Journal of Systems Engineering and Electronics ›› 2009, Vol. 31 ›› Issue (4): 851-854.

• 系统工程 • 上一篇    下一篇

动态运行环境下退化系统最佳检测周期的确定

方华元, 胡昌华, 马清亮   

  1. 第二炮兵工程学院自动化系, 陕西, 西安, 710025
  • 收稿日期:2007-10-22 修回日期:2008-08-13 出版日期:2009-04-20 发布日期:2010-01-03
  • 作者简介:方华元(1980- ),男,硕士,讲师,主要研究方向为复杂系统可靠性,维修性与安全性分析.控制系统故障诊断与故障预测.E-mail:fhyflying@sina.com
  • 基金资助:
    国家自然科学基金重点项目(60736026);教育部新世纪优秀人才支持计划资助课题

Determination of optimal inspection period for degradation system operating in dynamic environment

FANG Hua-yuan, HU Chang-hua, MA Qing-liang   

  1. Dept. of Automation, Second Artillery Engineering Coll., Xi’an 710025, China
  • Received:2007-10-22 Revised:2008-08-13 Online:2009-04-20 Published:2010-01-03

摘要: 研究了运行在动态随机环境下退化系统的最佳检测周期。系统的运行环境用时间连续状态离散的马尔可夫过程描述,系统受磨损和冲击复合损伤下逐渐退化。以系统稳态平均可用度作为维修策略优化目标,寿命周期单位时间费用预算为约束条件,建立了一个关于检测周期的非线性规划模型,用遗传算法实现了检测周期的优化。最后通过算例验证了该模型和算法的可行性。

Abstract: The optimal inspection period for a degradation system subject to compound damages is investigated.The operational dynamic environment of the system is modeled as a continuous time discrete state Markov process,the system degrades gradually on conditions of continuous wear and discrete shocks damages.In order to compute an optimal inspection period and corresponding limiting average availability,a nonlinear programming model is formulated.The inspection period is optimized by genetic algorithms.In the end,the feasibility of the model and algorithm is verified through a numerical example.

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