本文選題：交通工程 + 城市交叉路口�。� 參考：《公路交通科技》2014年02期

【摘要】：為了使跟馳模型能更準(zhǔn)確地反映車輛的實(shí)際行為,在驗(yàn)證全速差模型的基礎(chǔ)上,對(duì)安全間距和速度差對(duì)后車的加速度影響做了重新考慮,提出了改進(jìn)模型。改進(jìn)模型將安全間距看作時(shí)變函數(shù),將速度差對(duì)跟馳車加速度的影響看作非線性相關(guān)的函數(shù)。對(duì)城市交叉路口道路拍攝交通流視頻,利用MATLAB對(duì)每幀圖像做透視變換,然后手動(dòng)記錄車輛在變換后的每幀圖像中的坐標(biāo)。將所得的車輛坐標(biāo)數(shù)據(jù)擬合出車輛位移函數(shù),求導(dǎo)算出其速度函數(shù),再進(jìn)行離散化,得到速度數(shù)據(jù)。使用迭代算法將所得的速度數(shù)據(jù)分別代入全速差模型和改進(jìn)模型的差分方程中,算出模型速度,并將2模型運(yùn)算結(jié)果作圖進(jìn)行對(duì)比。結(jié)果表明:改進(jìn)模型在城市交叉路口環(huán)境中更能準(zhǔn)確地反映車輛的跟馳行為。
[Abstract]:In order to make the car-following model reflect the actual behavior of the vehicle more accurately, based on the verification of the full-speed difference model, the effects of safety spacing and velocity difference on the acceleration of the rear vehicle are reconsidered, and an improved model is proposed. The improved model regards the safe distance as a time-varying function and the effect of velocity difference on the acceleration of a car-following car as a nonlinear correlation function. Taking the video of traffic flow on the road at the intersection of the city, using MATLAB to make perspective transformation to each frame image, and then manually recording the coordinates of the vehicle in each frame image after the transformation. The vehicle displacement function is fitted from the vehicle coordinate data, the velocity function is derived and the velocity data are obtained by discretization. The velocity data obtained by the iterative algorithm are substituted into the difference equations of the full speed difference model and the improved model respectively, and the velocity of the model is calculated, and the results of the two models are compared with each other. The results show that the improved model can more accurately reflect the car-following behavior of vehicles in urban intersections.
【作者單位】： 西北工業(yè)大學(xué)自動(dòng)化學(xué)院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(61134004)
【分類號(hào)】：U491

【參考文獻(xiàn)】

相關(guān)期刊論文 前4條

1 許倫輝;羅強(qiáng);吳建偉;黃艷國(guó);;基于最小安全距離的車輛跟馳模型研究[J];公路交通科技;2010年10期

2 孫棣華;張建廠;廖孝勇;田川;李永福;劉衛(wèi)寧;;非鄰近車輛最優(yōu)速度差模型[J];交通運(yùn)輸工程學(xué)報(bào);2011年06期

3 姜 銳,吳清松,朱祚金;一種新的交通流動(dòng)力學(xué)模型[J];科學(xué)通報(bào);2000年17期

4 彭光含;孫棣華;何恒攀;;交通流雙車跟馳模型與數(shù)值仿真[J];物理學(xué)報(bào);2008年12期

【共引文獻(xiàn)】

相關(guān)期刊論文 前10條

1 劉秋菊;景國(guó)勛;房耀洲;;淺析城市交通擁擠現(xiàn)象及解決方法[J];安徽建筑;2007年01期

2 S.C.Wong;Rui Jiang;;A car-following model with the anticipation effect of potential lane changing[J];Acta Mechanica Sinica;2008年04期

3 王秋平;譚學(xué)龍;;城市道路交通控制與交通誘導(dǎo)一體化系統(tǒng)方案研究[J];城市公共交通;2007年01期

4 劉慧英;薛春峰;寧飛;;高速公路監(jiān)控系統(tǒng)中限速控制策略的研究[J];長(zhǎng)沙交通學(xué)院學(xué)報(bào);2006年04期

5 王立鋒;李正熙;;基于車輛跟馳理論的交通流動(dòng)力學(xué)模型與數(shù)值仿真[J];東南大學(xué)學(xué)報(bào)(自然科學(xué)版);2005年S2期

6 樊兆賓;史忠科;楊s，

本文編號(hào)：1844114