设计和验证一个带有集成传感器的主动头靠系统,用于后端碰撞场景
Alexandru Ionut Radu1, Bogdan Adrian Tolea2, Horia Beles2
1Department of Automotive and Transport, Faculty of Mechanical Engineering, Transilvania University of Brasov, 500036 Brasov, Romania.
Sensors (Basel, Switzerland)
|July 30, 2025
概括
这项研究开发了一种先进的多体模拟模型,用于后端碰撞,改进了主动头靠系统. 经过验证的模型准确地预测了乘客动力学,提高了汽车安全.
科学领域:
- 汽车工程 汽车工程
- 生物力学 生物力学
- 计算力学 计算力学 计算力学
背景情况:
- 背后碰撞带来了很大的风险,尤其是鞭伤害.
- 精确模拟乘客动力学对于先进的汽车安全系统至关重要.
- 现有的模型可能无法完全捕捉到主动安全特征的动态.
研究的目的:
- 为后端碰撞场景提供一个增强的多体模拟模型.
- 为了整合集成的主动头托机制和基于传感器的激活逻辑.
- 为了验证模型对乘客动力学和头部加速的预测准确性.
主要方法:
- 使用Simscape Multibody开发了一个增强的多体模拟模型.
- 集成的详细车辆结构,悬架,限制系统和乘客生物力学.
- 与受控实验碰撞测试对模型进行验证,重点关注接触力和执行器响应.
主要成果:
- 获得了4.19 m/s2的根平均平方误差 (RMSE) 头部加速.
- 在验证测试中获得了0.71%的平均绝对百分比误差 (MAPE).
- 证明了乘客动力学和头部加速配置文件的准确复制.
结论:
- 增强的多体模型准确地预测了乘客在后方碰撞中的反应.
- 集成的传感器-执行器系统对于提高乘客安全至关重要.
- 该模型作为开发智能汽车安全技术的灵活平台.
相关概念视频
Elastic Collisions: Introduction
An elastic collision is one that conserves both internal kinetic energy and momentum. Internal kinetic energy is the sum of the kinetic energies of the objects in a system. Truly elastic collisions can only be achieved with subatomic particles, such as electrons striking nuclei. Macroscopic collisions can be very nearly, but not quite, elastic, as some kinetic energy is always converted into other forms of energy such as heat transfer due to friction and sound. An example of a nearly...
Elastic Collisions: Case Study
Elastic collision of a system demands conservation of both momentum and kinetic energy. To solve problems involving one-dimensional elastic collisions between two objects, the equations for conservation of momentum and conservation of internal kinetic energy can be used. For the two objects, the sum of momentum before the collision equals the total momentum after the collision. An elastic collision conserves internal kinetic energy, and so the sum of kinetic energies before the collision equals...
PD Controller: Design
In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...


