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Modeling And Analysis Of Maintenance Support Capability Assessment Of Equipments In The Usage Phase

Posted on:2005-06-27Degree:DoctorType:Dissertation
Country:ChinaCandidate:T ZhangFull Text:PDF
GTID:1102360155471931Subject:Management Science and Engineering
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The combat efficiency of equipments depends on maintenance support capability of equipments in the usage phase. Modern war has more and more demands on the maintenance support of equipments. Based on the analysis of the characteristic of the mission requirement of peacetime and wartime, this thesis gives the indexes of maintenance support capability assessment of equipments in the usage phase, gives the models and corresponding algorithms for calculating operational availability and probability of success in mission, and a software system of maintenance support capability assessment of equipments in the usage phase is also presented in the end. The main contents and fruits of this thesis are outlined as follows:(1) On the basis of analyzing the relationship of equipments, combat units, missions and maintenance support system, the indexes of maintenance support capability assessment of equipments in the usage phase is advanced, which is formed from two sides: the supported objects and maintenance support system.(2) To access the operational availability that is more important in the peacetime, we put forward the operational availability model for k-out-of-N system under m maintenance policy and its corresponding algorithm. Then we advance a new condition based maintenance strategy —(m,N_G) maintenance policy. By the way, we give the operational availability model for k-out-of-N system under (m,N_G) maintenance policy and its corresponding algorithm. The relations between the initial number of spares and m, N_G in (m,N_G) maintenance policy are given on the basis of analysis of an example.(3) To access the probability of success in mission that is more important in the wartime, we give the algorithm for calculating the probability of success in mission when a series-wound system composed with same components or a series-wound system composed with different components implements a single phase mission. Under the minimal spare replacement maintenance policy, we give and prove the formula for calculating the probability of system state transition given limited maintenance support resources. And on the basis of this formula, the algorithm for calculating the probability of success in mission when a system with various configurations implements a single phase mission is given. We also give the algorithm for calculating the probability of success in mission when a k-out-of-N System implements a phased-mission with different k in different phases and when a system with various configurations implements a phased-mission with different configurations in different phases. A BDD-based algorithm for phased-mission on some assumptions is given.(4) We advance a multi-level PERT-Petri net model which can be used in modeling andanalysis of maintenance support process and give its semantic definition and recursive simulation algorithm. On the basis of GOOPN and HOONet, we give a new high level Petri net — aspect-oriented Petri net (AOPN) and its semantic definition and behavioral semantics. The process and method of AOPN-based modeling and analysis of maintenance support capability assessment of equipments in the usage phase are given.(5) We design and develop a software system of maintenance support capability assessment of equipments in the usage phase. The function systematic structure of this system and some key techniques in development are given. To use this system in distributed environment, a Web Services-based system integrated running environment is advanced.
Keywords/Search Tags:Maintenance support capability, Operational availability, Phased mission, Probability of success in mission, Petri net, Aspect-oriented
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