公路路面湿滑对汽车操控的影响研究

为了探究恶劣天气条件下公路路面湿滑对汽车操控的影响,文章以相关研究为基础,对湿滑路面对汽车制动距离和转向稳定性的影响进行了深入分析。结果显示,湿滑路面的摩擦系数下降导致制动距离延长,轮胎失去抓地力使得转向不稳定成为常态。针对这一问题,本文探讨了ABS防抱死制动系统和车辆动态稳定控制系统等防滑技术,同时提出了驾驶员在湿滑路面行驶时需要保持车速适中、采取缓慢而稳定的转向和制动动作等应对策略。

J.D.Power & Associates 2004 APEAL调研

J D Power ＆ Associates 2004汽车性能、操控和设计(Automotive Performance,Execution and Layout,简称APEAL)调研结果日前公布.调研显示,一批2004年推出新车型因为其大胆的风格、创新的配置而受到用户的欢迎,市场表现出色.

Disturbance Observer Based Control for Four Wheel Steering Vehicles With Model Reference

This paper presents a disturbance observer based control strategy for four wheel steering systems in order to improve vehicle handling stability. By combination of feedforward control and feedback control, the front and rear wheel steering angles are controlled simultaneously to follow both the desired sideslip angle and the yaw rate of the reference vehicle model.A nonlinear three degree-of-freedom four wheel steering vehicle model containing lateral, yaw and roll motions is built up, which also takes the dynamic effects of crosswind into consideration.The disturbance observer based control method is provided to cope with ignored nonlinear dynamics and to handle exogenous disturbances. Finally, a simulation experiment is carried out,which shows that the proposed four wheel steering vehicle can guarantee handling stability and present strong robustness against external disturbances.