Hazard Analysis in Object Oriented Design of Dependable Systems
DSN '01 Proceedings of the 2001 International Conference on Dependable Systems and Networks (formerly: FTCS)
Safety and Security Analysis of Object-Oriented Models
SAFECOMP '02 Proceedings of the 21st International Conference on Computer Safety, Reliability and Security
Deriving Safety Requirements Using Scenarios
RE '01 Proceedings of the Fifth IEEE International Symposium on Requirements Engineering
Basic Concepts and Taxonomy of Dependable and Secure Computing
IEEE Transactions on Dependable and Secure Computing
Human Factors Methods: A Practical Guide for Engineering And Design
Human Factors Methods: A Practical Guide for Engineering And Design
Building safer robots: Safety driven control
International Journal of Robotics Research
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Safety is a major concern for robots that interact physically with humans. We propose a risk analysis method based on deviation analysis of system usage scenarios that allows the identification of major risks. Scenarios are described with the common Unified Modeling Language (UML), and risk analysis is performed with the guideword-based collaborative method HAZOP (HAZard OP-erability). We adapt HAZOP attributes and guidewords for generic interpretation of UML use-case and sequence diagrams describing human-robot interactions. This approach has been systematically applied for the analysis of two quite different robots working in a human environment: a mobile manipulator and a robotic strolling assistant. When applied, the method gave conclusive evidence that the modeled systems were not safe. A CASE tool to support this method is also presented.