Estimation of foot orientation with respect to ground for an above knee robotic prosthesis

This paper presents a new application in the field of rehabilitation robotics. It is part of a research project which consists of the development of a robotic leg prosthesis for above knee amputees. This application aims at providing real-time estimates of the prosthesis foot orientation with respect to ground. An Extended Kalman Filter (EKF) is used in order to estimate the foot orientation based on gyroscope and infrared measurements. Moreover a constraint equation is also included in the EKF to guarantee the constraints in the estimates. Preliminary tests were performed in a platform built for the prosthesis prototype. The results discussed in this paper reveal the feasibility of such technique.

[1]  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..

[2]  Gerhard Schweitzer,et al.  Finite-state control of a trans-femoral (TF) prosthesis , 2002, IEEE Trans. Control. Syst. Technol..

[3]  C. T. Huang,et al.  Amputation: energy cost of ambulation. , 1979, Archives of physical medicine and rehabilitation.

[4]  Geovany de Araújo Borges,et al.  Development of a Myoelectric Controller based on Knee Angle Estimation , 2009, BIODEVICES.

[5]  Hugh Herr,et al.  User-adaptive control of a magnetorheological prosthetic knee , 2003, Ind. Robot.

[6]  Hugh M. Herr,et al.  Powered Ankle--Foot Prosthesis Improves Walking Metabolic Economy , 2009, IEEE Transactions on Robotics.

[7]  H. Herr,et al.  A Clinical Comparison of Variable-Damping and Mechanically Passive Prosthetic Knee Devices , 2005, American journal of physical medicine & rehabilitation.

[8]  Blake Hannaford,et al.  Development of Powered Prosthetic Lower Limb , 1998 .

[9]  John B. Moore,et al.  Optimal State Estimation , 2006 .

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

[11]  K. Koyanagi,et al.  Research and Development of the Intelligently-Controlled Prosthetic Ankle Joint , 2006, 2006 International Conference on Mechatronics and Automation.

[12]  Kikuo Fujimura,et al.  The intelligent ASIMO: system overview and integration , 2002, IEEE/RSJ International Conference on Intelligent Robots and Systems.

[13]  B. Anderson,et al.  Optimal Filtering , 1979, IEEE Transactions on Systems, Man, and Cybernetics.

[14]  Jun-Ho Oh,et al.  Development of an above knee prosthesis using MR damper and leg simulator , 2001, Proceedings 2001 ICRA. IEEE International Conference on Robotics and Automation (Cat. No.01CH37164).