長江三峽永久船閘輸水閥門啟閉機液壓系統(tǒng)動態(tài)仿真及研究.pdf

1、上海大學(xué)碩士學(xué)位論文長江三峽永久船閘輸水閥門啟閉機液壓系統(tǒng)動態(tài)仿真及研究姓名：包海昆申請學(xué)位級別：碩士專業(yè)：機械電子工程指導(dǎo)教師：張國賢20030101ABSTRACTDigitalsimulationtechnologyiswidelyusedinhydraulicengineeringforitshighprecision，celerityanduncomplicatedsimulationsystemIthasbeenaneffe

2、ctivemeanstostudythedynamicresponseofhydrauliccomponentsandsystemThecontrolofflowpathinhydraulicsystemcomposedofthreadedcartridgevalvesisdifferentfromthatinhydraulicsystemconsistedoftraditionalslidingspoolvalvesThe“on’’a

3、nd“off’oftheAandBportsintraditionaldirectionalcontrolvalveiscontrolledbymechanicalsynchronizationWhilethecontrolof“onand‘‘off’isinfluencedbydynamicresponseofpipeandthreadedcartridgevalvegroupinthethreadedcartridgesystemI

4、t’Sanimportantproblemthathowtomatchthe“on’’and‘‘off’throughthewayofsettingtheworkingsequenceofthepilotvalvesandadjustingthedampsofthethreadedcartridgevalvegroupThesimulationofthesystemisaneffectivemeanstosolvethisproblem

5、，becauseitCanshowUSdisadvantagescausedbythemismatchof“on”and“off’inthesystemandhelpUStotestifythevalidityoftheadjustingmeasuresThroughthesimulationofthehydraulicsystemofopenclosemachineofthefloodgate，wehavegotthefollowin

6、gresults1ThesimulationmodelboxofthreadedcartridgevalvesWasobtainedfromtheseconddevelopmentThemodelswhichareconvenienttoadjustsimulationparametersarethebaseofsimulationofhydraulicsystem2ThesimulationmodelofsystemWasgot謝tl

7、lthe“node”methodThevalidityofthemodelwastestifiedbyexperiments3Thedisadvantagescausedbythemismatchof“on”and“off’ofthethreadedcartridgevalvegroupinthesystemwerestudiedThemeasuretosolveitwasproposedanditsvaliditywastestifi

8、edbysimulation。4TheinfluencetothedynamicresponseofthesystemcausedbythelongpipeWaSstudiedwimthemodelofsystemwhichwasobtainedfromlinkingtheconvergentparametermodelsandthedistributingparametermodelsWeshouldpayattentiontothe