CAJ | 학술논문

基于开放边界条件下元胞自动机交通流NS模型，模拟入口概率α、出口概率β、车辆最大速度Vmax以及随机慢化概率ρ对系统流量J 的影响，根据不同流相中流量J 的变化规律，建立NS模型的相图。结果表明，车辆最大速度在一定范围内的增加能提高系统流量，车辆的随机慢化概率在小于临界随机慢化概率ρc时，不会对系统流量造成影响，而超过ρc时，随机慢化概率越大，对系统流量的反作用越明显。Vmax和ρ决定系统相图。当Vmax=5，ρ<ρc时，系统相图只由自由流相和堵塞流相构成，自由流相和堵塞流相被一条曲线分开；ρ>ρc时，最大流相出现，最大流相区域随着ρ增大而增加。
기우개방변계조건하원포자동궤교통류NS모형，모의입구개솔α、출구개솔β、차량최대속도Vmax이급수궤만화개솔ρ대계통류량J 적영향，근거불동류상중류량J 적변화규률，건립NS모형적상도。결과표명，차량최대속도재일정범위내적증가능제고계통류량，차량적수궤만화개솔재소우림계수궤만화개솔ρc시，불회대계통류량조성영향，이초과ρc시，수궤만화개솔월대，대계통류량적반작용월명현。Vmax화ρ결정계통상도。당Vmax=5，ρ<ρc시，계통상도지유자유류상화도새류상구성，자유류상화도새류상피일조곡선분개；ρ>ρc시，최대류상출현，최대류상구역수착ρ증대이증가。
Based on the NS traffic model with open boundary conditions, the influence of the injected probability α, the removed probability β, the maximum velocity Vmax and the randomization probabilities ρ on the flow J is simulated. Then the phase diagrams are constructed due to the change of J in different regimes. Results show that J can be improved along with the increase of Vmax within a certain range. When ρ is smaller than the critical randomization probability ρc , it will not affect J . Whenρexceeds ρc , the bigger the ρ is, the more obvious reaction on J is. Vmax and ρ determinate the phase diagrams. When ρ<ρc , the phase diagram only consists of the free flow regime and the jamming regime, and the two regimes are separated by a curve. When ρ>ρc , the maximum current occurs and it will increase with the increase of ρ.