預(yù)測PID控制理論及其在烘絲機(jī)中的應(yīng)用.pdf

1、上海大學(xué)碩士學(xué)位論文預(yù)測PID控制理論及其在烘絲機(jī)中的應(yīng)用姓名：徐俊山申請學(xué)位級(jí)別：碩士專業(yè)：控制理論與控制工程指導(dǎo)教師：康惠駿20070201海人學(xué)壩l等j位論文ABSTRACTThedryingcylinderisalargetimedelaysystemwithlargeheatcapacitysothereisstrongnonlinearityandlongtimelagbetweenthemoisturecontentofc

2、uttobaccoandtheinputvariations；atthesametime，thereissomedisturbancesuchasthefluctuationofmoisturecontentoftheenteringcuttobacco，SothenatureofthedryingcylinderprecludedtheconventionalPIDalgorithmfromattainingtheexpectedre

3、sultsThepredictivePIDcontrolalgorithmisusedtoimprovethemoisturecontentcontrollingsysteminthispaperBymeansofthepredictivecontrolfunctionandPIDcontrolfunction，thefluctuationrangeofmoisturecontentofcuttobaccowasdecreased，th

4、eamountofover—driedcuttobaccoduringstartandfinishofdryingoperationwerereduced，andcigarettequalitywasimprovedFromaprojectoftobaccodryinginShanghaiCigaretteFactory，thispaperfi)cusesonthestudyofPredictivePIDcontroltheoryand

5、itsapplicationintobaccodryingmachineThedisadvantageofformercontrolmethod(mathematicmodelandPID)isanalyzedinthispaperThepredictivePIDcontrolmethodisusedtoimprovethemoisturecontentcontrollingsystemThewholecontrolprocessinc

6、ludes：startperiod，middleperiodandfinishperiodFirstlythepredictivePIDcontroltheoryisstudiedThebasicprinciple，classificationanddisadvantageareexpatiatedThebasicprincilc)leanddeductionofpredictivePIDalgorithmarefocusedtoint

7、roduceTheconfigurationsofpredictivecontrollerarededucedforothercontrolprocessesSecondly，thebasicprincipleofmodelrecognitionandseveralkindsofmodelingmethodareintroducedNon—parametermodelrecognitionmethodisusedtobuildthemo

8、delThesimulationisdonetovalidatethemodelSimulationsshowthatthepredictivePIDcontrollerreinainsexcellentcontrolperformanceunderdisturbance，noiseandmodelmismatchIt’SworthyofpopularizinginpracticalapplicationsAttheend，thepre