射流偏转板伺服阀放大级优化设计

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1、Mar．2015HydromechatronicsEngineeringVo1．43No．6HydromechatronicsEngineeringhttp-／／jdy．qks．cqut．edu．cnE—mail：jdygcyw@126．cornOptimaldesignforamplifierofjetdeflectorservovalveYao—xingSHANG，Xiao—shuZHANG，Chang—weiHU，ShuaiWU(SchoolofAutomationScienceandElectricalEngineer

2、ing，BeihangUniversity，Belting100191，China)Abstract：Inviewoftheexcellentfeaturesoftheetdeflectorservevalvewithcomparisonofothervalveproductsbutlackofitsdomesticrefined，theoptimaldesignofitskeystructure，amplificationstage，isproposed．TheCADsoftwareisusedtomakemodelfort

3、heamplificationstageflowfieldoftheietdeflectorservovalve，andsev—eralmodelsaremadeforthestructuresizewhichneedtobedesigned．Thenthesemodelsareproperlydividedintomeshin0rdertoanalyzeitsflowfieldsothatwecangetthedistributionconditionoftheflowpressureandvelocityondiffere

4、ntstructuresizeandmovingsituation．Atlastthroughanalyzingtheexperimentdataandsurfacefitting，theanalyzingresultandworkingsurfacecouldbeusedtoguidetheparameterselectionbyselectinggoodworkingpoint，namelytheparameteroptimization．Keywords：Jetdeflectorservovalve，Flowfielda

5、nalysis，Parameteroptimization，Surfacefittingdoi：10．3969／j．issn．1001-3881．2015．06．003Documentcode：ACLCnumber：TP2lltienofthedeflectionplate『5]．ItcanbeseeninFig．1Introductionure1thattheminimumsizeofthenozzleflappertypeisabout0．03—0．05mm，whilethatoftheietdeflec—Theietde

6、flectorservovalveisarelativelynewkindtionplatetypeisabout0．2—0．3mmwhichisanor-ofelectro—hydraulicservovalve，whichmainlyconsistsderofmagnitudehigherthantheformer．Sothelargerofthetorquemotorcomponents，valvecomponentsandparticlesimpuritiescaneasilygetthroughwhichthedef

7、lectionplateamplifiercomponents[1-2]．meanstheabilityofresistingpollutionofthejetde—Comparedwiththecurrentmainstreamones，suchasflectorplatetypeisgreatlyimproved[6]．Inaddi—thenozzleflapperservovalveandthejetpipeservotion，evenifthereisablockageinthenozzleofthevalye，Ith

8、asmoreadvantagesf34]．Themaindiffer-later．thevalvespoolwillautomaticallyreturntotheencebetweenietdeflectorservovalveandthenozzleequilibrium