本文選題：干線 + 協(xié)調(diào)控制　； 參考：《浙江工業(yè)大學(xué)》2014年碩士論文

【摘要】：在干線協(xié)調(diào)控制過程中,為使時序相鄰的不同信號控制方案在切換過程中所導(dǎo)致的系統(tǒng)擾動最小,需要在前后控制方案之間插入過渡方案。過渡方案的優(yōu)化對于提高干線協(xié)調(diào)控制系統(tǒng)的控制效果具有重要的意義。 本文針對干線協(xié)調(diào)控制過程中的具體問題,以干線交通信號協(xié)調(diào)控制方案間的過渡為研究對象,從控制方案間的快速切換方法以及優(yōu)化過渡方法兩個方面進(jìn)行了深入研究,并對不同的過渡方法進(jìn)行了對比分析,為干線協(xié)調(diào)控制系統(tǒng)在控制過程中進(jìn)行不同控制方案間的切換提供技術(shù)支持。本文的主要工作如下： (1)對干線交通信號協(xié)調(diào)控制理論進(jìn)行了介紹,并對協(xié)調(diào)控制過程中控制方案間的過渡問題進(jìn)行了界定和描述,為后續(xù)對該問題的求解奠定基礎(chǔ)。 (2)針對實際控制系統(tǒng)對控制方案間的快速切換需求,分別對直接切換方法、經(jīng)典Add和Subtract過渡方法進(jìn)行了分析,在此基礎(chǔ)上綜合考慮過渡時間和平滑特性,提出一種基于最佳相位差調(diào)整量控制方案的快速平滑過渡方法。該方法以使各交叉口相位差變化量最小為目標(biāo),優(yōu)化計算得出各交叉口最佳相位差調(diào)整量,并以此為依據(jù)計算各交叉口在控制方案過渡期間的信號周期。實驗表明,該方法能夠使干線協(xié)調(diào)控制方案最多通過3個信號周期快速地過渡到新方案,且過渡期間的控制效果優(yōu)于Add和Subtract方法。 (3)針對協(xié)調(diào)控制方案間的最優(yōu)過渡問題,本文以BLX預(yù)測模型為基礎(chǔ),將過渡期間所有車輛從駛?cè)敫删�到駛出干線所花的時間最短作為優(yōu)化目標(biāo),提出了一種基于BLX預(yù)測模型的協(xié)調(diào)控制方案間的優(yōu)化過渡方法。并在VISSIM仿真環(huán)境下將其與快速平滑過渡方法進(jìn)行了對比分析,實驗表明,基于BLX預(yù)測模型的優(yōu)化過渡方法更能適應(yīng)不同流量下的信號控制方案間的過渡,具有更好的控制效果。
[Abstract]:In the process of coordinated control of trunk lines, in order to minimize the disturbance caused by different signal control schemes with adjacent time series in the switching process, it is necessary to insert a transition scheme between the front and rear control schemes. The optimization of transition scheme is of great significance to improve the control effect of trunk line coordinated control system. Aiming at the specific problems in the process of coordinated control of trunk lines, this paper takes the transition between coordinated control schemes of trunk traffic signals as the research object, and makes a deep research on the fast switching method and the optimization method of transition between the control schemes. Different transition methods are compared and analyzed to provide technical support for switching between different control schemes in the trunk line coordinated control system. The main work of this paper is as follows: 1) the theory of coordinated control of trunk traffic signals is introduced, and the transition problem between control schemes in the process of coordinated control is defined and described, which lays a foundation for the subsequent solution of the problem. 2) aiming at the requirement of fast switching between control schemes in practical control system, the direct switching method, classical Add and Subtract transition method are analyzed respectively. On this basis, the transition time and smoothing characteristics are considered synthetically. A fast smooth transition method based on the optimal phase difference control scheme is proposed. With the aim of minimizing the change of phase difference of each intersection, the optimal phase difference adjustment quantity of each intersection is obtained by optimization calculation, and the signal period of each intersection during the transition period of control scheme is calculated according to this method. Experiments show that this method can make the trunk line coordinated control scheme transition to the new scheme quickly through up to three signal cycles, and the control effect during the transition period is better than that of Add and Subtract methods. In order to solve the optimal transition problem between coordinated control schemes, this paper, based on the BLX prediction model, takes the shortest time taken by all vehicles during the transition period from entering to leaving the trunk line as the optimization objective. An optimal transition method between coordinated control schemes based on BLX predictive model is proposed. It is compared with the fast smooth transition method in the VISSIM simulation environment. The experimental results show that the optimal transition method based on the BLX prediction model is more suitable for the transition between the signal control schemes under different flow rates and has better control effect.
【學(xué)位授予單位】：浙江工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U491.54

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本文編號：1857921