QFD-理论案例

QualityFunctionDeployment QFDforSoftwareRequirementsManagement GuyDavisCarmenZannierAdamGeras 2of46 Objectives Uponcompletionofthischapter studentswill UnderstandwhatQualityFunctionDeployment QFD isUnderstandhowQFDcomparestoothersoftwaredevelopmentlifecyclesBeabletoidentifytheprimaryQFDtoolsandconceptsBeabletoidentifytheQFDpracticesthatmightbeusefulinnon QFDworkingenvironments 3of46 1 IntroductiontoQFD 4of46 1 a QFD Definition 5of46 1 a QFD Definition Cont ASI 2000 6of46 1 b QFD Benefits ASI 2000 7of46 1 c QFD History 8of46 1 d SoftwareEngineeringContext 9of46 1 e RequirementsEngineeringContext 10of46 2 QFDLifeCycleConsiderations QFDProcessSQFDProcess 11of46 2 a TraditionalQFDPhases 12of46 2 b AdaptingQFDtoSoftware 13of46 2 b SQFDProcess 14of46 3 TheHouseofQuality 15of46 3 a CustomerRequirements 16of46 3 b AffinityandTreeDiagrams 17of46 Exercise1 AffinityWorkshop 18of46 3 c ThePlanningMatrix QuantifiesCustomerRequirements QuantifiesPerceptionsofExistingProducts Allowsadjustmentbasedondesignteam 19of46 CustomerSatisfaction existingproductsfulfillingspecifiedrequirements ImprovementRatio PlannedPerformance ExistingPerformanceSalesPoint weightformarketabilityOverallWeighting ImportanceWeightingxImprovementRatioXSalesPoint 3 c ThePlanningMatrix 20of46 3 c ThePlanningMatrix 21of46 3 d TechnicalRequirements EngineeringCharacteristics VoiceoftheCompany IdentifyMeasurableCharacteristicsrelatedtoCustomerRequirements Directionofchangeincludedtoleadtoimprovementofproductperformance 22of46 CriticalQuestion HowsignificantistechnicalrequirementAinsatisfyingcustomerrequirementB 3 e Interrelationships BetweencustomerrequirementsandtechnicalrequirementsTranslationandcorrelationstepCriticaltogenerateconsensusbetweendevelopmentteamandcustomers 23of46 3 e Interrelationships 24of46 3 f TheRoof ConsidersimpactoftechnicalrequirementsoneachotherFeaturetofeaturecomparisonAugmentorimpede CriticalQuestion Doesimprovingonerequirementcauseadeteriorationorimprovementinanotherrequirement 25of46 3 f TheRoof 26of46 3 g Targets SummarizepreviousstepsDrawconclusionsConsistsof TechnicalPrioritiesCompetitiveBenchmarksFinalProductTargets Resultsfromprevioussteps CustomerrequirementsPrioritizedcustomerrequirementsTechnicalrequirementsCorrelatedrequirementsFeatureinterdependencies 27of46 3 h TechnicalPriorities 28of46 3 i CompetitiveBenchmarks 29of46 Webbingstrength Meetsstandards Paddingthickness ofbuckles Harnessweight 3 j FinalProductTargets 30of46 3 k HouseofQualitySummary Inputs CustomerrequirementsTechnicalrequirementsCustomerprioritiesMarketreality competitiveanalysisOrganization sstrengths weaknessesOutputsPrioritizedtechnicalrequirementsMeasurable testablegoals 31of46 Exercise2 BuildaHouseofQuality 32of46 3 l HouseofQualityProsandCons Pros GeneratesspecifictechnicalrequirementsRequirementsaretraceableFollowsarepeatable quantitativeprocessEffectivelytranslatesVoiceoftheCustomerRecordsrationaleforeachtechnicalrequirementCons Time consumingprocessfor 10requirementsDatastorage manipulationandmaintenancecostsVerydependentoncustomerrequirementgatheringInflexibletochangingrequirements mustrecalculate 33of46 4 QFDLifeCycleComparisons 34of46 4 a QFDandCleanroom SAIC 2001 35of46 4 b QFDandSASD 36of46 4 c QFDvs JAD 37of46 4 d QFDandPD 38of46 4 e QFDvs RAD 39of46 4 f QFDvs SSM Wilson 2001 40of46 4 g QFDandRUP Ronin 2001 41of46 4 h QFDandXP Wells 2001 42of46 5 Conclusions 43of46 5 Conclu