Journal of Transportation Systems Engineering and Information Technology

Journal of Transportation Systems Engineering and Information Technology ›› 2006, Vol. 6 ›› Issue (5): 83-86 .

• Systems Engineering Theory and Methods • Previous Articles     Next Articles

Research on Trafic Flow Models Based on Occupancy

CHEN De-wang 1,2，GUAN Ji-zhen 3 ，ZHU Xue-liang 3   

  1. 1．School of Electronics and Information Engineering，Beijing Jiaotong University，Beijing 100044，China 2．State Key Laboratory of Rail Trafic Control and Safety，Beijing 100044，China； 3．Beijing STONE Inteligent Transportation System Integration Co．LTD．，Beijing 100081，China
  • Received:2005-11-21 Revised:1900-01-01 Online:2006-10-20 Published:2006-10-20

基于占有率的交通流参数模型研究

陈德旺1,2 ，关积珍3 ，朱雪良3   

  1. 1．北京交通大学电子信息工程学院，北京100044；2．轨道交通控制与安全国家重点实验室，北京100044；3．北京市四通智能交通系统集成有限公司，北京100081

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Abstract: Adopting occupancy information directly but not density information will be much helpful to practical application of trafic management．In accordance with three classical trafic flow parameter models based on density，three kinds of occupancy-speed models an d occupancy-flow models are deduced in this paper．It makes the trafic flow models more meaningful by taking the constraint conditions into account．The constraint conditions of the param eter of occupancy-based trafic flow model are given and the objective function，evaluation index and optimization methods of these models flxe discussed in detail．The optimistic results show the mode1．constraint conditions and optimization method mentioned in this paper are efective．

Key words: trafic flow model, occupancy-speed model, occupancy-flow model, objective function, optimization

摘要： 直接采用占有率信息而不是密度信息更有利于交通管理的实际应用．根据三种经典的基于密度的交通流参数模型，分别推导了三种占有率速度模型和占有率流量模型．考虑参数的约束条件可使交通流模型更具有实际物理意义，给出了各基于占有率的交通流模型的参数的约束条件，并对模型的目标函数、评价指标和优化方法做了详细的探讨．实测数据的优化结果表明本文所提出的模型、约束条件和优化方法是有效的．

关键词: 交通流模型, 占有率速度模型, 占有率流量模型, 目标函数, 优化