快速智能化擠出機料筒溫控算法的研究及應用.pdf

1、分類號：TP2735密級：單位代碼：10422學號：20021t432⑧山東亨，番碩士學位論文ShandongUniversityMaster’SThesis論文題目：快速智能化擠出機料筒溫控算法的研究及應用作者姓名專業(yè)指導教師姓名專業(yè)技術職務張凌云毫力電子與電力傳動張承慧教授2005年5月20日山東大學碩士學位論文ABSTRACTTemperatureisoneofthemainobjectsofindustrycontr01Inin

2、dustryprocess，weoftenneedtocontrolthetemperatureExcellenteontrolOVel“tcmperaturecallnotonlyenhancethequalityofproducts，butalsoreduceenergyc4)nsumeandenhanceefficiencyPlasticextruderiSthepivotalequipmentonplastictubemated

3、alsproductlinenletemperaturecontroleffectofextruder’SstuffcontainerinfluencesthecapabilityandqualityofextrusionproductsdirectlyThus，thedependabilityoftemperaturecontroloverstuffcontai【ncrhasbecomeakeypointofproductmoldin

4、g，andatthesametimetemperatureeontrolhasbecomeanimportantpartofextruderproductmanufacturePIDcontrolmethodiSusedintemperaturecontrolthemostcomprehensivelyItiSverysimpleandhasgoodstabilityaswell嬲dependabilitysoitiSoftenused

5、inthoselinearconstantsystemButitcann’tbnngusperfectcon仃oleffectwhenitisusedinnonlinearsystems，oneofwhichishysteresissystem，suchastemperaturecontrolsystemOntheotherhand，becausetheparametersofPIDmustbeadjustedaccordinglywh

6、entheplantchanges，thatiS，adjustor’sparametersarerelatedwiththesteadyconditionofthesystem，itisveryinconvenienttoadjustparametersoveragainoffiineinaprojectInthispaperweanalysetemperaturecontrolproblemdeeplyOnbaseoftheanaly

7、seabouttheprinciplesandcharacteristicsoftraditional】inearPIDcontrollerweanalyseandstudyActive—DisturbanceRejectionController(ADRC)andNonlinearPID(NLPID)andputthemintotemperaturecontrolexperimentbvB&RPCCcontroller111eexpe

8、rimentresultsindicatethatmoreexcellentcon打oleffectsforlargelagobjcotsareobminedwiththesemethodsthanwithtraditionallinearPIDcontrollerandthesecontrollershaveexcellentrobustandselfadaptationperformancenlcmainworksinthispap

9、erare嬲following：(1)anaiysingtheresearchstatusoftemperaturecontrolproblem，thenputringforwardthedi茄cultyemphasesandtherouteofsolution；(2)analysingthecharacteristiesandiusufficienciesoftraditionallinearPIDcontrollerandlooki

10、ngforpropernonlinearfunctionstoconstructnonlinearPIDcontrollerinaproperway；(3)introducingandanalysingADlKtheoryandusingittosolvetemperaturecontrolproblem；(4)havingsimulmiontestsandexperimentsveri6，ingthefcasibilityandadv