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A Fault Tolerant Time Interval Process for Functional Safety Development
Technical Paper
2019-01-0110
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
During development of complex automotive technologies, a significant engineering effort is often dedicated to ensuring the safe performance of these systems. An important aspect to consider when assessing the viability of different safety designs or strategies is the time period from the occurrence of a fault to the violation of a Safety Goal (SG). This time period is commonly referred to as the Fault Tolerant Time Interval (FTTI). In Automotive Safety, ISO 26262 [1] calls for the identification and appropriate partitioning of the FTTI, however very little guidance is provided on how to do this. This paper presents a process, covering the entire safety development lifecycle, for the identification of timing constraints and the development of associated requirements necessary to prevent Safety Goal violations.
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Citation
Denomme, D., Hooson, S., and Winkelman, J., "A Fault Tolerant Time Interval Process for Functional Safety Development," SAE Technical Paper 2019-01-0110, 2019, https://doi.org/10.4271/2019-01-0110.Also In
References
- 2018