分析洒布车液压泵典型故障检测的实验研究

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1、机床与液压Oct．2012HydromechatronicsEngineeringVo1．40No．19DOI：10．3969／j．issn．1001-3881．2012．19．013ExperimentalStudyofTypicalFaultDetectioninHydraulicPumpofAsphaltDistributorLIUSiyuan，JIANGWanlu，ZHANGShengTheDepartmentofMachineryandElectronicEngineering，YanshanUniversit

2、y，Qinhuangdao066004，ChinaAbstract：Inordertoensurethepropertyandreliabilityofasphaltdistributor，anexperimentalmethodaboutthechangeofsquaredpredictionerrorbasedonPrincipalComponentAnalysis(PCA)ofQstatistics．whichisbasedonanalysisofvibrationsignalofcenterspringfault

3、ofaxialpistonpumpthatisthecorecomponentofhydraulicdrivingsysteminhalfintelligentasphaltdis-tributor，ispresentedtodealwithfaultdetectioninthispaper．Inthismethod．thefeaturefre-quencyoffaultfromenvelopespectrumdiagrambyfilteringde··noisingandenvelopedemodula-tionwil

4、lbefirstlyanalyzed，andthefeaturevectorsamplescouldbeobtainedbasedonwaveletpacketenergymethod；afterthat，thefaultdetectioncouldbeprocessedbyusingnormalworksampletoestablishpdncipalcomponentmodel；eventually，threediferentfaulttypesofcenterspringcouldbeobtainedandstud

5、iedthroughtheexperimentaldatatoverifytheproposedmeth-od．Keywords：asphaltdistributor，faultdetection，PrincipalComponentAnalysis(PCA)，axialpistonpumpWiththecontinuousdevelopmentofChina~na—mileageofChina．Therefore，halfintelligentasphalttionaleconomy，thehighwayconstru

6、ctionindustrydistributorshavealargeshareinthedomesticmar-hasgainedrapidrise．Inordertoensurethequalityket．，andefficiencyofhighwayconstruction，thepropertyThehydraulicdrivesystemofhalfintelligentas—andreliabilityofmechanicalequipmentneedhigherphahdistributorisdesign

7、edbyquantitativeaxialpis-standards．Theasphaltdistributorisoneofessentialtonpumpasapowersourceandopen-looppropor-equipmentsinconstructionprocessandplaysacriti—tionalcontro1．Hydraulicpumpistheheartofthecalroletoensuretheconstructionquality．Accordingsystemwhichwilld

8、irectlyimpactontheperformancetodiferentrequirementsofpavement，differentgradeofthehydraulicsystemaswellaspropertyandcon-ofasphaltdistributorappearsinthemarket，a