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Chinese Journal of Space Science ›› 2019, Vol. 39 ›› Issue (3): 388-398.doi: 10.11728/cjss2019.03.388

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Life Prediction and Analysis of Momentum Wheel Based on Wiener Process Degradation Modelingormalsize

XU Jingbo1,2, TAN Xueqian1,2, WU Zhen1,2, SUN Danfeng1,2, JIANG Ningxiang1,2, SUN Dan1,2   

  1. 1. Shanghai Aerospace Control Technology Institute, Shanghai 201109;
    2. Shanghai Engineering Research Center of Inertia, Shanghai 201109
  • Received:2018-04-20 Revised:2018-10-10 Online:2019-05-15 Published:2019-06-01

Abstract:

Momentum wheel as a key actuator for satellites, its reliability and life span directly affect the success or failure of satellite missions in orbit. For the life prediction and analysis of momentum wheel products, due to the limited number of samples, long test cycle and high cost, it is impossible to obtain enough life sample data. Therefore, combined with engineering experience and existing ground life test data, the Wiener process degradation model is used to model the reliability of the momentum wheel product, and its life expectancy is estimated and analyzed. The results show that this model provides an effective method for predicting the life of a momentum wheel and is suitable for life prediction and analysis of high reliability, long life products.

Key words: Momentum wheel, Wiener process, Degradation modeling, Reliability, Life prediction

CLC Number: