汽輪機(jī)電液調(diào)節(jié)系統(tǒng)建模及其參數(shù)辨識(shí).pdf

1、洳≥：j、碩士學(xué)位論文論文題目逸整扭電遺遢董垂縫建撞墅墓叁麴迸遲作者姓名奎通指導(dǎo)教師堡造箜二奎菌學(xué)科(專業(yè))墊筐王要所在學(xué)院狃越量籃返工猩堂醫(yī)提交日期2QQ生!旦摘要AbstractTheDEHsystemisimportantandessentialforthesafe，steadyandeconomicaloperationofsteamturbineThroughidentifyingtheDEHsystem，wecanmonit

2、ortheoperationalstateandthechangesofUnitandpredicttheperformanceofDEHsystem，thusprovidingimportantreferenceforthemidandlongtermsteadyanalysisofelectricnetworkandthecontrollingofthefrequencyThereforetheestablishmentofthem

3、odelofDEHsystemandtheidentificationofitsparametersaresignificantforthesteadyanalysisoftheelectricnetworkTwoparameteridentificationmethods，thecorrelationmethodandtheleastsquaremethodareresearchedinthispaperInthemeanwhile，

4、weapplythemtotheestablishmentofDEHmodelanditsparameteridentificationofthepowerplantThecorrelationmethodistheonethatcomputesthefrequencyresponseofthecomponentsofDEHbyutilizingtheinputandoutrIutdata，andthencalculatesthetra

5、nsferfunctionoftheDEHsystembyusingLevymethodTheleastsquaremethodisaclassicalidentificationmethodwhichisSOconciseandusedSOwidelythatitcanbeusedwithoutmuchstatisticandmathematicalknowledgeFirst，weanalyzetheprecisionoftheid

6、entificationprocedureindifferentsamplingfrequenciesandindifi、erentinputsignalsthroughsimulationThenwetakethesetwoidentificationmethodsintothepracticaltestafterascertainingtheappropriateinputsignalandsamplingfrequencyBypr

7、etreatmentoftherealdata，satisfactoryresultsabouttheidentificationareachievedAtpresent，moststudiesonparameteridentificationinChinaarestilllimitedinresearchofthesimulationandidentificationmethodsInthispaperwehavealreadyapp

8、liedtheidentificationmethodtOpracticeThroughprogrammingparameteridentificationsoftwaremuchmoneyissavedandgoodresultsareachievedAlthoughtheidentificationresultsstillhavesomedifferencebetweenacomputedormeasuredvalueandatru

9、eortheoreticallycorrectvalueinpractice，theidentificationinpracticeachievesitsgoalinthewholeidentificationprocessIthasabrightprospectinapplicationIntheend，systemicanalysesandsummarizationontheidentificationaremadeinthispa