The role of the robot mass and velocity in physical human-robot interaction - Part I: Non-constrained blunt impacts

The desired coexistence of robotic systems and humans in the same physical domain, by sharing their workspace and actually cooperating in a physical manner, poses the very fundamental problem of ensuring safety to the user. In this paper we will show the influence of robot mass and velocity during blunt unconstrained impacts with humans. Several robots with weights ranging from 15-2500 kg are impacted at different velocities with a mechanical human head mockup. This is used to measure the so-called head injury criterion, mainly a measure for brain injury. Apart from injuries indicated by this criterion and a detailed analysis of chest impacts we point out that e.g. fractures of facial bones can occur during collisions at typical robot velocities. Therefore, this injury mechanism which is more probable in robotics is evaluated in detail.

[1]  Alexander Zelinsky,et al.  Quantitative Safety Guarantees for Physical Human-Robot Interaction , 2003, Int. J. Robotics Res..

[2]  J. Versace.  A Review of the Severity Index , 1971 .

[3]  C. K. Kroell,et al.  Impact Response of the Human Thorax , 1973 .

[4]  T. Asfour,et al.  ARMAR-III : A HUMANOID PLATFORM FOR PERCEPTION-ACTION INTEGRATION , 2006 .

[5]  Erik G. Takhounts,et al.  DEVELOPMENT OF IMPROVED INJURY CRITERIA FOR THE ASSESSMENT OF ADVANCED AUTOMOTIVE RESTRAINT SYSTEMS - II , 1999 .

[6]  Dimitrios Kallieris,et al.  RESPONSE AND INJURY SEVERITY OF THE HEAD-NECK UNIT DURING A LOW VELOCITY HEAD IMPACT , 1997 .

[7]  Joshua Mehling,et al.  Centaur: NASA's Mobile Humanoid Designed for Field Work , 2007, Proceedings 2007 IEEE International Conference on Robotics and Automation.

[8]  Oussama Khatib,et al.  Development and Control of a Holonomic Mobile Robot for Mobile Manipulation Tasks , 2000, Int. J. Robotics Res..

[9]  C. Y. Warner,et al.  Force/deflection and fracture characteristics of the temporo-parietal region of the human head , 1991 .

[10]  U. Frese,et al.  Foul 2050: thoughts on physical interaction in human-robot soccer , 2007, 2007 IEEE/RSJ International Conference on Intelligent Robots and Systems.

[11]  John M. Cavanaugh,et al.  Facial impact tolerance and response , 1986 .

[12]  Christoph Borst,et al.  The Robutler: Towards Service Robots for the Human Environment , 2005 .

[13]  Alin Albu-Schäffer,et al.  Safety Evaluation of Physical Human-Robot Interaction via Crash-Testing , 2007, Robotics: Science and Systems.

[14]  G. Hirzinger,et al.  A new variable stiffness design: Matching requirements of the next robot generation , 2008, 2008 IEEE International Conference on Robotics and Automation.

[15]  James H. McElhaney,et al.  Biomechanical Aspects of Head Injury , 1973 .

[16]  Alan M. Nahum,et al.  Facial impact response: a comparison of the Hybrid III dummy and human cadaver , 1988 .

[17]  Antonio Bicchi,et al.  Fast and "soft-arm" tactics [robot arm design] , 2004, IEEE Robotics & Automation Magazine.

[18]  Alessandro De Luca,et al.  Collision Detection and Safe Reaction with the DLR-III Lightweight Manipulator Arm , 2006, 2006 IEEE/RSJ International Conference on Intelligent Robots and Systems.

[19]  Alin Albu-Schäffer,et al.  Safe Physical Human-Robot Interaction: Measurements, Analysis and New Insights , 2007, ISRR.

[20]  Alan M. Nahum,et al.  Impact tolerance and response of the human thorax II , 1971 .

[21]  G. Hirzinger,et al.  Approaching Asimov ’ s 1 st Law : The ” Impact ” of the Robot ’ s Weight Class , 2007 .

[22]  V. Rich.  Personal communication , 1989, Nature.

[23]  P. F. Gloyns,et al.  EUROPEAN NEW CAR ASSESSMENT PROGRAMME (EuroNCAP) ASSESSMENT PROTOCOL AND BIOMECHANICAL LIMITS , 1999 .

[24]  D. Viano,et al.  Role of impact velocity and chest compression in thoracic injury. , 1983, Aviation, space, and environmental medicine.

[25]  Kazuo Tanie,et al.  Human Safety Mechanisms of Human-Friendly Robots: Passive Viscoelastic Trunk and Passively Movable Base , 2000, Int. J. Robotics Res..

[26]  Patrick van der Smagt,et al.  Antagonism for a Highly Anthropomorphic Hand–Arm System , 2008, Adv. Robotics.

[27]  D. C. Schneider,et al.  Impact Studies of Facial Bones and Skull , 1972 .

[28]  L. M. Patrick,et al.  Impact Force-Deflection the Human Thorax , 1981 .

[29]  S Tylko,et al.  Toward a comprehensive biomechanical injury cost model. , 1994, Accident; analysis and prevention.

[30]  D. Viano,et al.  The Viscous Criterion - Bases and Applications of an Injury Severity Index for Soft Tissues , 1986 .

[31]  Oliver Brock,et al.  The UMass Mobile Manipulator UMan: An Experimental Platform for Autonomous Mobile Manipulation , 2006 .

[32]  Oussama Khatib,et al.  Inertial Properties in Robotic Manipulation: An Object-Level Framework , 1995, Int. J. Robotics Res..

[33]  Tamim Asfour,et al.  ARMAR-III: An Integrated Humanoid Platform for Sensory-Motor Control , 2006, 2006 6th IEEE-RAS International Conference on Humanoid Robots.

[34]  Koji Ikuta,et al.  Safety Evaluation Method of Design and Control for Human-Care Robots , 2003, Int. J. Robotics Res..

[35]  G. Hirzinger,et al.  Approaching Asimov's 1st Law , 2007 .

[36]  G A Ryan.  DEVELOPMENT OF A METHOD OF ESTIMATING THE COSTS OF INJURIES PREDICTED BY ANCAP TESTING IN AUSTRALIA , 1998 .

[37]  Michael R. Zinn,et al.  A New Actuation Approach for Human Friendly Robot Design , 2004, Int. J. Robotics Res..