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1、ABSTRACTABSTRACTWiththecontinuousdevelopmentofsocietyandtechnology,theproductswhichareverycommoninourdailylifearebecomingmoreandmorecomplex.Aproductcanbeseenasacomplexsystem.Asfordesignofcomplexsystems,thetraditionaloptimizationanddesigntheoryhasmanydefects,suchaslowefficiency,longprodu
2、ctdevelopmentcycleandsoon.Therefore,anewtheorynamedmultidisciplinarydesignandoptimizationwascreatedbyscientists.UtilizingthecouplingrelationshipamongdisciplinesisstronglyemphasizedbyMDO.Throughcoordinatingvaluesofeachvariablecontinuously,theglobaloptimalsolutioncanbeobtained.Thecoupling
3、relationshipamongdisciplinesmustbefullyconsideredoriginally.Inordertorealizeconcurrentanalysisanddesign,thedesignprogressshouldbeorganizedandcontrolledbydistributedcomputingnetwork.TheMDOtheoryanditstechnologysystemisdeeplystudiedinthispaper.MDOmethodsaredeeplydiscussedandareappliedtoso
4、lvemathematicalexample.Standardcollaborativeoptimizationmethodhasgreatdifficultyincalculation.Aquadraticfunctionisappliedtoillustrateitsdifficulty,andthefundamentalcauseisanalyzedbymathematicaltheory.Threekindsofimprovementmeasuresaredeeplyanalyzedinthisthesis，andareappliedtosolveamathe
5、maticalexample.Severalaspectsarecompared,suchaserror,iterationsandsoon.Throughthecomparison,collaborativeoptimizationwithslackvariablehasbetterperformance.Inmodernsociety,reliabilityisasignificantindextomeasurethequalityofproducts.InordertoimprovethereliabilityofproductsdesignedbyMDO,fi
6、rst-orderreliabilitymethodisfullystudiedinthisthesis,andisalsoproposedtocalculatethereliabilityofsystemsinthestructureofMDO.Hence,collaborativeoptimizationmethodbasedonreliabilityisproposedanditsmodelisestablishedinthispaper.Throughverificationbyamathematicalexample,theproposedmethodisf
7、easibleandveryeffective.TheFORM-COmethodisusedtodesignandoptimizethespeedreducer.Throughcomparison,thereliabilityissignificantlyimproved.Preferenceinformation,forexampleengineeringexperience,canbeintroducedintheprogressofdesignandoptimization,sophysicalprogrammingisfrequentlyus
