基于CFD非稳态模型的温室温度预测控制

2014124512doi10．6041/j．issn．1000-1298．2014．12．048CFD*12111．2100312．830052VenloCFD。CFDCFDCFD。CFD2.65℃3.27℃。、CFD。CFDS24A1000-1298201412-0335-062014-07-062014-09-02*61273227、[e-mail][e-mail]、、、1。CFD2－7。CFD8、。、CFD。CFD9－10CFDGACFDCFD。CFD。CFD/CFDCFDCFD。11.1CFD118°46'32°03'Venlo4mm88%、、、2.0m×0.85m20.4m2262621°。1。CFD1Fig．1PhysicalstructureofgreenhouseCFD111－14。、k-εCFD。DOsolarraytracing。Boussinesq。xzy。160m×80m×50m214m×0.5m×1.6m51m。、14。CFD5min。1.2CFDCFD、CFD。、、、15。16、、AＲMAXAq－1yk=∑5i=1Biq－1uik－ndi+Cq－1εk1Aq－1=1+∑nai=1aiq－iBiq－1=∑nbij=1bijq－jCq－1=1+∑nci=1ciq－iyk———k℃uik———kii=12…5u1、u2、u3、u4、u5———、、、na、nbi、nc———Aq－1、Biq－1、Cq－1ndi———ai、bij、ci———Aq－1、Biq－1、Cq－1εk———、、、CFD/。11na、nbi、ncndina、nbi、ncndi117AＲMAXCFD-AＲMAX。l=1L∑Li=1e2i2L———ei———iCFDCFDCFD-AＲMAXCFD、CFD-AＲMAX。ＲootmeansquarederrorＲMSE、MaxabsoluteerrorMAE、MeanerrorMEF。63320142CFDCFDCFD-AＲMAX、、。MBPCModelbasedpredictivecontrol、18。19。CFDMBPC2CFD-AＲMAXMBPC。2CFDFig．2SchematicofmodelpredictivecontrolbasedonCFD120^y=GΔu+y02^y=^yk+1|k^yk+2|k…^yk+Np|kTΔu=ΔukΔuk+1…Δuk+Np－1TG=g100…0g2g10…0g3g2g1…0gNpgNp－1gNp－2…gy0=^y0k+1|k^y0k+2|k^y0k+Np|k+111ek+1Δu———gi———Npy0———1Jk=λ1∑Npj=1^yk+j|k－yrk+j2+λ2∑Nc－1j=0Δuk+j23Δuk+j=uk－uk－1j=0uk+j－uk+j－1j=12…Nc－1{^yk+j|k———kk+jyrk+j———λ1———λ2———Np———Nc———Np＞NcΔuk+j———kj。yrk=ykyrk+j=αyrk+j－1+1－αrk+j0＜α＜1{α———0.4rk+j———。MBPCminuk|k…uk+Nc－1|kJk73312CFDs．t．0≤uk+j|k≤1j=0…Nc－14yr=yrk+1yrk+2…yrk+NpT3J=λ1y－yrTy－yr+λ2ΔuTΔu5y=^yJ/Δu=0Δu=GTG+λ2I－1GTλ1yr－y06Δu1。3CFD14CFD-AＲMAX。201111252632526。1na=5、nbi321。na、ndinc5nbi3。3Fig．3Externalclimaticparameter1CFD-AＲMAXCFD、。1CFD-AＲMAXCFDＲMSE0.4393℃0.5888℃。4CFD-AＲMAX525min95.03%。1CFD-AＲMAXTab．1ErrorstatisticanalysisofCFD-AＲMAXmodelME/℃MAE/℃ＲMSE/℃CFD0.41211.10290.43930.48371.46660.58884Fig．4ValidationofpredictiveoutputCFD-AＲMAX2624h35MBPC0～11。25℃30℃13℃16℃8℃30℃5MBPCFig．5ControlsimulationofMBPCcontroller14℃27℃。5000～8009.8～12.2℃1140～150819.4～23℃1.83℃1.67℃2.56℃3.03℃。9.8℃23℃MBPC3.27℃2.65℃10.97～28.8℃57.5%。。833201441CFDCFD。CFD-AＲMAXＲMSE0.5888℃。2CFDMBPC。。3CFDCFD、“”“”、CFD。1．J．20082071869－1875．LiJinQinLinlinYueDazhietal．ExperimentgreenhousetemperaturesystemmodelingandsimulationJ．JournalofSystemSimulation20082071869－1875．inChinese2．J．2006375101－105．ShenMingweiHaoFeilin．SteadystatenumericalsimulationofairflowpatterninnaturalventilatedtunnelgreenhouseJ．TransactionsoftheChineseSocietyforAgriculturalMachinery2006375101－105．inChinese3．J．2009406179－183．ChengXiuhuaMaoHanpingWuDelinetal．NumericalsimulationofthermalprofilesinspatialandtemporalfieldfornaturalventilatedglasshouseJ．TransactionsoftheChineseSocietyforAgriculturalMachinery2009406179－183．inChinese4．CFDJ．20122816166－171．ZhangQixunYuHaiyeZhangZhongyuanetal．AirflowsimulationinsolargreenhouseusingCFDmodelJ．TransactionsoftheCSAE20122816166－171．inChinese5．J．2011422180－185．WuFeiqingXuFangZhangLibinetal．NumericalsimulationonthermalenvironmentofheatedglassgreenhousebasedonporousmediumJ．TransactionsoftheChineseSocietyforAgriculturalMachinery2011422180－185．inChinese6．CFDJ．20124312222－228．HaoFeilinShenMingweiZhangYa．3-DsteadysimulationoftemperaturepatterninsidesingleplasticgreenhouseusingCFDJ．TransactionsoftheChineseSocietyforAgriculturalMachinery20124312222－228．inChinese7．J．2010411153－158．WuFeiqingZhangLibinXuFangetal．NumericalsimulationofthethermalenvironmentinamechanicallyventilatedgreenhouseJ．TransactionsoftheChineseSocietyforAgriculturalMachinery2010411153－158．inChinese8KhalafvandSSNgEYKZhongL．CFDsimulationofflowthroughheartaperspectivereviewJ．ComputerMethodsinBiomechanicsandBiomedicalEngineering2011141113－132．9．CFDJ．2012434156－161．LiYongboZhouWeiLiPengfeietal．TemperaturehomogeneitycontrolofgreenhousebasedonCFDsimulationmodelJ．TransactionsoftheChineseSocietyforAgriculturalMachinery2012434156－161．inChinese10．CFDGAJ．2013443186－191．LiYongboSunGuoxiangLouEnpingetal．Multi-indexGAoptimalcontrolofgreenhousetemperaturebasedonCFDmodelJ．TransactionsoftheChineseSocietyforAgriculturalMachinery2013443186－191．inChinese11．VenloJ．2013359190－193．ZhouWeiWangXiaochan．Venlo-typegreenhousemicroclimatesimulationresearchintheplumrainywatherofsouthChinaJ．JournalofAgriculturalMechanizationＲesearch2013359190－193．inChinese12FluentInc．FLUENT6.3documentationM．LebanonNHFluentInc．2006．13．M．1991．14．VenloJ．20144511304－310．ZhouWeiWangXiaochanLiYongbo．UnsteadytemperaturesimulationundervariableboundaryconditionsforVenlotypegreenhouseJ．TransactionsoftheChineseSocietyforAgriculturalMachinery20144511304－310．inChinese15．J．2008374500－508．LiJinQinLinlinWuGangetal．On-linemodelingofmoderngreenhousetemperaturesystemJ．InformationandControl2008374500－508．inChinese93312CFD16．M．200648－49．17UchidaFraustoHPietersJGDeltourJM．ModellinggreenhousetemperaturebymeansofautoregressivemodelsJ．BiosystemsEngineering2003842147－157．18．J．1998273197－205．LiangJunDuLi．AsurveyonrobustnessofadaptivecontrolsystemsJ．InformationandControl1998273197－205．inChinese19．D．2008．QingLinlin．Modelingandcontroloftemperaturesysteminagreenhousebydeepflowtechniqueofn