乘用车自动紧急制动响应的特点在IIHS正面碰撞预防计划中进行了评估
David G Kidd1, Daniel Perez-Rapela1, Jessica S Jermakian1
1Insurance Institute for Highway Safety, United States.
Accident; analysis and prevention
|June 10, 2023
概括
高级的正面防撞系统 (FCP),包括自动紧急制动 (AEB),可以显示更早的警告和制动,性能随速度增加而增加. 这些发现有助于未来的安全模拟.
科学领域:
- 道路安全工程工程 道路安全工程
- 车辆动力学 车辆动力学
- 汽车安全系统 汽车安全系统
背景情况:
- 关于正面防撞系统 (FCP) 的现实性能,特别是自动紧急制动 (AEB) 的数据有限.
- 了解FCP系统干预对于模拟碰撞场景中的潜在安全益处至关重要.
研究的目的:
- 描述高级和基本/高级FCP系统之间的性能差异.
- 根据受控测试数据,以更高的速度估计FCP系统性能.
- 为改善安全模拟假设提供数据.
主要方法:
- 分析了保险公路安全研究所 (IIHS) 在20公里/小时和40公里/小时的3231次FCP测试.
- 前方碰撞预警 (FCW) 和AEB碰撞时间 (TTC),减速和冲动的建模.
- 使用线性混合效应模型估计50,60和70公里/小时的性能.
主要成果:
- 与基本/高级系统相比,优级的FCP系统表现出更早的FCW和AEB激活和更高的减速率.
- 评级级别之间的性能差异随着测试速度的增加而增加.
- 模型显示TTC和较高速度减速的合理预测准确度.
结论:
- 配备超级级FCP系统的车辆通过更早的干预和更有效的制动提供了更高的安全性,特别是在更高的速度下.
- 开发的模型可以为未来模拟AEB在避免碰撞方面的性能提供信息.
- 这项研究突出了有效的FCP系统用于预防事故的关键特征.
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