A new type of omnidirectional wheelchair robot for walking support and power assistance

Up to now, many robotic aids for the elderly's walking support or the disabled's walking rehabilitation are reported, and numerous electrical-powered wheelchairs are developed. In this paper, a new kind of omnidirectional wheelchair typed robot is developed. The robot not only can accomplish the walking support or walking rehabilitation as the elderly or the disabled walk, but also can realize the power assistance for a caregiver when he/she pushes the robot to move. The basic structure of the robot is described, and the omnidirectional mobility of the robot is analyzed. Further, an admittance based human-machine interaction controller is introduced for power assistance. Experiments are implemented, and the experimental results show that the pushing force can be reduced and well controlled arbitrarily as designed. The development purposes of the robot for walking support and power assistance are achieved.

[1]  Spyros G. Tzafestas,et al.  The autonomous mobile robot SENARIO: a sensor aided intelligent navigation system for powered wheelchairs , 1997, IEEE Robotics Autom. Mag..

[2]  Akira Kakimoto,et al.  Development of power-assisted attendant-propelled wheelchair , 1997, Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136).

[3]  Masakatsu G. Fujie,et al.  Power-assisted walking support system for elderly , 1998, Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286).

[4]  Rory A. Cooper,et al.  Analysis of position and isometric joysticks for powered wheelchair driving , 2000, IEEE Transactions on Biomedical Engineering.

[5]  François G. Pin,et al.  A new family of omnidirectional and holonomic wheeled platforms for mobile robots , 1994, IEEE Trans. Robotics Autom..

[6]  Masayoshi Wada,et al.  Holonomic and omnidirectional vehicle with conventional tires , 1996, Proceedings of IEEE International Conference on Robotics and Automation.

[7]  Steven Dubowsky,et al.  Omni-Directional Mobility Using Active Split Offset Castors , 2004 .

[8]  Iwan Ulrich,et al.  The GuideCane-applying mobile robot technologies to assist the visually impaired , 2001, IEEE Trans. Syst. Man Cybern. Part A.

[9]  Toshiyuki Murakami,et al.  $v$–$\mathdot{\phi}$-Coordinate-Based Power-Assist Control of Electric Wheelchair for a Caregiver , 2008, IEEE Transactions on Industrial Electronics.

[10]  W. S. Newman.  Stability and Performance Limits of Interaction Controllers , 1992 .

[11]  Rolf Dieter Schraft,et al.  Care-O-bot II—Development of a Next Generation Robotic Home Assistant , 2004, Auton. Robots.

[12]  Steven Dubowsky,et al.  PAMM - a robotic aid to the elderly for mobility assistance and monitoring: a "helping-hand" for the elderly , 2000, Proceedings 2000 ICRA. Millennium Conference. IEEE International Conference on Robotics and Automation. Symposia Proceedings (Cat. No.00CH37065).

[13]  R.A. Cooper,et al.  Force Control Strategies While Driving Electric Powered Wheelchairs With Isometric and Movement-Sensing Joysticks , 2007, IEEE Transactions on Neural Systems and Rehabilitation Engineering.

[14]  Chi Zhu,et al.  Platform development of an omnidirectional mobile robot for the elderly's walking support and the caregiver's power assistance , 2009, 2009 IEEE International Conference on Robotics and Biomimetics (ROBIO).

[15]  R.A. Cooper,et al.  Electric powered wheelchairs , 2005, IEEE Control Systems.

[16]  Rory A. Cooper,et al.  Intelligent control of power wheelchairs , 1995 .

[17]  Kenneth M. Dawson-Howe,et al.  The application of robotics to a mobility aid for the elderly blind , 1998, Robotics Auton. Syst..

[18]  Holly A. Yanco.  Integrating Robotic Research: A Survey of Robotic Wheelchair Development , 1998 .

[19]  Kiyotaka Izumi,et al.  Construction of an Omnidirectional Mobile Robot Platform Based on Active Dual-Wheel Caster Mechanisms and Development of a Control Simulator , 2000, J. Intell. Robotic Syst..

[20]  Byung-Ju Yi,et al.  Command system and motion control for caster-type omni-directional mobile robot , 2005, 2005 IEEE/RSJ International Conference on Intelligent Robots and Systems.

[21]  Y. Hori,et al.  Proposal of human-friendly motion control: control design for power assistance tools and its application to wheelchair , 2004, 30th Annual Conference of IEEE Industrial Electronics Society, 2004. IECON 2004.

[22]  Steven Dubowsky,et al.  An Adaptive Shared Control System for an Intelligent Mobility Aid for the Elderly , 2003, Auton. Robots.

[23]  Helmut Hoyer.  The OMNI wheelchair , 1995 .