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Requirements for Safe Robots: Measurements, Analysis and New Insights
The International Journal of Robotics Research, 10/30/09

Haddadin S et al. – The authors have analyzed the problem of the quasi–static constrained impact, which could pose a serious threat to the human even for low–inertia robots under certain circumstances. Finally, possible injuries relevant in robotics are summarized and systematically classified.

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Sami Haddadin, 11/01/09

Abstract—Physical human-robot interaction and cooperation has become a topic of increasing importance and of major focus in robotics research. An essential requirement of a robot designed for high mobility and direct interaction with human users or uncertain environments is that it must in no case pose a threat to the human. Until recently, quite few attempts were made to investigate real world threats via collision tests and use the outcome for considerably improving safety during physical human-robot interaction. In this paper, we give an overview of our systematic evaluation of safety in human-robot interaction, covering various aspects of the most significant injury mechanisms. In order to quantify the potential injury risk emanating from such a manipulator, impact tests with the DLR-Lightweight Robot III were carried out using standard automobile crash test facilities at the German Automobile Club (ADAC). Based on these tests, several industrial robots of different weight have been evaluated and the influence of robot mass and velocity investigated. The evaluated non-constrained impacts would only partially capture the nature of humanrobot safety. A possibly constrained environment and its effect on resulting human injuries are discussed and evaluated from different perspectives. Apart from such impact tests and simulations we have analyzed the problem of the quasi-static constrained impact, which could pose a serious threat to the human even for low-inertia robots under certain circumstances.

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Paediatric Robotic Surgery in Clinical Practice: A Cost Analysis
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