基于能源效率的生产系统节能延迟窗机会维修模型

Energy Saving Delay Window Opportunity Maintenance Strategy of Production System Based on Energy Efficiency

将系统有效产出与能源消耗结合起来,提出了能源效率指标(energy efficiency indicator,EEI),构建了联合维修模型。以多设备串联系统为研究对象,令各设备退化服从Tweedie指数散布过程,考虑了生产过程中的产出损失,用基于节能延迟窗口的机会维修策略,令传统时间窗中最早到达最优维修时刻决策点成为维修组合窗决策点,以最小化系统在规划期内的能源效率(energy efficiency,EE)为目标构建机会维修模型。最后通过蒙特卡洛仿真实验进行算例分析,结果表明在减少系统总能源消耗和提高系统有效产出方面,该机会维修模型切实可行。

Combined with the effective output of the system and the energy consumption,the energy efficiency indicator(EEI)was put forward.Taking the multimachine series system as the research object,the machines’degradation was subjected to the Tweedie exponential-dispersion process.By considering the output loss in production,and using the opportunity maintenance strategy based on the energy-saving delay time window,the decision point of the earliest optimal maintenance moment changed to the decision point of the maintenance combination window.Opportunity maintenance models were built with the goal of minimizing the energy efficiency(EE)of the system during the planning period.Finally,an example analysis was carried out by MonteCarlo simulation experiment.Results showed that the opportunity maintenance model was feasible in reducing the total energy consumption and increasing the effective output of the system.