Volume 22 Issue 5 - Publication Date: 1 May 2003
Safety Evaluation Method of Design and Control for Human-Care Robots
Koji Ikuta and Hideki Ishii Department of Micro System Engineering, School of Engineering, Nagoya University, Japan and Makoto Nokata Department of Robotics, Faculty of Science and Engineering, Ritsumeikan University, Japan
We propose the world's first general method of evaluating safety for human-care robots. In the case of a careless collision between a robot and a human, impact force and impact stress are chosen as evaluation measures, and a danger-index is defined to quantitatively evaluate the effectiveness of each safety strategy used for design and control. As a result, this proposed method allows us to assess the contribution of each safety strategy to the overall safety performance of a human-care robot. In addition, a new type of three-dimensional robot simulation system for danger evaluation is constructed on a PC. The system simplifies the danger evaluation of both the design and control of various types of human-care robots to quantify the effectiveness of various safety strategies.
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