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城市公交故障抢修的随机Petri网建模及分析 被引量:3

Modeling and Analysis of Urban Public Transportation Fault Repair Based on Stochastic Petri Net
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摘要 针对城市公交运行过程中紧急抢修故障车的效率问题,本文基于随机Petri网建立了城市公交运行故障的抢修模型,利用随机Petri网与马尔可夫链的同构关系,得到了抢修模型稳定的状态空间及各状态出现的概率,进而分析了抢修过程各环节的利用率及各状态的时间属性,为抢修效率的提高提供了相关依据.实例验证模型分析的有效性,通过对某些抢修环节的改善和提高,进而提高公交故障抢修的效率. According to the efficiency of repairing imminently faulty bus in the city, this paper establish the model for the process of repairing the fault bus based on the Stochastic Petri nets(SPN). Since the Stochastic Petri nets and the Markov chain is isomorphic, the stable state space of the repairing model can be gain. Then the probability of each state will be calculated. The analysis for the utilization rate of the every repairing step and the time attributes of the every steady state can be given, These can provide the relevant evidence for improving the efficiency of repairs. At last an example is given to verify the availability of the modeling and analysis based on SPN. The efficiency of fault repair will be improved through enhancing the efficiency of some repairs step.
出处 《微电子学与计算机》 CSCD 北大核心 2012年第9期125-128,共4页 Microelectronics & Computer
基金 河南省重点科技攻关项目(122102210004) 湖南省"四千工程"(湘经信科技[2011]639号) 湖南省教育厅教学仿真实训软件开发项目(湘教通[2011]78号) 湖南省教育厅科学研究项目(11C0936)
关键词 随机PETRI网 故障抢修 城市公交 马尔可夫链 stochastic Petri nets fault repair urban public transportation Markov chain
作者简介 张四平 男,(1979-),学士,讲师.研究方向为软件工程、Petri网理论 佘维 男,(1977-),副教授,博士研究生.研究方向为Petri网理论、智能系统 王梅 女,(1978-),讲师,硕士生.研究方向为软件工程
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