部件故障物理的应用,用于评估自动制动系统的可靠性
Debraj Banerjee1,2, Cher Ming Tan3,4,5, Nilim Akash Baruah1,2
1Center for Reliability Science and Technology, Chang Gung University, No.259, Wenhua 1st Rd., Guishan Dist, Taoyuan City, 333323, Taiwan.
Scientific reports
|November 21, 2024
概括
网络物理系统 (CPS) 的可靠性至关重要. 这项研究表明,自主制动系统中的晶振荡器降解非线性地增加了制动距离,突出了安全风险,并为可靠性设计提供了信息.
科学领域:
- 网络物理系统 (CPS)
- 可靠性工程可靠性工程
- 汽车安全 汽车安全
背景情况:
- 网络物理系统 (CPS) 要求对关键应用程序具有高可靠性.
- 在CPS中实施可靠性设计 (DfR) 需要了解组件故障物理.
- 自主制动系统代表了一个关键的CPS应用,其中组件可靠性至关重要.
研究的目的:
- 展示故障物理在网络物理系统 (CPS) 中设计可靠性 (DfR) 的应用.
- 研究水晶振荡器降解对自动制动系统性能和安全性的影响.
- 制定设计指南,以提高自动驾驶汽车制动系统的可靠性和安全性.
主要方法:
- 选择了一个自主制动系统作为网络物理系统 (CPS) 进行分析.
- 关注的组件是控制电路中的一个水晶振荡器.
- 将晶体振荡器置于温度循环中,模拟现实的环境条件以诱导降解.
主要成果:
- 观察到晶体振荡器的降解显著增加了车辆的停车距离.
- 确定了振荡器退化和停止距离增加之间的非线性关系.
- 证明了自动制动系统中元件退化产生的潜在安全危害.
结论:
- 在网络物理系统 (CPS) 中,组件故障物理对于可靠性设计 (DfR) 至关重要.
- 水晶振荡器的非线性降解性能关系需要仔细评估可靠性,以避免安全风险.
- 这些发现为提高自动驾驶汽车制动系统的可靠性和安全性提供了基本的设计指南.
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