A Method and Its Application for the Modeling and Simulation of the Operational Reliability Characteristics and Costs of Technical Systems

摘要

Thepresentedcomprehensivemethodisabletomodelandanalyzetheoperationalreliabilitycharacteristicsandtheoperationalcostsofatechnicalsystem.Itenablestointegrateallrelevantaspectsrelatedtosystemreliability,maintenanceandlogisticsaswellasdependenciesbetweenthemintooneconjointsystemmodelusinganextendedcoloredstochasticPetrinetandareliabilityblockdiagram.Thesemainmodelingaspectscover:Reliabilitystructure,componentswithseveraloperationalstatesandgeneraldistributedfailuretimes,failuredependencies,maintenancestrategy,resourcesanddependencies,logistics,queuingaspectsandoperationalcosts.TheanalysismethodforthesystemmodelwhichisbasedontheMonte-Carlosimulationisimplementedinthedevelopment-andsimulation-environment“PetriSim”whichisintroducedinthispaperandappliedtoanexemplarysystem.Inthiscasestudytheinterdependenciesinsideaproductionlinerelatedtoreliability,maintenanceandlogisticsareconsideredandtheireffectsontheoperationalavailabilityandcostsareinvestigated.Anoptimalmaintenancestrategyisdeterminedandaninvestmentdecisioncanbesupported.