Control Method of Walking Speed and Step Length for Hybrid Assistive Leg

For the person having functional disorder in their legs, we have developed Hybrid Assistive Leg(HAL). The purpose of this study is to propose the method to control HAL. In this method, according to human walking, the walking task is divided into phases. Keeping COG be controlled through all phases by manipulating ZMP, it would be possible to generate the stable motions without falling down which have several speeds and step lengths. Using computer simulation, we would confirm the effectiveness of this method and the ability for applying this method to the rehabilitation program for handicapped people.

[1]  Tatsuo Arai,et al.  Mobile manipulation of humanoids-real-time control based on manipulability and stability , 2000, Proceedings 2000 ICRA. Millennium Conference. IEEE International Conference on Robotics and Automation. Symposia Proceedings (Cat. No.00CH37065).

[2]  Yoshiyuki Sankai,et al.  Predictive control estimating operator's intention for stepping-up motion by exo-skeleton type power assist system HAL , 2001, Proceedings 2001 IEEE/RSJ International Conference on Intelligent Robots and Systems. Expanding the Societal Role of Robotics in the the Next Millennium (Cat. No.01CH37180).

[3]  M. Vukobratovic,et al.  Biped Locomotion , 1990 .

[4]  T. Takenaka,et al.  The development of Honda humanoid robot , 1998, Proceedings. 1998 IEEE International Conference on Robotics and Automation (Cat. No.98CH36146).

[5]  Shuuji Kajita,et al.  Dynamic Control of Fast Passing Over Stairs by a Biped Type Leg-wheeled Robot Considering the Continuity of Dynamic Trajectories , 2000 .

[6]  Miomir Vukobratović,et al.  Biped Locomotion: Dynamics, Stability, Control and Application , 1990 .