A Comparative Study of STPA Hierarchical Structures in Risk Analysis: The case of a Complex Multi-Robot Mobile System

Youcef Zennir , Chaima Bensaci , Denis Pomorski (1, 2)

1 Université de Lille
2 CRIStAL - Centre de Recherche en Informatique, Signal et Automatique de Lille - UMR 9189

Autonomous multi-robot systems are among the most complex systems to control, especially when those robots navigate in fully hazardous and dynamic environments such as chemical analysis laboratories which include dangerous and harmful products (poisonous, flammable, explosive...). This paper presents an approach for systems-complex and theoretic safety assessment, also it considers their coordinating, cooperating and collaborating using different control architectures (centralized, hierarchical and modified hierarchical). We classified at first those control architectures according to their properties using Bowtie analysis method, and then we used a systems-theoretic hazard analysis technique (STPA) to identify the potential safety hazard scenarios and their causal factors.

Mots clés: Risk Analysis; STAMP Method; STPA Method; Bowtie method; Multi-Robot Mobile System; Control Architectures

Domaines: Sciences de l'ingénieur [physics]

Youcef Zennir, Chaima Bensaci, Denis Pomorski. A Comparative Study of STPA Hierarchical Structures in Risk Analysis: The case of a Complex Multi-Robot Mobile System. WSEAS Transactions on Computers, inPress. ⟨hal-03508542⟩