基于线形条件的高速公路运行速度预测及控制研究

发布时间：2018-06-05 07:55

本文选题：线性条件 + 运行速度　；参考：《天津大学》2014年硕士论文

【摘要】：道路线形是能够保证车辆安全行驶的一个重要影响因素，其优劣决定着道路安全状况。所以在尽可能消除各种安全隐患的同时，必须在高速公路设计阶段设计较好的道路线性。目前我国道路线性设计方法主要以设计速度法为主，这种方法是以固定的设计速度进行道路线性设计，车辆在实际行驶过程中无法保持固定不变的车速，因此具有很大的极限性。本文以我国不同类型高速公路及运行车辆作为研究对象，采取了将运行速度作为设计指标进行高速公路不同路段的速度预测模型的同时还考虑了驾驶员的需求以及驾驶员的驾驶规律和道路交通环境，根据车辆在实际中的运行规律进行道路线形设计。对国内外道路线形和运行速度的研究状况进行了完整的分析之后，论文从道路线性的角度对高速公路运行车速变化规律进行了分析，并没有车辆差异和相互干扰等情况，仅仅考虑了在车辆行驶过程中道路线性对驾驶员判断所产生的影响，体现在车辆的运行速度上。而运行速度法的核心是在行车速度预测模型上。那么在对国内外运行车速和道路线性的状况进行分析后，本文最终提出了基于道路线形来预测高速公路运行车速的方法，分析了道路线形与运行车速的相互关系，从而进一步得到各类线形路段高速公路运行车速的变化规律，，并且在该基础上应用线性回归法构建基于道路线形的高速公路预测模型。根据所得到的模型，提出了线性条件下的速度控制方法。最后，依托已建成的依保高速公路，对高速公路行车速度预测模型进行了实例分析，取得了成果，并验证了科学性与真实性。
[Abstract]:Road alignment is an important factor to ensure the safety of vehicles, which determines the road safety situation. Therefore, while eliminating all kinds of hidden dangers as far as possible, better road linearity must be designed in the design stage of freeway. At present, the main method of road linear design in our country is the design speed method. This method is to design the road linearly at a fixed design speed, and the vehicle can not keep the constant speed in the actual driving process. Therefore, it has a great limit. In this paper, different types of highways and running vehicles in China are taken as the research object. Taking the running speed as the design index to carry out the speed prediction model of different sections of expressway, the author also takes into account the needs of the driver, the driving law of the driver and the road traffic environment. The road alignment design is carried out according to the running rule of the vehicle in practice. After a complete analysis of the research status of road alignment and running speed at home and abroad, the paper analyzes the changing law of expressway speed from the angle of road linearity, and there are no vehicle differences and interferences. The influence of road linearity on driver's judgment is considered only in the course of vehicle driving, which is reflected in the running speed of vehicle. The core of the running speed method is the speed prediction model. Then, after analyzing the running speed and road linearity at home and abroad, this paper finally puts forward a method to predict the running speed of expressway based on the road alignment, and analyzes the relationship between the road alignment and the running speed. Furthermore, the changing law of the speed of highway running on all kinds of linear sections is obtained, and on this basis, the prediction model of expressway based on road alignment is constructed by using linear regression method. According to the obtained model, a speed control method under linear conditions is proposed. Finally, based on the established Yibao Expressway, an example analysis of the expressway speed prediction model is carried out, and the results are obtained, and the scientificity and authenticity of the model are verified.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U491

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