• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2020, Vol. 56 ›› Issue (21): 231-240.doi: 10.3901/JME.2020.21.231

• 数字化设计与制造 • 上一篇    

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自动化生产线中关键设备的预维护策略研究

沈南燕1,2, 武星1,2, 李静1,2, 苏琨1,2, 祝更生1,2   

  1. 1. 上海大学机电工程与自动化学院 上海 200444;
    2. 上海大学上海市智能制造及机器人重点实验室 上海 200444
  • 收稿日期:2019-11-25 修回日期:2020-03-19 出版日期:2020-11-05 发布日期:2020-12-19
  • 作者简介:沈南燕,女,1982年出生,博士,副教授,博士研究生导师。主要研究方向为智能制造与机器人技术。E-mail:shny@shu.edu.cn;李静(通信作者),女,1982年出生,博士,副教授,博士研究生导师。主要研究方向为先进制造装备及磨削技术。E-mail:ian1982@shu.edu.cn
  • 基金资助:
    国家科技重大专项资助项目(2016ZX04004003)。

Research on Pre-maintenance Strategy of Key Equipment in Automatic Production Line

SHEN Nanyan1,2, WU Xing1,2, LI Jing1,2, SU Kun1,2, ZHU Gengsheng1,2   

  1. 1. School of Mechanical and Electrical Engineering and Automation, Shanghai University, Shanghai 200444;
    2. Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, Shanghai University, Shanghai 200444
  • Received:2019-11-25 Revised:2020-03-19 Online:2020-11-05 Published:2020-12-19

摘要: 为了避免由于设备故障导致的生产线停产,首先研究生产线故障维修成本、预防性维护成本和停产损失的计算方法,建立生产线平均可靠度与维护总成本多目标优化模型,从而获得了最优的生产线周期性维护计划。针对关键设备,如数控机床、工业机器人,运行状态突然严重劣化的情况,基于时间延迟理论得到了关键设备子系统可靠度随时间变化的规律,根据设备运行状态的监测数据,采用支持向量机模型对设备子系统潜在故障的发生概率进行预测。由此建立了关键设备延迟维护最佳时刻优化模型,并通过粒子群优化算法求解关键设备的最佳维护时刻。最后,通过实例仿真分析验证了文本预维护策略的有效性,能够在保证可靠度要求的同时,有效降低维护成本。

关键词: 生产线可靠度, 维护成本, 多目标优化, 时间延迟理论, 设备状态监测

Abstract: In order to avoid the shutdown of production line caused by equipment failures, the optimal periodic maintenance plan is firstly obtained by solving a multi-objective optimization model of average reliability and total maintenance cost of the entire production line where the costs of downtime, breakdown repair and preventive maintenance are accurately evaluated based on equipment reliability. For the sudden and severe deterioration of key equipment, such as CNC machine tool and industrial robot, time delay theory is utilized to formulate subsystem reliability of key equipment and then the potential failure probability of equipment subsystem is predicted by using Support Vector Machine according to monitoring data on equipment operating status. And thus, the optimization model of delayed maintenance time of key equipment is established and solved by particle swarm optimization to search for the optimal maintenance time of key equipment. The case study conducted by simulation analysis shows the effectiveness of the proposed pre-maintenance strategy which can ensure the reliability and minimize maintenance cost of production line.

Key words: reliability of production line, maintenance cost, multi-objective optimization, time delay theory, equipment condition monitoring

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