Yihu Wu

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In the light of the conditions that the results of traditional criticality safety vehicle distance are hardly able to guarantee the safety in the sudden reaction of the current vehicle, through studying the conditions of traditional criticality safety distance, considering the impact of abnormal deceleration of the current vehicle on following vehicle, and(More)
—The influence factors of reliability for drivers in different running stage are analyzed in the paper, firstly, based on Behavior-causing Theory. Then a new quantification method on transience reliability for drivers is advanced by a new definition " reliability degree " , whose error rate is calculated by the response time of drivers, and the influence(More)
Based on NS model, a mixed traffic flow on single lane is simulated in the paper, which includes two-classification vehicles owing the different max-velocity. Take the one move 5 grids for one time as quick-vehicle, which is the results of aggressive behavior, such as overtaking and closely following behavior. And take the one which moves 3 grids for one(More)
Taking vehicle queue length in urban intersection, traffic flow and signal timing at the present situation as input, the intersection signal timing scheme as output, the minimum network delay as the goal, it constructs a multi - agent traffic signal control system including the execution layer, control layer and decision-making layer. When the queue length(More)
The influence factors of freeway are analyzed in the paper according to the followings: drivers, vehicles, freeway and environments. And ICFCM algorithm is advanced to cluster the influence factors of freeway and get the influence level. In which, there are two improved way in ICFCM algorithm in initialize central and clustering effect. The results show(More)
A method for diagnosis of misfire fault in internal combustion engine based on exhaust density of HC, CO2, O2 and the engine’s work parameters are presented in this paper. Rough sets theory is used to simplify attribute parameter reflecting exhaust emission and conditions of internal combustion engine and in which unnecessary properties are(More)
Through researching at the traditional linear model of car-following, the paper have found it sensitivity is a fixed value, but in the actual process of driving a vehicle, Sensitivity of driver changes with stimulation. This paper set up a new vehicle-following model taking into account the different sensitivity. Through simulation analysis, results show(More)
The relationship between the velocity discreteness σ and the venture degree of vehicle Rear-end accidents on freeway and urban road is researched by NS model. We could get the followings as the results of simulation: Firstly, the value of global standard deviation of velocity on freeway is bigger than the one on urban road. Secondly, the value of(More)
Set a reasonable value of max-limited speed is an important part of traffic control. On the basis of systematically analyzing the information processing mode of driver and considered the performance differences of different vehicles, each kind of traffic information in work zone is classified and quantified and a calculation method of different(More)