Genetic Optimization Algorithm of PID Decoupling Control for VAV Air-Conditioning System-中国期刊网

摘要 Variable-air-volume(VAV)air-conditioningsystemisamulti-variablesystemandhasmulticouplingcontrolloops.Whileallofthecontrolloopsareworkingtogether,theyinterfereandinfluenceeachother.AmultivariabledecouplingPIDcontrollerisdesignedforVAVair-conditioningsystem.Diagonalmatrixdecouplingmethodisemployedtoeliminatethecouplingbetweentheloopofsupplyairtemperatureandthatofthermal-spaceairtemperature.ThePIDcontrollerparametersareoptimizedbymeansofanimprovedgeneticalgorithminfloatingpointrepresentationstoobtainbetterperformance.Thepopulationintheimprovedgeneticalgorithmmutatesbeforecrossover,whichishelpfulfortheconvergence.Additionallythemicromutationalgorithmisproposedandappliedtoimprovetheconvergenceduringthelaterevolution.Tosearchthebestparameters,theoptimizedparametersrangesshouldbeamplified10timestheinitialidealparameters.Thesimulationandexperimentresultsshowthatthedecouplingcontrolsystemiseffectiveandfeasible.Themethodcanovercomethestrongcouplingfeatureofthesystemandhasshortergoverningtimeandlessover-shootthannon-optimizationPIDcontrol.

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Genetic Optimization Algorithm of PID Decoupling Control for VAV Air-Conditioning System

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Genetic Optimization Algorithm of PID Decoupling Control for VAV Air-Conditioning System

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