CAJ | 학술논문

为研究交通流对象动态特性,提出了描述城市交通流对象的一般模型结构,确定了描述单路口交通流为代表的城市路网交通流的典型动态环节.通过设计不同的仿真试验内容,获得了不同条件下的不同仿真交通流的输入输出数据,基于系统辨识的方法分别建立了单路口交通流的传递函数模型.研究表明,城市交通流的周期控制通道传递函数为三阶系统;绿信比控制通道传递函数为二阶系统.该传递函数模型能够很好地描述交通流状态,可以用于交通流对象动态特性研究.
위연구교통류대상동태특성,제출료묘술성시교통류대상적일반모형결구,학정료묘술단로구교통류위대표적성시로망교통류적전형동태배절.통과설계불동적방진시험내용,획득료불동조건하적불동방진교통류적수입수출수거,기우계통변식적방법분별건립료단로구교통류적전체함수모형.연구표명,성시교통류적주기공제통도전체함수위삼계계통;록신비공제통도전체함수위이계계통.해전체함수모형능구흔호지묘술교통류상태,가이용우교통류대상동태특성연구.
A general model structure is proposed to describe urban traffic flow in order to study the dynamic characteristics of the traffic flow.Some typical dynamic units are presented to describe the traffic flow of an intersection.which are the representstion of the road network traffic flow.The study is carried out by means of simulation experiments.In order to get the input/output data of the simulated trraffic flow under different conditions,many different simulation experiments are designed.Using the input/output data.the transfer funetions model of the traffic flow at interseetion is put forward based on the methods of system identification.The research shows that the transfer funotions of the cycle control channels are three-oraler systems;the transfer funotions of the split control channeh are two-order systems.The transfer functions model can describe the states of traffic flow of an intersection,and it can be used to study the dynamic characteristics of the traffic flow.