BuildingServ.Eng.Res.Technol.31,1(2010)pp.39–55

RobustMPCfortemperaturecontrolofair-conditioningsystemsconcerningonconstraintsandmultitypeuncertainties

XinhuaXua,ÃPhDShengweiWangaPhDMASHRAECEngandGongshengHuangbPhDa

DepartmentofBuildingServicesEngineering,theHongKongPolytechnicUniversity,Kowloon,HongKongb

DivisionofBuildingScience&Technology,CityUniversityofHongKong,Kowloon,HongKong

Thispaperpresentsarobustmodel-basedpredictivecontrol(MPC)strategyfortemperaturecontrolofanair-conditioningsystem,whichconsistsofmultiplelocal-loopprocessesandeachprocesssuffersfromdifferentdynamicsuncertaintiesorvariations.Whenanappropriatesamplingperiodischosentodiscretisethesystemforcomputercontrol,astate-spacediscretemodelwithanuncertaintypolytopeisdevelopedtodescribethemixinguncertaintiesofthesetypeofsystems.Themainbenefitoftheproposeddescriptionisthatrobustmodelpredictivecontrolcanbeeasilyusedtodesignarobustcontrollerforsuchasystemwhiletakingaccountofconstraintsassociatedwiththissystem.Alinearmatrixinequality-basedMPCalgorithmisemployedforcontroldesign.Casestudywasconductedonadynamicsimulationplatformofanair-conditioningsystem,whichevaluatedthedevelopedstrategyinvarioussimulationtestsbycomparingwiththeconventionalPIDcontrol.Resultsdemonstratedthatthedevelopedstrategyisabletodealwithconstraintsandallowsstableandrobustcontrolwhilemaintainingacceptablethermalcomfort.Althoughthestrategyisillustratedandvalidatedusingaconstantairvolumeair-conditioningsystem,itcanbeappliedtootherconstraintHVACprocessessufferingfromsimilaruncertainties.

…… 此处隐藏664字 ……

1Introduction

Ã

Currentaddress:DepartmentofBuildingEnvironment&ServicesEngineering,SchoolofEnvironmentalScience&Engineering,HuazhongUniversityofScience&Technology,Wuhan,China.

Addressforcorrespondence:GongshengHuang,DivisionofBuildingScience&Technology,CityUniversityofHongKong,Kowloon,HongKong.

E-mail:gongsheng.huang@cityu.edu.hk

Moderncommercialandofficebuildingsarealwaysequippedwithair-conditioningsys-temsprovidingcomfortableenvironmentforoccupants.Variable-air-volume(VAV)andconstant-air-volume(CAV)air-conditioningsystemarecurrentlythetwotypicalprocesseswidelyequippedincommercialandofficebuildings.WhetherinVAVorCAVsystems,

10.1177/0143624409352420

ßTheCharteredInstitutionofBuildingServicesEngineers2010