Systems Engineering and Electronics ›› 2022, Vol. 44 ›› Issue (9): 2986-2994.doi: 10.12305/j.issn.1001-506X.2022.09.35

• Reliability • Previous Articles    

Safety analysis for civil aircraft system based on STPA-ANP model

Yaohua LI1, Yuan GAO2,*   

  1. 1. School of Transportation Science and Engineering, Civil Aviation University of China, Tianjin 300300, China
    2. School of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China
  • Received:2021-10-22 Online:2022-09-01 Published:2022-09-09
  • Contact: Yuan GAO

Abstract:

With the increasing complexity of civil aircraft systems, traditional safety analysis methods can not fully meet the requirements of hazard identification. In order to effectively analyze and evaluate the safety of civil aircraft systems, a safety analysis method combining system-theory process analysis (STPA) and analytic network process (ANP) is proposed. STPA did not provide a complete process of crucial causal factors analysis and evaluation. By combining STPA with the key structure of ANP, the causal factors are analyzed and evaluated to obtain the crucial causal factors of the unsafe control actions. Taking a certain type of digital flight control system of civil aircraft as an example, it is proved that the model method can accurately and completely identify and analyze the potential unsafe control actions of the system and determine the crucial causal factors of the risks through formal modeling and simulation verification. It provides support for the security analysis of civil aircraft system.

Key words: safety analysis, system-theory process analysis (STPA), analytic network process (ANP), civil aircraft system, digital flight control system

CLC Number: 

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