基于模糊控制的智能交通研究
[Abstract]:With the development of human economy and society, automobile, as a vehicle, plays an important role in people's life. It brings great convenience to human beings, but also makes people face many challenges, such as traffic congestion and road safety problems. Although traffic light control has been widely used, there are still some shortcomings to the increasingly complex control situation in our country. Therefore, the fuzzy control method is adopted to study traffic control in order to realize the high efficiency and energy saving traffic of traffic road. To achieve the effect of intelligent control of the crossroads, the main work of this paper is as follows: 1. In this paper, the research status of traffic intersection control based on fuzzy control principle is discussed. The intelligent traffic control hardware platform is built with STC89C52 as the core controller, and the software and hardware are introduced in detail. The vehicle arrival model is established, the traffic flow is controlled by setting the vehicle arrival rate, the timing control, the control effect of the traditional fuzzy control algorithm and the multistage fuzzy control algorithm on the traffic signal timing are analyzed, and the simulation test is carried out by using MATLAB. The comparison curves of the average delay time and the queue length of vehicles passing through the crossroads under different traffic flow are obtained. The results show that the multistage fuzzy control has a greater advantage than timing control and traditional fuzzy control when the traffic flow is large. The Keil uVision3 software is used to program the control chip and STC-ISP software is used to burn the program to the control chip, and the software test and hardware simulation system are combined to debug the control chip. The monitor interface design, parameter setting and realization process of upper computer are shown. Because of the accident, randomness and uncertainty of traffic flow at different time, the traditional control methods often lead to waste of effective traffic time, empty traffic, etc. Especially when the vehicle needs to turn left to other direction, it is easy to happen accidents, and the left-turn vehicle is easy to rob the pedestrian on the sidewalk, which makes the busy intersections often clog up. In this paper, the traditional timing control, traditional fuzzy control and multistage fuzzy control are analyzed from four performance evaluation indexes: control performance, power consumption, adaptability and cost. The multi-stage fuzzy controller is used to optimize the control performance under the condition of large traffic flow. The effectiveness of the proposed control method is verified by MATLAB. The analysis results show that the control method has better control effect, lower power consumption and lower cost.
【學(xué)位授予單位】:西安科技大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:U495
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