基于响应面法的微操作平台设计和性能综合

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1、Abstractreliability-basedrobustoptimizationdesignmethodwasproposedbasedon6σrobustdesignandresponsesurfacemethod.Theoptimizationobjectofthestageistherobustnessofthedisplacementmagnification,thenaturalfrequencyandthereliabilitysensitivity,anditsconstraintisthestrength.Comparingthere

2、liability-basedrobustwithdeterministicoptimization,thecomparisonresultsshowedthatthevarianceofthedisplacementmagnificationandthenaturalfrequencydecreaserelativetodeterministicoptimization,butitsmeanvalueisworse,andthereliabilityofthestageincreasedfrom58.36%to1.Thus,itmeetsthedesig

3、nrequirementsofreliability-basedrobustoptimization.3-PPrand3-PPsspacemicro-manipulationstagewiththreetranslationaldegreesoffreedomwereproposedbycombiningtheone-dimensionalstagewithparallelfour-barmechanism(Pr)andguidingmechanism(Ps)respectively.Theproposedstageshavetheadvantagesof

4、compactstructure,largemagnification,andgooddecouplingproperty.Anindexwasproposedwhichreflecteddecouplingproperty.Thesequentialquadraticprogrammingmethodwasappliedtooptimizestagebytakingthedecouplingpropertyastheobject,thestrengthastheconstraintbasedonresponsemethod.Theresultoftheo

5、ptimizationshowedthattheproposedstagehadgooddecouplingproperty.Comparingthestaticanddynamicperformanceof3-PPrand3-PPsstage,itcanbeshownthattheflexibility,decouplingpropertyanddisplacementsensitivityof3-PPsstagearebetterthan3-PPrstage,but3-PPrstagehadlargerdisplacementmagnification

6、andhighernaturalfrequency.KeyWords：micro-manipulationstage;responsesurfacemethod;multi-objectiveoptimaldesign;reliability-basedrobustoptimization;decouplingpropertyIII江西理工大学硕士学位论文目录目录摘要................................................................................................

7、.....................................IAbstract.....................................................................................................................................II第一章绪论...............................................................................................

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