Study On Some Problems Of Traffic Control

As economy and society developed, traffic has become the indispensability part of life, it has more and more effect on guaranteeing the economic system and human life.In recent twenty years, traffic network has been established faultlessly by many countries, but, building new roads and other traffic facilities can not meet the fast increase of the amount of vehicle, so more traffic problems such as traffic jam, environment pollution, and traffic accident emerge, which cost huge expense. As above, improving traffic by building road and facility or managing traffic in conventional way costs dearly and pollutes environment seriously, it also has little effect on relaxing traffic jam and advancing traffic. So more and more study on traffic control has come. More than one hundred years have passed since the problem of traffic control was presented, and the control theory has developed for more than sixty years, but the research on dynamic characteristics of traffic flow using control theory is still a difficult job due to complication and the inherent uncertainty of traffic flow which bring lots of problems on traffic control study.At first, clustering arithmetic is presented, clustering arithmetic application of fuzzy control of traffic flow is analyzed. Then an improved clustering arithmetic is presented, the improved algorithm which can make the input of fuzzy control more external and more scientific is applied to the fuzzification of traffic fuzzy control.Then the development of traffic simulation system and object-oriented simulation technology are presented. After that, a simulation software of uncertain traffic flow control of intersection is programmed which is based on traffic control and software engineering. This software has better effect on Real-time traffic control under uncertain traffic flow.At last, the simulation experiments are done under uncertain traffic flow, a large quantity of data is acquired from simulation experiments. The research on dynamic characteristics of traffic control is done as a preliminary study. After study on the dynamic characteristic of traffic flow in the intersection using control theory, relationships between control parameters and states of traffic flow are clarified and some useful conclusions are obtained.