山区道路弯道上车辆自动减速系统分析、建模与设计

受弯道离心力影响,在弯道处车辆易发生侧滑和侧翻,山区道路转弯车道为交通事故高发区.车辆自动减速系统运用ITS技术自动控制车辆,使其能以安全车速通过弯道,避免交通事故发生.阐述车辆在转弯道处的运行机理,并对其在直线路段和曲线路段的运行情况分别建立数学模型,且对模型进行解析,以展现车辆自动减速系统的控制过程.通过对数学模型...

Analysis, Modeling and Design of Automatic Deceleration System for Vehicles on Curves of Roads in Mountainous Area

Turning lanes on mountainous roads are areas with traffic accidents at high risk. Influenced by centrifugal force of curves, vehicles are prone to side sliding and rollover. The automatic deceleration system for vehicles uses ITS technology to control vehicles automatically, enabling them to pass curves at safe speed and avoid occurrence of traffic accidents. This paper expatiates operating mechanism of vehicles at curves, establishes mathematical models for operations of vehicles at straight and curved sections respectively and analyzes the models to demonstrate control process of automatic deceleration system for vehicles. Based on analysis for mathematical models, the paper designs detecting devices required at curves and data transmission required for automatic deceleration system so as to reach the purpose of automatic speed limit of vehicles at curves.