結(jié)構(gòu)振動(dòng)監(jiān)測(cè)系統(tǒng)及振型測(cè)試方法研究.pdf

1、中國(guó)海洋大學(xué)碩士學(xué)位論文結(jié)構(gòu)振動(dòng)監(jiān)測(cè)系統(tǒng)及振型測(cè)試方法研究姓名：楊素軍申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：港口、海岸及近海工程指導(dǎo)教師：楊永春2003.6.1TheStudiesonStructuraIVibrationMonitoringSystemandModeShapesTestingMethodAbstractOnthebasisofthereviewofthepresentsituationandexistingproblemsofstr

2、ucturemonitoringsystem，thepapermakesapreliminarystudyofstructuralvibrationmonitoringsystemandputsforwardanewmodeshapestestingmethodDataacquisition，analysisandprocessingareintegratedinstructuralvibrationmeasurementandanal

3、ysissystemincludingfrequencyspectrum。correlationandpowerspectrumanalysisoftimesignalsoftestingDositionsThetotalstructuralbehaviorisconstructedandstructuralmodeshapes。whosenaturalmodeisknown，aredecomposedandmonitoredStruc

4、turalvibrationmeasurementandanalysissystemlaysthefoundationofstructuralvibratiDnreal—timemonitoringsystemthatcanmonitorthetotalstructuralbehavior，modeshapes，timeandfrequencysignalSThepaperintroducesthebasicprincipleandth

5、eimplementationofthetwoabovesystemsindetailAmethodtoconstructmodeshapesbasedontimedomainsignalsofkeypositionsisbroughtforwardFirstly，frequenciesofeachmodeshapearegainedthroughfrequencyspectrumanalysisoftimedomainsignalso

6、fkeypointsSecondly，timedomainsignals，whichcorrespondtostructuralmodeshapes，aregainedthroughbandpassfiltertechnologyLastly，thecorrespondingmodeshapesofeachnaturalfrequencyareconstructedbyusingtimedomainsignals，whichareDrO