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Modeling imperfectly repaired system data via grey differential equations with unequal-gapped times

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  • Guo, Renkuan

Abstract

In this paper, we argue that grey differential equation models are useful in repairable system modeling. The arguments starts with the review on GM(1,1) model with equal- and unequal-spaced stopping time sequence. In terms of two-stage GM(1,1) filtering, system stopping time can be partitioned into system intrinsic function and repair effect. Furthermore, we propose an approach to use grey differential equation to specify a semi-statistical membership function for system intrinsic function times. Also, we engage an effort to use GM(1,N) model to model system stopping times and the associated operating covariates and propose an unequal-gapped GM(1,N) model for such analysis. Finally, we investigate the GM(1,1)-embed systematic grey equation system modeling of imperfectly repaired system operating data. Practical examples are given in step-by-step manner to illustrate the grey differential equation modeling of repairable system data.

Suggested Citation

  • Guo, Renkuan, 2007. "Modeling imperfectly repaired system data via grey differential equations with unequal-gapped times," Reliability Engineering and System Safety, Elsevier, vol. 92(3), pages 378-391.
    • Handle: RePEc:eee:reensy:v:92:y:2007:i:3:p:378-391
    DOI: 10.1016/j.ress.2006.04.009
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    References listed on IDEAS

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    1. Huang, Yeu-Shiang & Chang, Chi-Chang, 2004. "A study of defuzzification with experts' knowledge for deteriorating repairable systems," European Journal of Operational Research, Elsevier, vol. 157(3), pages 658-670, September.
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