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

Alejandro D. Dominguez-Garcia, John G. Kassakian, Joel E. Schindall

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish (US)
Pages (from-to)505-514
Number of pages10
JournalReliability Engineering and System Safety
Issue number5
StatePublished - May 2006
Externally publishedYes


  • Failure mode and effects analysis (FMEA)
  • Markov model

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Industrial and Manufacturing Engineering


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