Research on imperfect condition-based maintenance strategy based on accelerated degradation process

IF 1.3 4区 计算机科学 Q4 AUTOMATION & CONTROL SYSTEMS
Jintao Chen, Lina Ren, Jianhua Li
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引用次数: 0

Abstract

To address the situation that the degraded system cannot be repaired as new and the degradation is accelerated after repair in engineering practice, an imperfect condition-based maintenance model is proposed based on the Gamma process by introducing the maintenance improvement factor and the accelerated degradation factor. The maintenance improvement factor describes the recovery degree of the degradation amount after imperfect maintenance, then gives a quantitative representation method of the system maintenance improvement effect and the determination method of the maximum number of imperfect maintenance. The accelerated degradation factor is combined with the geometric process to describe the accelerated degradation process of the system after imperfect maintenance. The Monte Carlo method is used to determine the optimal number of imperfect preventive maintenance decisions. Through the demonstration of calculation examples, the influence of accelerated degradation factor and maintenance improvement factor on the long-term operation maintenance rate and the optimal number of imperfect maintenance is analyzed. The results show that the model can more comprehensively describe the degradation and maintenance process of degraded systems, and it can effectively reduce maintenance cost ratio under long-term operation. It provides a certain theoretical support for formulating an economical and reasonable maintenance strategy that is more in line with the actual degradation and maintenance process in engineering practice.
基于加速退化过程的不完全状态维修策略研究
针对工程实践中退化系统不能如新修复、修复后退化加速的情况,通过引入维修改善因子和加速退化因子,提出了一种基于Gamma过程的不完善状态维修模型。维修改善因子描述了不完善维修后退化量的恢复程度,给出了系统维修改善效果的定量表示方法和最大不完善维修次数的确定方法。将加速退化因子与几何过程相结合,描述了系统在不完全维护后的加速退化过程。采用蒙特卡罗方法确定不完善预防性维修决策的最优数量。通过算例论证,分析了加速退化因子和维修改进因子对长期运行维修率和不完善维修次数的影响。结果表明,该模型能较全面地描述退化系统的退化和维护过程,能有效降低长期运行下的维护成本比。为在工程实践中制定更符合实际退化维修过程的经济合理的维修策略提供了一定的理论支持。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Measurement & Control
Measurement & Control 工程技术-仪器仪表
自引率
10.00%
发文量
164
审稿时长
>12 weeks
期刊介绍: Measurement and Control publishes peer-reviewed practical and technical research and news pieces from both the science and engineering industry and academia. Whilst focusing more broadly on topics of relevance for practitioners in instrumentation and control, the journal also includes updates on both product and business announcements and information on technical advances.
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