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基于模糊PID皮革收缩温度测定仪控制系统设计.docx

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基于模糊PID皮革收缩温度测定仪控制系统设计 Abstract: Inthefieldofleatherproduction,itisimportanttoaccuratelymeasureandcontroltheshrinkagetemperatureofleatherinordertoproducehigh-qualityproducts.ThispaperproposesacontrolsystemdesignforafuzzyPIDleathershrinkagetemperaturetestinginstrument. Introduction: Leatherisawidelyusedmaterialinmanyindustries,includingfashion,automobile,andfurniture.Intheproductionprocessofleather,theshrinkagetemperatureisacrucialparameterthatdeterminesthequalityofthefinalproduct.Theshrinkagetemperaturereferstothetemperatureatwhichtheleatherstartstoshrinkandloseitsshape. Traditionally,theshrinkagetemperatureofleatherisdeterminedthroughmanualtesting,whichistime-consumingandsubjective.Therefore,itisessentialtodevelopareliableandaccurateinstrumenttomeasuretheshrinkagetemperatureofleather.Inrecentyears,variousinstrumentshavebeendevelopedforthispurpose,andamongthem,thePIDcontrolleriswidelyused. However,thePIDcontrollerhaslimitationsindealingwithuncertaintiesandnonlinearitiesinthesystem.Toovercometheselimitations,fuzzylogiccontrolisintroducedtotheleathershrinkagetemperaturetestinginstrument.Fuzzylogiccanhandleuncertaintiesandimpreciseinformationinthesystemandprovidebetterperformance. TheaimofthispaperistopresentafuzzyPIDleathershrinkagetemperaturetestinginstrumentcontrolsystemdesigntoimprovetheaccuracyandreliabilityofthemeasurement. Methodology: Theproposedcontrolsystemdesignconsistsofafuzzyinferencesystem,afuzzyPIDcontroller,andafeedbackloop.Theinputofthefuzzyinferencesystemistheerrorbetweenthedesiredshrinkagetemperatureandtheactualtemperaturemeasuredbytheinstrument.Theoutputofthefuzzyinferencesystemisthedegreeofmembershipoftheerrorindifferentlinguisticvariables(e.g.,large,medium,small,etc.). ThefuzzyPIDcontrollertakesthedegreeofmembershipasinputandcalculatesthecontrolsignalaccordingly.Thecontrolsignalisthensenttotheheatingelementoftheinstrumenttoadjustthetemperature.Thefeedbackloopcontinuouslymonitorsthetemperatureandadjuststhecontrolsignalinreal-timetomaintainthedesire