执行模拟的步骤

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1、Chapter5:執行模擬的步驟授課老師：劉天倫老師執行模擬的程序步驟一：建立模擬目標及限制步驟二：蒐集分析系統資料數據步驟三：建構正確的模型步驟四：施行模擬實驗步驟五：呈現結果文件確立模擬目標CommonobjectivesPerformanceanalysisFeasibilitystudyCapacityanalysisComparisonstudySensitivityanalysisOptimizationDecision/responseanalysisConstraint(bottleneck

2、)analysisCommunication資料收集與分析(1)Guidelines1.IdentifydatarequirementsGoal-oriented:acquireanunderstandingofsystemoperationSteps:requiredscopeofthemodellevelofdetailquickdeterminationonrelevantfactorsidentificationofdecisionvariables(input)essenceofthesystem

3、(what’shappening,nothowthingshappen)Identifycause-and-effectrelationshipsscheduledeventsvs.conditionalevents(unpredictable)e.g.downtime:failure,toolchange,unavailabilityofstock,etc.資料收集與分析(2)2.UseasystematicapproachGeneralinformation,thenspecificinformatio

4、nasprogressed.Steps:defineentityflow(flowdiagram)definehowentitiesmoveandwhatresourceuseddeterminethevaluestouseQuestionnaire3.UseappropriatesourcesProcessplansTimestudiesFlowchartsFacilitylayoutsPersonalinterviewsFacilitywalk-throughs資料收集與分析(3)4.Prepareal

5、istofassumptionsUnavailableorunreliabledataLittleornoimpactonperformanceBestcase,mostlikelycaseorworstcase5.ConvertdataintoausefulformDatafittingtheoreticaldistributionEmpiricaldistribution(user-defined)Tabulatefrequencydistributions(Table5.1)6.Document,r

6、eview,andapprovedataWrittensummaryFlowdiagram建構正確有用的模型Modelfidelity:Degreetosystem’sdetailsandaccuracyNomorethanminimumrequiredfidelity(Figure5.2)ModellifecycleModelpartitioningProgressiverefinementModelverification(debugging)Modelvalidationrepresentationa

7、lvaliditytotherealsystem施行模擬實驗ExpectedperformanceOptimumvalueforadecisionvariableOptimumcombinationofvaluesSensitivityofvariablechangesAlternativesystemcomparison呈現結果文件MakerecommendationsoperationalaspectsofthesystemPresentationAnimationOutputcharts