基于遺傳算法的動力裝置故障診斷系統(tǒng)研究.pdf

1、華中科技大學碩士學位論文基于遺傳算法的動力裝置故障診斷系統(tǒng)研究姓名：李朝日申請學位級別：碩士專業(yè)：軟件工程指導教師：肖來元20060406華中科技大學碩士學位論文AbstractDieselsareusedinmanyindustryfieldasuniversaldynamicequipmentTheinstantrotationalspeedsignalsofinternalcombustionenginecontainlotsof

2、informationaboutmachinestates，andfitforfaultdiagnosisofICEForthelowmeasuringaccuracyandtherandominfluencesinmeasuringitisnecessarytoextractmanyfaultfeaturesforaccuratelydiagnoseButit’Saverydifficultproceduretoconstructth

3、eeffectivecharacteristicparameterforrflsomanyoriginalfeaturesGeneticalgorithmisakindofrandomsearchingmethodusinglives’naturalselectionandgeneticmechanismItsapplicationpredominanceliesincomplicatedandnonlinearproblemswhic

4、haredifficultfortraditionalsearchingmethodsIndieselfaultdiagnosis，thefaultfeaturesmustbeoptimized，andgeneticalgorithmisveryfittotheproblemThroughtheanalysistofunctionsandcharactersofG九itisputforwardthatGAmaybeusedinparam

5、eters’optimizingofdieselfaultfeatures，andthemethod’SfeasibilityisdemonstratedThetheoryofgeneticalgorithms(GA)andmechanicalfaultdiagnosistechnologyareintroduced，andtheachievedtechnologyofGAisdiscussedUsingDelphitheGAsoftw

6、areareprogrammed，finallytheprogramisusedinparameters’optimizing&dieselfaultfeaturesThenthepaperanalyzedsomeimprovedandachievedtechnologyofG人andgroundedGAachievinginsofcwareTheGAsoftwareisprogrammedusingDelphi，Throu【ghche

7、cksbystandardtestfunctions，itisprovedthattheprogramhasgoodperformanceAtlast，thegeneticalgorithmisusedinfeatures。combinatorialoptimization，andconstructionofthebestcharacteristicparameterAtthestateofthesinglecylinderslight

8、reduceoilsimulatedfaultat6135typediesel，sixoriginalcharacteristicparametersareselectedfromtimedomain，frequencydomainandwaveformparametersofinstantrotationalspeeddataUsinggeneticalgorithm，areconstructedcharacteristicparam