchical Transition System Model

JIN Yang, WANG Rixin, XU Minqiang   

  1. Deep Space Exploration Research Center, Harbin Institute of Technology, Harbin 150080, China
  • Received:2012-03-06 Revised:2012-05-25 Online:2013-02-25 Published:2012-06-07
  • Contact: 10.7527/S1000-6893.2013.0046 E-mail:wangrx@hit.edu.cn
  • Supported by:

    National Basic Research Program of China (2012CB720003)

Abstract:

In order to improve the low resolution of the diagnostic results caused by the poor completeness and low diagnostic efficiency of a traditional single-granularity transition system model when modeling a spacecraft autonomous fault diagnosis system, a multi-granularity transition system model is proposed. A hierarchical strategy is used to build such a model using multi-granularity diagnostic knowledge according to the granularity and the structure. An up-to-down recursive inference algorithm is proposed to detect the failure component, confirm the fault-mode and locate the fault candidate set by reducing the search space layer by layer. Meanwhile, a separation strategy for conflict recognition is used to reduce the amount of calculation. The telemetry and command subsystem of a certain spacecraft is modeled with this approach and the result of the simulation shows that the completeness of the model, the diagnostic resolution and the diagnostic efficiency are significantly improved.

Key words: fault diagnosis, transition system model, multi-granularity model, conflict candidate, recursive search, telemetry and command subsystem

CLC Number: