|
|
自动化学报 2005
一种基于加权性能指标的多模型辨识算法及其在热工过程中的应用, PP. 470-474 Keywords: Multi-model,identification,nonlinear,localmodelnetwork,thermalprocess Abstract: ？Mostexistingalgorithmsforidentifyingmulti-modelsystemarebasedonminimizingthesquareofbiasbetweenglobaloutputsoftheactualsystemandtheidentifiedmodel,buttheresultantmodellacksofrobustness.Inordertosolvethisproblem,thispaperconsiderssomeotheralgorithmsinwhichlocalmodelsareidentifiedindependentlyandpresentsamulti-modelidentificationalgorithmbasedonweightedcostfunction,whichusestheideaoflocalweightedregressionandlocalapproximationwhilekeepsthemodelstructureofglobalidentificationalgorithm.Theresultofapplicationtoa300MWunitboilersuperheaterillustratesthatthemulti-modelgeneratedbytheproposedalgorithmhasbettertrade-offbetweenglobalfittingandlocalinterpretation.
|
