一脚踏或两脚踏:再生制动系统是否提高了驾驶安全?
Jun Ma1, Xu Zhang2, Wenxia Xu2
1School of Automotive Studies, Tongji University, No. 4800, Cao-an Road, Shanghai 201804, China; College of Design and Innovation, Tongji University, No. 281, Fuxin Road, Shanghai 200092, China.
Accident; analysis and prevention
|November 22, 2024
概括
电动汽车的一脚踏驱动在低紧急情况下提高了安全性,但由于延迟制动,在高紧急情况下存在风险. 再生制动系统需要进一步改进,以获得最佳的安全性能.
科学领域:
- 汽车工程 汽车工程
- 人类因素和人体工程学
- 交通安全 交通安全
背景情况:
- 电动汽车 (EV) 使用再生制动系统,允许单脚踏驱动模式,仅使用快门加速和减速.
- 与单脚驾驶模式相关的安全影响和驾驶行为需要与传统双脚驾驶相比进行系统的调查.
研究的目的:
- 在各种紧急级别和前进方向下,分析和比较单脚踏和双脚踏模式之间的驾驶行为和安全性.
- 为了评估单脚踏模式对驾驶员感知,反应时间和制动性能的影响.
主要方法:
- 进行了一项驾驶模拟器研究,比较单脚踏和双脚踏模式.
- 参与者经历了各种情况,主要车辆减速率 (0.1g至0.75g) 和前进速度 (1.5s,2.5s) 不同.
- 关键指标包括感知时间,加速器释放时间,加速器到制动过渡时间,制动力,碰撞比率和碰撞时间 (TTC).
主要成果:
- 一脚踏模式没有改变驾驶员对制动事件的感知或反应;驾驶员调整了推进器释放以管理减速.
- 在单脚踏模式下观察到,加速器到车的过渡时间更长,车应用时间的不确定性增加.
- 一脚踏模式在低紧急情况下更安全,但在高紧急或不确定的条件下由于制动延迟而更不安全.
结论:
- 一脚踏车驾驶提供了方便与安全之间的权衡,特别是在动态的交通条件下.
- 研究结果表明,需要改进再生制动系统的设计,并整合先进的驾驶员辅助系统,如前方碰撞警告.
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