Kinematic Analysis of an Assistive Robotic Leg for Hemiplegic and Hemiparetic Patients

Authors: M.R. Safizadeh, M. Hussein, K. F. Samat, M.S. Che Kob, M.S. Yaacob, M.Z. Md Zain

Abstract:

The aim of this paper is to present the kinematic analysis and mechanism design of an assistive robotic leg for hemiplegic and hemiparetic patients. In this work, the priority is to design and develop the lightweight, effective and single driver mechanism on the basis of experimental hip and knee angles- data for walking speed of 1 km/h. A mechanism of cam-follower with three links is suggested for this purpose. The kinematic analysis is carried out and analysed using commercialized MATLAB software based on the prototype-s links sizes and kinematic relationships. In order to verify the kinematic analysis of the prototype, kinematic analysis data are compared with the experimental data. A good agreement between them proves that the anthropomorphic design of the lower extremity exoskeleton follows the human walking gait.

Keywords: Kinematic analysis, assistive robotic leg, lower extremity exoskeleton, cam-follower mechanism.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1075390

References:

1] Tapus, A. & Matarić, M. J., "User Personality Matching with a Hands- Off Robot for Post-stroke Rehabilitation Therapy," in Journal of Experimental Robotics vol. 39, ed Heidelberg: Springer Berlin, 2008, pp. 165-175.
[2] Moonhee, L., Matheson, R. & Hussein, A. A, "Design Issues for Therapeutic Robot Systems: Results from a Survey of Physiotherapists," Journal of Intelligent and Robotic Systems, vol. 42, pp. 239-252, 2005.
[3] Kao, P.C, "Motor adaptation during dorsiflexion-assisted walking with a powered orthosis," Journal of Gait and Posture, vol. 29, pp. 230-236, 2009.
[4] Sawicki, G. S., Domingo, A. & Ferris, D. P, "The Effects of Powered Ankle-Foot Orthoses on Joint Kinematics and Muscle Activation During Walking in Individuals With Incomplete spinal cord injury," Journal of NeuroEngineering and Rehabilitation, vol. 3, pp. 1-17, 2006.
[5] Kawamoto, H. & Sankai, Y., "Power Assist System HAL-3 for Gait Disorder Person," in Computers Helping People with Special Needs. vol. 2398/2002, ed Heidelberg: Springer Berlin, 2002, pp. 19-29.
[6] Kawainoto, H., Lee, S., Kanbe, S. & Sankai, Y., "Power Assist Method for HAL-3 Using EMG-Based Feedback Controller," in Proceedings of the IEEE International Conference on Systems, Man, and Cybernetics, 2003, pp. 1648-1653.
[7] Banala, S. K., Kulpe, A. & Agrawal, S. K., "A Powered Leg Orthosis for Gait Rehabilitation of Motor-Impaired Patients," in IEEE International Conference on Robotics and Automation, Roma, Italy, 2007, pp. 4140-4145.
[8] Kenta, S., Gouji, M., Hiroaki, K., Yasuhisa, H. & Yoshiyuki, S., "Intention-Based Walking Support for Paraplegia Patients with Robot Suit HAL," Advanced Robotics, vol. 29, pp. 1441-1469, 2007.
[9] Zoss, A., Kazerooni & Chu, A., "On the Mechanical Design of the Berkeley Lower Extremity Exoskeleton (BLEEX)," in IEEE/RSJ International Conference on Intelligent Robots and Systems, 2005, pp. 3132-3139.
[10] Ferris, D. P., Gordon, K. E., Sawicki, G. S. & Peethambaran, A."An Improved Powered Ankle-Foot Orthosis Using Proportional Myoelectric Control," Journal of Gait and Posture, vol. 23, pp. 425- 428, 2005.
[11] Ferris, D. P., Sawicki, G. S. & Domingo, A."Powered lower limb orthoses for gait rehabilitation," Top Spinal Cord Inj Rehabil, vol. 11, pp. 34-39, 2005.
[12] Gordona, K. E., Sawicki, G. S. & Ferrisa, D. P."Mechanical Performance of Artificial Pneumatic Muscles to Power an Ankle-Foot Orthosis," Journal of Biomechanics, vol. 39, pp. 1832-1841, 2006.
[13] G. S. Sawicki and D. P. Ferris, "A Pneumatically Powered Knee- Ankle-Foot orthosis (KAFO) With Myoelectric Activation and Inhibition," Journal of NeuroEngineering and Rehabilitation, vol. 6, pp. 1-16, 2009.
[14] Sawicki, G. S., Gordon, K. E. & Ferris, D. P."Powered Lower Limb Orthoses: Applications in Motor Adaptation and Rehabilitation," in 9th International Conference on Rehabilitation Robotics, Chicago, IL, USA, 2005, pp. 206-211.
[15] Belforte, G., Gastaldi, L. & Sorli, M., "Pneumatic Active Gait Orthosis," Journal of Mechatronics, vol. 11, pp. 301-323, 2001.
[16] Ruthenberg, B. J., Wasylewski, N. A. & Beard, J. E., "An Experimental Device for Investigating the Force and Power Requirements of a Powered Gait Orthosis," Journal of Rehabilitation Research and Development, vol. 34, pp. 203-213, 1997.
[17] Jerry, E. P., Benjamin, T. K. & Christopher, J. M., "The Roboknee: An Exoskleton for Enhancing Strength and Enharance During Walking," in International Conference on Robotic & Automation, New Orleans, 2004, pp. 2430-2435.
[18] Meriam, J. L., Kraige, L. G. & Palm, W. J., Engineering Mechanics: Dynamics, 5 ed.: John Wiley, 2001.