基于電流變阻尼器控制的浮筏隔振系統(tǒng)的隔振效果研究

1、上海交通大學碩士學位論文基于電流變阻尼器控制的浮筏隔振系統(tǒng)的隔振效果研究姓名：邵鵠申請學位級別：碩士專業(yè)：精密儀器及機械指導教師：陳大躍20081101上海交通大學碩士學位論文ABSTRACT第II頁ISOLATIONCONTROLOFTHEFLOATINGRAFTUSINGTHEELECTRORHEOLOGICALMOUNTABSTRACTElectrorheologicalfluidsaresmartmaterialsthedamp

2、ersofvibrationisolationbasedonelectrorheologicalfluidscanincreasetheeffectsofisolation.TestbedisolationcontrolsystemistoachievecontrolmethodsystemtestingERisolationofkeyequipment.Thispaperstudiesfocusonthesemiactivecontr

3、olofvibrationisolationresearchsimulationprogramthepreparationofthesimulationresultsisolation.Firstusedoublelayervibrationisolationsystemasamodeltoanalysispassivevibrationisolationtechnology.Respectivelythesimulationinput

4、powerfasinglesinusoidalsignalmultifrequencysinusoidalsignalpulsesignalaswellastheimpactofromsignalsincaseofvibrationisolationsystemseffect.Bycomparingthesimulationresultsweconcludedthattherearelimitationsofpassivevibrati

5、onisolationespeciallytheinputsignalhascomplexfrequenciescomponents.Theeffectofvibrationisolationisnotgoodweneedtofindabettereffectofvibrationisolation.Secondtheoptimaldampingcurvewassolvedonthebasisofcalculusofvariations

6、.Setouttheoptimaldampingcurveoftheequationuseofcalculusofvariationsprinciple.Makeuseoffunctionalderivativefsolvingfunctionaldeclinedirection.Usethegradientdescentmethodtosolvethefunctionalextremesoastosolvethenumericalso

7、lutionoftheoptimaldampingcurve.Thirdpreparethesimulationprogramtosimulatetheeffectsofoptimaldampingvibrationisolation.Thesimulationresultswereasfollows:optimaldampingvibrationisolationinthesinglefrequencysignalinputlowfr

8、equencybclosetothelargestpassivevibrationdampingvibrationisolationeffectofhighfrequencybclosetothesmallestpassivevibrationdampingvibrationisolationeffect.Optimaldampingvibrationisolationismuchbetterthanpassivevibrationis