空调房间数学模型的系统辨识及其仿真

X(),,,THESYSTEMIDENTIFICATIONANDSIMULATIONOFMATHEMATICALMODELOFTHEAIRCONDITIONINGROOMLIZhenXIAOYongquan(Dept.ofAir-conditioningEngineering,ShandongUniversityofArchitectureandEngineering)ABSTRACTFirst,thispaperindicatestheimportanceofdynamicmathmodelincontrolsys2tem.Then,themodelofhouseissetupwithsystemidentificationmethodafterthetheoreticalmodelhasbeensimplified.Atlast,theconclusionisdrawnthatthesuitablemodelcanbegainedafterthesimulationvaluesofdifferentmodelsarecomparedwiththemeasuredtempera2ture.KEYWORDSDynamicmathmodelSystemidentificationTransferfunctionSimulation1,,,,,,,,,2,,,()[1],1:15120052REFRIGERATIONANDAIR-CONDITIONINGVol.5,No.1February2005X(KF200304)©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[]=[]-[]+[]-[]:C1ddt=(Q1+Q2)-(Q3+Q4)(1)C1ddt=(Gsc1g-Gsc1)+Q2-(Q3+Q4)(2):C1:,kJ/;Q1:,kJ/h;Q2:,kJ/h;Q3:,kJ/h;Q4:,kJ/h;:,;g:,(1):T1ddt+=K1g(3):T1:,h;:,;g:,;K1:,/,(3):(s)=K1g(s)T1s+1(4)g=m(),(4):(s)=K1mT1s+1(5)T1K1,3,3.1,,,[2]:G(s)=Ke-sTs+1(6)nG(s)=Ke-s(T1s+1)(T2s+1)G(s)=Ke-s(Ts+1)n(7)G(s)=bmsm++b1s+b0ansn++a1s+a0e-s,(nm)(8)3.2,,:(1),;(2);(3),,3.3,,,:(6)K,Ty(t)TKy(t)y3(t)y3(t)=y(t)y()y()y(t)921:©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(t)=0t1-exp-t-Tt(8),T(7)K,,T1,T2KG(s)=1(T1s+1)(T2s+1),T1ET2:y3(t)=1-T1T1-T2e-tT1-T2T2-T1e-tT2(9)T1T2,4,q=1t/h,1:1t()0102030405060708090100120150()000.160.651.151.521.751.881.941.971.992.002.00(6)G(s)=2e-23s20s+1(10)(7)6G(s)=2e-10s(6.79s+1)6(11)[3],2:,6526,21..,1998:137138.2..,2002:2229.3,,..,2001:25827.035©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.