單跨簡(jiǎn)支梁豎向振動(dòng)的磁懸浮半主動(dòng)控制的研究.pdf

1、南京航空航天大學(xué)碩士學(xué)位論文單跨簡(jiǎn)支梁豎向振動(dòng)的磁懸浮半主動(dòng)控制的研究姓名：楊勤申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：黃東升20081201單跨簡(jiǎn)支梁豎向振動(dòng)的磁懸浮半主動(dòng)控制的研究IIABSTRACTThetraditionalmethodofverticalvibrationisolationmicrovibrationcontroltechnologyhasbeenfacedwiththeproblemallthetime.A

2、nirreconcilableconflictemergesthatsufficientverticalstiffnessshouldbeneededtosupptupperstructurewhileitshouldbeeliminatedtoisolatingverticalvibration.Maglevtechniqueprovidesanewapproachtocodinatetheconflict.Fthisreasonth

3、ispaperprovidesasemiactivecontrolmodelbasedonmagiclevitationderivesthegoverningequationofSimpleSupptedBeamresearchtheresponseontheromgroundexcitation.Theresearchisasfollowsinseveralaspects:1Assumingtheunifmdistributionma

4、ssconcentratedonthedleofthebeamthegoverningequationofasemiactivecontrolsystemfbendingvibrationofthebeamisderivedbuildnonlineardynamicmodelofthemagiclevitation2Thestabilityofthesystemisstudied.3RungeKuttafmulaismodifiedto

5、solvethesystemsubjectedtotheromgroundexcitation.Calculatetheresponseontheromgroundexcitation.Researchtheresponseofdifferentsuspendedheightexcitationfrequencyinsimpleharmonicwave.Theresultsindicatethattheinertialpositiono

6、fthesuspensionistheequilibriumpointofthesystemitisLstable.Themagiclevitationcomponentissimilartoasoftspringdevice.Thevibrationfrequencyofsemiactivecontrolsystemislowerthansimplesupptedbeamtheaccelerationresponseisobvious