Hazard Analysis for Safety-critical Systems Using SOFL

Azma, Abdullah and Liu, Shaoying (2013) Hazard Analysis for Safety-critical Systems Using SOFL. In: 2013 IEEE Symposium on Computational Intelligence for Engineering Solutions (CIES 2013), 16 April 2013 , Singapore. pp. 133-140..

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Abstract

The most important mechanism for improving the safety of a system is to identify the hazard state of the system as it has the potential to cause an unexpected, unplanned or undesired event or a series of events. A hazard that occurs in a system could inevitably lead to an accident (loss event), which could result in an injury or illness or even loss of a human life, and the hazard could also have a negative impact on the environment. An approach in hazard analysis is proposed in this paper in order to avoid hazard from happening in a safety-critical system. The approach consists of three steps: (1) deriving hazards from safety properties, (2) using Fault Tree Analysis (FTA) to analyze the possible causes of each hazard, and (3) converting each minimal cut-set of FTA into a formal property in terms of variables used in the formal specification. A case study based on an Auto-cruise Control (ACC) system for vehicles is used as an example to illustrate the process.

Item Type: Conference or Workshop Item (Speech)
Uncontrolled Keywords: Hazard; Hazard identification; Hazard analysis; Safety-critical systems
Subjects: Q Science > QA Mathematics > QA76 Computer software
Faculty/Division: Faculty of Computer System And Software Engineering
Depositing User: Noorul Farina Arifin
Date Deposited: 25 Apr 2013 05:01
Last Modified: 29 Mar 2018 06:39
URI: http://umpir.ump.edu.my/id/eprint/3612
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