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System Design Process in Compliance with ISO26262 Using Model-Based Design

Article of Honda R&D Technical Review Vol.26 No.2

Summary

It is necessary for automotive electrical and/or electronic systems to conform to the functional safety standard ISO 26262. ISO 26262 stipulates the implementation of Processes and the creation of Work Products in order to prove safety. However, ISO 26262 is based on a V-model development process, and the definition of structures and requirements at the design stage affects whether or not there is an increase in person-hours across the course of the development as a whole. The research discussed in this paper therefore focused on the system design stage, an upstream process, and formulated a system design process that conforms to ISO 26262 using model-based design as a means of controlling increases in person-hours. As a result, a process was formulated that makes it possible to implement processes conforming to ISO 26262 and create Work Products as a series of procedures, in addition to accurately defining structures and requirements by means of models.

Reference

(1) ISO26262: Road Vehicles – Functional Safety (2011)
(2) Murakami, M., Nomura, K., Hisaki, T., Kasahara, Y.: System Modeling Technology for Powerplant Control Systems, Honda R&D Technical Review, Vol. 22, No. 2, p. 101-108
(3) http://www.omgsysml.org/
(4) IEC61025: Fault tree analysis (FTA) (2006)
(5) IEC60812: Analysis techniques for system reliability – Procedure for failure mode and effects analysis (FMEA) (2006)
(6) IEC61882: Hazard and operability studies (HAZOP studies) – Application guide (2001)

Author (organization or company)

Hiroki SAGAMI(Automobile R&D Center)、Shinji HIRONAKA(Automobile R&D Center)、Ryoji MORI(Automobile R&D Center)、Takuyuki MUKAI(Automobile R&D Center)

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