近似动态规划方法及其在交通中的应用(3)

发布时间:2021-06-06

ABSTRACT

ABSTRACT

Thisdissertationfocusedonsomeissuesonapproximatedynamicprogramming(ADP)anditsapplicationsintransportation.Themainworkandkeycontributionswere

assummarized

1.Basedthefollowing:Steffensen’Smethodandformerweights’values,anewoptimizedon

acceleratedalgorithmwaspresentedforneuralnetwork.Onthebasisofthisnewoptimizedacceleratedalgorithm,anewADHDP(Action.DependentHeurigicDynamicProgramming)method

proposed.Abasedonformerweights’valuewasmadedata(ADHDP(D)forshort)wasADHDPandADHDP(D).detaileQanalysisbetweenthe

Simulationresultsshowedthegoodperformanceofthisnewalgorithm.Furthermore,aninitialweightscompositionalmethodwasproposed.Simulationresultsdemonstratedtheconvergencepropertyisimprovedeffectivelyincomparisonwithinitialweightsrandomlypreassigned.

2.Consideringonthattrafficsystemis

onastrongnonlinearanduncertainsystem,anidentificationmethodbasedADPwasdevelopedtoestimatetheparametersofthe

generaldiscrete—timenonlineartrafficflowsystem.Withrigorousanalysis,itwasshownthattheproposedidentificationscheme,independentoftheprecisetrafficflow

tomodel,canguaranteetheconvergence.Anumberofsimulationresultswereprovided

theefficacyoftheproposedapproach.

3.Anadaptivesingle—exponentsmoothingbasedonADPwasputforwardtoselectthesmoothingcoefficientdynamically.Withrigorousanalysis,itwasshownthattheproposedpredictionschemecanguaranteetheconvergence.Thesimulationresultsverifidtheeffectivenessoftheproposedalgorithm.

4.Theoptimal

onsignaltimingproblemwasinvestigatedforanurbanintersection.BasedthetechniqueADP,theoptimalsignaltimingcontrollerswere

proposedforthetwo—phaseintersectionandthree—phaseintersection,respetively.ThesimulationexamplesshowedthatthecontrolalgorithmbasedonADPcanallocategreentimerationallyandachievetheequilibriumofqueuelength.Furthermore,takingtheoptimalsignaltimingofthree—phaseintersectionforexample,simulationsverifidthattheinitialweightsaffecttheconvergenceresult.

5.BasedonthetechniqueofADRtheproblemsoflocalrampandcoordinatedramp

toavoidthemeteringwerediscussed.TheADPcontrollerwasdesigneddifficultyof

trafficflowmodeling.SimulationresultsdemonstratedthenewcontrollershavebetterV

近似动态规划方法及其在交通中的应用(3).doc 将本文的Word文档下载到电脑

精彩图片

热门精选

大家正在看

× 游客快捷下载通道(下载后可以自由复制和排版)

限时特价:7 元/份 原价:20元

支付方式:

开通VIP包月会员 特价:29元/月

注:下载文档有可能“只有目录或者内容不全”等情况,请下载之前注意辨别,如果您已付费且无法下载或内容有问题,请联系我们协助你处理。
微信:fanwen365 QQ:370150219