Systems Engineering and Electronics ›› 2020, Vol. 42 ›› Issue (3): 613-619.doi: 10.3969/j.issn.1001-506X.2020.03.015

Previous Articles     Next Articles

Optimization of condition-based maintenance strategy for single-unit accelerated degrading systems

Chuang CHEN1,2(), Ningyun LU1,2(), Bin JIANG1,2(), Yin XING3()   

  1. 1. College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
    2. Jiangsu Key Laboratory of Internet of Things and Control Technologies, Nanjing University of Aeronautics andAstronautics, Nanjing 211106, China
    3. School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China
  • Received:2019-03-11 Online:2020-03-01 Published:2020-02-28
  • Supported by:
    国家自然科学基金(61873122);江苏高校优势学科建设工程

Abstract:

Optimization of condition-based maintenance strategy is studied for single-unit accelerated degrading systems, to minimize the average maintenance cost rate, by setting the optimal inspection interval and the near-to-failure threshold. To handle the sparse maintenance data, the grey model theory is used to establish the accelerated degrading model of the system, as it is suitable for small-sample modeling. Considering that there exist multiple correlations among the number of previous repairs, the degradation state and the maintenance duration, the partial least square is used to establish a multivariable regression model. Then, the objective function based on average maintenance cost rate is given, and the improved grey wolf optimization method solves the optimal decision variables. Finally, a numerical example is given to illustrate the feasibility of the proposed optimization method of condition-based maintenance strategy.

Key words: condition-based maintenance, strategy optimization, accelerated degrading system, grey model, partial least square, grey wolf optimization algorithm

CLC Number: 

[an error occurred while processing this directive]