6. Comparison and Combination of Hazard and Operability Analysis and System Theoretic Process Analysis Applied to Functional Safety—A Case Study of Traffic Jam Pilot System
DOI:
Date of Submission: 09th July 2023 Revised: 23rd August 2023 Accepted: 29th August 2023
ABSTRACT
With the continuous development of autonomous driving and vehicle electrification, vehicle functions have become increasingly comprehensive, while the electronic and electrical systems inside vehicles have become increasingly complex. The interaction between systems has become increasingly frequent and ensuring the safety of autonomous vehicles has become a major concern. Functional safety is designed to address safety issues caused by failures in the electronic and electrical systems of vehicles. Hazard analysis is a critical step in the functional safety development process. In this study, Hazard and Operability Analysis (HAZOP) and System Theoretic Process Analysis (STPA) are respectively used to carry out functional safety vehicle hazard analysis with an open automatic driving system Traffic Jam Pilot (TJP) as an example, and the analysis results are compared. The comparison shows that the two methods can obtain the same vehicle hazard results in the functional safety analysis of automatic driving system, but each has its advantages and limitations in the process. Based on the strengths and weaknesses of both methods, a idea approach that combines the two methods is proposed.
Key words/Index Terms
Functional Safety, HAZOP, ISO 26262, STPA
Cite this paper
Lei He, Feng Ye, Xiucai Zhang and Zhongju Di. (2023). Comparison and Combination of Hazard and Operability Analysis and System Theoretic Process Analysis Applied to Functional Safety- A Case Study of Traffic Jam Pilot System. International Journal of Applied Engineering and Technology 5(3), pp. 41-50.
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