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Reliability evaluation of the power supply of an electrical power net for safety-relevant applications

机译：安全相关应用的电网电源可靠性评估

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摘要

In this paper, we introduce a methodology for the dependability analysis of new automotive safety-relevant systems. With the introduction of safety-relevant electronic systems in cars, it is necessary to carry out a thorough dependability analysis of those systems to fully understand and quantify the failure mechanisms in order to improve the design. Several system level FMEAs are used to identify the different failure modes of the system and, a Markov model is constructed to quantify their probability of occurrence. A new power net architecture with application to new safety-relevant automotive systems, such as Steer-by-Wire or Brake-by-Wire, is used as a case study. For these safety-relevant loads, loss of electric power supply means loss of control of the vehicle. It is, therefore, necessary and critical to develop a highly dependable power net to ensure power to these loads under all circumstances.
机译：在本文中，我们介绍了一种用于新汽车安全相关系统的可靠性分析的方法。随着汽车中与安全相关的电子系统的引入，有必要对这些系统进行彻底的可靠性分析，以充分理解和量化故障机制，从而改善设计。几个系统级别的FMEA用于识别系统的不同故障模式，并构造了一个马尔可夫模型来量化它们的发生概率。作为案例研究，使用了一种新的电力网络架构，该架构将应用于新的与安全性相关的汽车系统，例如线控转向或线控制动。对于这些与安全相关的负载，失去电源意味着失去对车辆的控制。因此，开发高度可靠的电源网络以确保在所有情况下为这些负载供电都是必要且至关重要的。

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