Application and comparison of STPA and functional safety analysis in ACC system

Xianzhao Xia; Wenxia Xi; Hongpeng Li; Yang Wang

doi:10.1117/12.2623891

6 February 2022 Application and comparison of STPA and functional safety analysis in ACC system

Xianzhao Xia, Wenxia Xi, Hongpeng Li, Yang Wang

Proceedings Volume 12081, Sixth International Conference on Electromechanical Control Technology and Transportation (ICECTT 2021); 120813X (2022) https://doi.org/10.1117/12.2623891
Event: Sixth International Conference on Electromechanical Control Technology and Transportation (ICECTT 2021), 2021, Chongqing, China

Abstract

Autonomous vehicles are universally considered to be safety-critical systems, and failures in autonomous vehicles may have catastrophic consequences. Safety analysis and hazard identification of this system have become increasingly significant. However, difficulties are associated with analyzing appropriate safety requirements, including functional safety and the safety of the intended functionality (SOTIF). Functional safety analysis (HAZOP/HARA/FTA) and systems theoretic process analysis (STPA) is an efficient technique to identify potential failure hazards or safety requirements in autonomous driving system. In this paper, a technique integrating which STPA and functional safety analysis (HAZOP/HARA/FTA) is proposed to perform failure analysis and hazard identification in adaptive cruise control (ACC) system, which better identify potential failure and hazards, derive safety goals, ASIL level, safety constraints and safety requirements. Compared with functional safety analysis method, STPA can obtain the requirements of avoiding component failure, and it also focuses on component interactions and personnel decision error, which covers a wider range and provides more cognitive safety requirements for the design and analysis of intelligent driving system.

Citation Download Citation

Xianzhao Xia, Wenxia Xi, Hongpeng Li, and Yang Wang "Application and comparison of STPA and functional safety analysis in ACC system", Proc. SPIE 12081, Sixth International Conference on Electromechanical Control Technology and Transportation (ICECTT 2021), 120813X (6 February 2022); https://doi.org/10.1117/12.2623891

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KEYWORDS

Safety

Cameras

Control systems

Hazard analysis

Radar

Image transmission

Intelligence systems

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