摘要
路网交通亚健康状态下大量的实时路况信息难以得到有效应用,容易导致交通路网区域的某个路段距离完全"堵塞"剩余时间随机性严重等问题,因此,对亚健康状态下交通流的特性进行细致分析成为解决交通拥挤及阻塞状况面临的一个关键问题。在考虑山地特色独有路网结构的基础上,针对山地城市路网交通亚健康状态的特点,结合分形理论对路网交通亚健康状态下的短时交通流数据信号进行分析。研究了路网交通亚健康状态下的短时交通流数据信号的分形特性,并通过对交通流信号多重分形谱参数特征的计算,得到了亚健康状态下交通流信号非平稳信息的表征。实验分析表明,所提出的分析方法具有良好的效果,可以为山地城市路网亚健康状态下交通的畅通控制提供良好的理论支撑。
A lot of real-time traffic information is difficult to be effectively applied in sub-health state of the traffic, and easily lead to the randomness of the remainder time, so a detailed analysis of the traffic flow to solve traffic congestion is a key issue. Aim at the characteristics of the mountain cities＇ road network traffic with sub-health state, the short-time data signal, in the sub-health state of the road network traffic is analyzed. Fractal characteristics of short-term traffic data signal is in research based on the self-similarity of the traffic data signals. The non-stationary property of the traffic flow signal in the sub-health state is known through the calculation of the muhifractal spectrum parameters of the traffic flow signal. The experimental results show the feasibility of the method, which also can provide theoretical support for the traffic flow control of the mountain city road network in the sub-health state.
出处
《控制工程》
CSCD
北大核心
2012年第4期583-586,共4页
Control Engineering of China
基金
国家自然科学基金资助项目(61004118)
重庆市自然科学基金项目(cstc2011jjA70007)
重庆交通大学(桥梁)结构工程重点实验室开放基金资助项目(CQSLBF-Y11-5)
重庆市教委科学技术研究项目(KJ120422)
关键词
山地城市
交通流
亚健康状态
多重分形
mountain city
traffic flow
sub-health state
multifractal
