• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2026, Vol. 62 ›› Issue (13): 155-165.doi: 10.3901/JME.260304

• 机械动力学 • 上一篇    下一篇

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考虑寿命预测误差的机械装备维护决策方法研究

雷亚国1, 陈泽训1, 杨彬1, 武通海1, 孔德同2   

  1. 1. 西安交通大学现代设计及转子轴承系统教育部重点实验室 西安 710049;
    2. 华电电力科学研究院有限公司 杭州 310030
  • 收稿日期:2025-07-07 修回日期:2025-12-05 发布日期:2026-08-28
  • 作者简介:雷亚国,男,1979年出生,教授,博士研究生导师。主要研究方向为智能故障诊断与寿命预测、机械装备运行维护决策优化。E-mail:yaguolei@mail.xjtu.edu.cn;杨彬(通信作者),男,1992年出生,助理教授,硕士研究生导师。主要研究方向为高端装备大数据智能运维。E-mail:binyang@xjtu.edu.cn
  • 基金资助:
    教育部基础学科和交叉学科突破计划、国家自然科学基金(52435003,52305129)和中央高校基本科研业务费专项资金资助项目。

Research on Maintenance Decision-making Method of Machinery Considering Life Prediction Error

LEI Yaguo1, CHEN Zexun1, YANG Bin1, WU Tonghai1, KONG Detong2   

  1. 1. Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi'an Jiaotong University, Xi'an 710049;
    2. Huadian Electric Power Research Institute Co., Ltd., Hangzhou 310030
  • Received:2025-07-07 Revised:2025-12-05 Published:2026-08-28

摘要: 预测性维护能够依据机械装备的健康状态退化趋势或剩余寿命等指标合理制定维护计划,为装备维护选择最佳时机,从而保障装备运行安全性并降低装备维护成本。然而,工程实际中预测性维护决策模型的性能依赖于寿命预测方法的精度,剩余寿命预测值偏大或者偏小都会使得装备运维错过最佳维护时机,严重制约维护决策模型的工程应用效果。因此,如何降低预测误差对维护策略的负面影响,成为机械装备智能运维领域中亟待解决的关键问题。考虑到真实剩余寿命显著影响寿命预测误差,本文提出了一种考虑寿命预测误差的非周期维护策略。首先对寿命预测误差进行建模,建立预测误差分布与真实剩余寿命之间的动态映射关系;然后将预测误差的影响分类为适时维护、意外维护和过早维护三种决策结果,并计算每种决策结果的维护成本;最后基于装备寿命分布构建非周期维护模型来生成非周期维护计划,并基于维护计划计算综合维护成本率,形成非周期维护决策模型。通过机床铣刀维护的案例对提出策略进行验证,结果表明提出方法能够在考虑预测误差的基础上合理安排检测计划,有效降低铣刀的维护成本。

关键词: 机械装备, 维护决策, 寿命预测误差, 非周期维护

Abstract: Predictive maintenance can be based on the health state degradation trends of the machinery or the remaining life of the machinery and other indicators to rationally develop the maintenance plan, to select optimal time for machinery maintenance, so as to ensure the reliability of the machinery and reduce the maintenance costs. However, in engineering practice, the performance of the predictive maintenance decision-making model heavily relies on the accuracy of the life prediction methods. Both overestimated and underestimated remaining life may cause the machinery operation and maintenance to miss the optimal time for maintenance, and severely restrict the engineering application effect of the maintenance decision-making model. Therefore, how to mitigate the negative impact of prediction errors on maintenance strategies has become a critical issue that urgently needs to be addressed in the field of intelligent maintenance for machinery. Considering the significant impact of real remaining useful life on life prediction errors, this paper proposes a non-periodic maintenance strategy considering life prediction errors. Firstly, a dynamic relationship between prediction error distribution and real remaining life is established through error modeling. Subsequently, the impacts of prediction errors are categorized into three decision outcomes - timely maintenance, unexpected maintenance and premature maintenance, with corresponding maintenance costs calculated for each scenario. Finally, a non-periodic maintenance model is developed based on machinery life distribution to generate maintenance schedules, with the integrated maintenance cost rate calculated accordingly, forming a non-periodic maintenance decision-making framework. The proposed strategy is validated through a case study on machine tool milling cutter maintenance. Results demonstrate that the methodology can effectively arrange inspection plans while considering prediction errors, achieving significant maintenance cost reduction.

Key words: machinery, maintenance decision, life prediction error, non-periodic maintenance

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