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1、中南大學(xué)碩士學(xué)位論文基于Agent的交叉口微觀仿真系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)姓名:梁欣申請(qǐng)學(xué)位級(jí)別:碩士專業(yè):計(jì)算機(jī)應(yīng)用技術(shù)指導(dǎo)教師:余臘生20080401摘要我國(guó)的交通問(wèn)題和其它大多數(shù)國(guó)家一樣已成為一個(gè)相當(dāng)重要的問(wèn)題,如何運(yùn)用現(xiàn)代的科技手段來(lái)緩解日益嚴(yán)峻的交通壓力,是目前研究的重點(diǎn)。本文根據(jù)Agent的特點(diǎn)首先介紹了運(yùn)用Agent技術(shù)進(jìn)行交通仿真的優(yōu)勢(shì)。然后,搭建了一種基于Agent的交通流微觀仿真系統(tǒng)。對(duì)各Agent及其交互進(jìn)行建模,闡述了各Agent交互協(xié)調(diào)的過(guò)程。在該系統(tǒng)中,每個(gè)交通元素被定義為具有自主性、適應(yīng)性和合作協(xié)調(diào)性的
2、智能化Agent。各Agent可自主地進(jìn)行道路數(shù)據(jù)采集、處理,并通過(guò)相互通信實(shí)現(xiàn)資源共享,從而使每個(gè)交通元素都具有足夠的智能參與交通的智能化決策,能更好的模擬交通元素的行為,在很大程度提高了交通控制的仿真精確度。論文按照面向?qū)ο蟮姆治龊驮O(shè)計(jì)原則,在需求分析的基礎(chǔ)上,對(duì)城市交叉口微觀仿真系統(tǒng)進(jìn)行了模塊劃分,提出了系統(tǒng)的總體構(gòu)架,隨后對(duì)路網(wǎng)描述和控制算法進(jìn)行了分析并得出了6個(gè)基本的類,最后對(duì)信號(hào)燈模型進(jìn)行了討論與實(shí)現(xiàn)。實(shí)現(xiàn)了一個(gè)可復(fù)用可擴(kuò)展的城市交通微觀仿真系統(tǒng)。論文最后通過(guò)一個(gè)仿真實(shí)例驗(yàn)證了本文所提出的仿真系統(tǒng)的有效性。關(guān)鍵詞
3、:交通仿真:微觀仿真;Agent技術(shù);微觀建模:設(shè)計(jì)模式ABSTRACTNowadays,thedefectsexistedinthetrafficsystemhavebeenansignificantproblemwhichshouldbetakenintoaccountinChina.HowtousemodemtechniquestomitigatetheincreasingtrafficproblemsisoneofthefocalpoiIltsincurrentresearches.Inthisthesis,firs
4、tly,thecurrentdevelopmentandapplicationsofAgentinthefieldof仃a伍Csimulationareintroduced,andAgenttechniqueshavebeenappliedinthetrafficsimulation.Secondly,碭eAgentstructuresforsometra伍celementsusedinthemicrotrafficflowsimulationsystemandtheframeofthesimulationsystemhav
5、ebeenbuiltinthisthesis.Inthissystem,theinteractionmodelbetweentheseAgentsaredeveloped.Each艦伍celementisdefinedasanAgentwithself-control,adaptiveandcooperative.EveryAgentCangetandprocessthedataofthetraffic,andcanalsosharetheresourcesthroughcommunication.Therefore,eac
6、hofthemhasaptitudetomakestratagemsoftheira伍c。whichmakesthesimulationsystemmorepracticalandimprovestheprecisionofthetrafficcontrolsystem.Theurbanintersectionmicrosimulationsystemisdividedintoseveralmodulesbasedontheprinciplesofobject-orientedanalysisanddesign,andafr
7、ameworkisproposedonthebasisofrequirementanalysis.Subsequently,afteranalyzingroadnetworkpresentationandcontrolarithmeticselection,sixbasicclassesaredesigned.Atlast,asignalmodelisdiscussedandimplemented.Thusareusableandflexibleframeworkofurbanmixedtrafficmicrosimulat
8、ionsystemisrealized.Finally.the仃a伍Csimulationsystemisevaluatedbyasimulationexamplewhichshowsthattheframeworkisreasonableandeffective.KEYWORDS:tra