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Integrated Approach to Improving Automotive Vehicle Safety

提高汽车安全的综合方法

基本信息

批准号：
11695060
负责人：
ABE Masao
金额：
$ 2.56万
依托单位：
Kanagawa Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2001
项目状态：
已结题

项目摘要

From the view points of primary vehicle safety, a number of vehicle chassis control laws are proposed to stabilize the vehicle motion and the effects of the controls are proved with the computer simulation. It is also validated on a proving ground using the experimental vehicle. The results shows that the cooperative control of side-slip angle and yaw rate using tire lateral force and longitudinal one gives us dramatic improvement of vehicle stability as well as vehicle responsiveness. In addition to the above, a possibility of an active driver assist-system during emergency situation in a traffic flow depending on some possible information from the road environment in ITS is investigated. A lateral acceleration model following type of assist system during evasive lane change shows significant effects on the improvement of avoidance characteristics compared the driver-vehicle system with chassis control using information of it's own vehicle motion. From the view point of secondary vehicle safety, an emphasis is laid on the concept of mechanical wave. A dynamic fracture behavior such as car crash in high speed is often quite different from the static behavior. This fracture behavior due to the characteristic properties of the dynamic stress distribution in a material subjected to an impact force is investigated. These are the influence of microscopic defect near a crack-tip on the stress concentration, the interference effect of dynamic concentration between two parallel notches and the impact stress of cracked structural member. A tube forming is one of the key technology for the environmental issue compatible with safety. A feasibility study on " Off-set Roller Bending" for a tube forming of aluminum space frames is conducted to give a reasonable production technology for real use.

从车辆基本安全性的角度出发，提出了一些车辆底盘控制律，以稳定车辆运动，并通过计算机仿真验证了控制效果。它也验证了试验场使用的实验车辆。结果表明，利用轮胎横向力和纵向力对侧偏角和横摆角速度进行协同控制，可以显著提高车辆的稳定性和响应性。此外，在交通流中的紧急情况下，根据ITS中的道路环境的一些可能的信息，主动驾驶员辅助系统的可能性进行了研究。一个横向加速度模型下面的类型的辅助系统在回避车道变化显示出显着的效果，避免特性的改善相比，驾驶员-车辆系统与底盘控制，使用它自己的车辆运动的信息。从车辆二级安全性的角度出发，重点阐述了机械波的概念。汽车高速碰撞等动态断裂行为往往与静态断裂行为有很大不同。这种断裂行为，由于受到冲击力的材料中的动态应力分布的特性进行了研究。这些问题包括裂纹尖端的微观缺陷对应力集中的影响、两平行缺口间动态应力集中的干涉效应以及裂纹构件的冲击应力。管材成形是实现环保与安全相协调的关键技术之一。对“偏置辊弯法”用于铝合金网架管材成形的可行性进行了研究，提出了一种合理的生产工艺，供真实的使用。