如何在任务间隔的有限维修资源约束下,开展系统的选择性维修优化,以保证系统以最大成功概率满足下一次任务的性能需求,是维修人员关心的重要问题。首先,以多态串并联系统为研究对象,提出了不完美维修下部件不同维修水平的有效役龄模型;...如何在任务间隔的有限维修资源约束下,开展系统的选择性维修优化,以保证系统以最大成功概率满足下一次任务的性能需求,是维修人员关心的重要问题。首先,以多态串并联系统为研究对象,提出了不完美维修下部件不同维修水平的有效役龄模型;其次,考虑任务间隔中部件之间拆装顺序对维修资源的影响,建立了考虑结构依赖的系统维修时间与维修成本模型;最后,考虑任务间隔和维修成本的约束,以系统成功完成下次任务概率最大为目标,建立了考虑结构依赖的选择性维修优化模型,并以城市空中交通(urbar air mobility,UAM)空中汽车混合动力传动系统为案例,验证了所提方法的有效性。展开更多
The availability equivalence of different designs for a repairable multi-state series-parallel system(RMSPS) is discussed in this paper.The system components are assumed to be independent,and their failure and repair ...The availability equivalence of different designs for a repairable multi-state series-parallel system(RMSPS) is discussed in this paper.The system components are assumed to be independent,and their failure and repair rates to be constant.The system availability is defined as the ability of the system to satisfy consumer demand.Factor improvement method and standby redundancy method are used to improve the system design.To evaluate availability of the both original and improved systems,a fast technique,based on universal generating function,is adopted.The availability equivalence factor is introduced to compare different system designs.Two types of availability equivalence factors of the system are derived.A numerical example is provided to illustrate how to utilize the obtained results.展开更多
文摘如何在任务间隔的有限维修资源约束下,开展系统的选择性维修优化,以保证系统以最大成功概率满足下一次任务的性能需求,是维修人员关心的重要问题。首先,以多态串并联系统为研究对象,提出了不完美维修下部件不同维修水平的有效役龄模型;其次,考虑任务间隔中部件之间拆装顺序对维修资源的影响,建立了考虑结构依赖的系统维修时间与维修成本模型;最后,考虑任务间隔和维修成本的约束,以系统成功完成下次任务概率最大为目标,建立了考虑结构依赖的选择性维修优化模型,并以城市空中交通(urbar air mobility,UAM)空中汽车混合动力传动系统为案例,验证了所提方法的有效性。
基金supported in part by the Natural Science Foundation of Hebei Province under Grant Nos.A2014203096 and G2012203136the National Natural Science Foundation of China under Grant No.11201408the Science Research Project of Yanshan University under Grant No.13LGA017
文摘The availability equivalence of different designs for a repairable multi-state series-parallel system(RMSPS) is discussed in this paper.The system components are assumed to be independent,and their failure and repair rates to be constant.The system availability is defined as the ability of the system to satisfy consumer demand.Factor improvement method and standby redundancy method are used to improve the system design.To evaluate availability of the both original and improved systems,a fast technique,based on universal generating function,is adopted.The availability equivalence factor is introduced to compare different system designs.Two types of availability equivalence factors of the system are derived.A numerical example is provided to illustrate how to utilize the obtained results.
