关键词: 运筹学 , 停机时间 , 非计划维修 , 模型 , Petri网

Abstract: Based on the analysis of equipment unscheduled maintenance process, the elements of un?scheduled maintenance downtime and its influence factors on the downtime were analyzed. A multi?type tasks concurrent maintenance model was constructed based on colored Petri net, wmch reflects the maintenance resource dynamic combination and dynamic variation of the server number.Combined with task generation model, the equipment unscheduled maintenance downtime was analyzed. At last, an example was studied.

Key words: operational researcn , downtime , unscheduled maintenance , model , Petri net