A push-recovery method for walking biped robot based on 3-D flywheel model

Bipedal robot has many advantages to locomotion in complex environments that wheeled robot cannot achieve. However, because of biped robot's complicated mechanism and the naturally unstable system, it is very susceptible to disturbance from the environment and humans in comparison with wheeled robots. Therefore, the prime task for biped robot walking is to maintain dynamic balance and recover from the perturbation when it occurs unexpectedly. In our previous work, the strategy in the sagittal plane has been studied. While the lateral one has not been considered yet. The objective of this paper is to deal with perturbation in lateral plane, and combine them to a planar direction strategy. Various recovery approaches are utilized to stabilize the biped robot while walking. The methods take advantage of angular momentum by quickly swinging leg or rotating trunk. Also, it is determined in the way as human beings encounter pushing force. The proposed method has been successfully implemented on the biped robot developed in our iCeiRA laboratory.

[1]  Pierre-Brice Wieber,et al.  Trajectory Free Linear Model Predictive Control for Stable Walking in the Presence of Strong Perturbations , 2006, 2006 6th IEEE-RAS International Conference on Humanoid Robots.

[2]  Miomir Vukobratovic,et al.  Zero-Moment Point - Thirty Five Years of its Life , 2004, Int. J. Humanoid Robotics.

[3]  Jerry E. Pratt,et al.  Learning Capture Points for humanoid push recovery , 2007, 2007 7th IEEE-RAS International Conference on Humanoid Robots.

[4]  Benjamin J. Stephens,et al.  Humanoid push recovery , 2007, 2007 7th IEEE-RAS International Conference on Humanoid Robots.

[5]  Kazuhito Yokoi,et al.  Biped walking pattern generation by using preview control of zero-moment point , 2003, 2003 IEEE International Conference on Robotics and Automation (Cat. No.03CH37422).

[6]  Sergey V. Drakunov,et al.  Capture Point: A Step toward Humanoid Push Recovery , 2006, 2006 6th IEEE-RAS International Conference on Humanoid Robots.

[7]  Ren C. Luo,et al.  Biped robot push and recovery using flywheel model based walking perturbation counteraction , 2013, 2013 13th IEEE-RAS International Conference on Humanoid Robots (Humanoids).

[8]  Alin Albu-Schäffer,et al.  Overview of the torque-controlled humanoid robot TORO , 2014, 2014 IEEE-RAS International Conference on Humanoid Robots.

[9]  Christopher G. Atkeson,et al.  Push Recovery by stepping for humanoid robots with force controlled joints , 2010, 2010 10th IEEE-RAS International Conference on Humanoid Robots.

[10]  Kyung Shik Roh,et al.  Towards natural bipedal walking: Virtual gravity compensation and capture point control , 2012, 2012 IEEE/RSJ International Conference on Intelligent Robots and Systems.

[11]  Jun Morimoto,et al.  Towards balance recovery control for lower body exoskeleton robots with Variable Stiffness Actuators: Spring-loaded flywheel model , 2015, 2015 IEEE International Conference on Robotics and Automation (ICRA).

[12]  Jun-Ho Oh,et al.  Mechanical design of humanoid robot platform KHR-3 (KAIST Humanoid Robot 3: HUBO) , 2005, 5th IEEE-RAS International Conference on Humanoid Robots, 2005..

[13]  Hooshang Hemami,et al.  Nonlinear feedback in simple locomotion systems , 1976 .

[14]  Mitsuharu Morisawa,et al.  Humanoid robot HRP-4 - Humanoid robotics platform with lightweight and slim body , 2011, 2011 IEEE/RSJ International Conference on Intelligent Robots and Systems.

[15]  Atsuo Takanishi,et al.  Development of a new humanoid robot WABIAN-2 , 2006, Proceedings 2006 IEEE International Conference on Robotics and Automation, 2006. ICRA 2006..

[16]  Pierre-Brice Wieber,et al.  Online walking gait generation with adaptive foot positioning through Linear Model Predictive control , 2008, 2008 IEEE/RSJ International Conference on Intelligent Robots and Systems.

[17]  Kouhei Ohnishi,et al.  Biped Walking Pattern Generation by Using Preview Control Based on Three-Mass Model , 2013, IEEE Transactions on Industrial Electronics.

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