Design and evaluation of a 7-DOF cable-driven upper limb exoskeleton
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This paper presents a seven degrees of freedom cable-driven upper limb exoskeleton (CABXLexo-7), which is compact, lightweight, and comfortable for post-stroke patients. To achieve the compactness of exoskeleton, two types of cable-driven differential mechanisms were designed. The cable-conduit mechanisms were applied to transmit the power of motors mounted on the backboard to the corresponding joints, then the whole weight of the exoskeleton could be light to ensure a comfortable motion assistance. In the course of experiments, the surface electromyography signals of major muscles related with the movements of upper limb were collected to evaluate the assistant ability of exoskeleton. The experimental results showed that the activation levels of corresponding muscles were reduced by using the seven degrees of freedom cable-driven upper limb exoskeleton in the course of rehabilitation, and it demonstrated that the exoskeleton can provide effective movements assistance to the post-stroke patients.
KeywordsCable-driven Upper limb exoskeleton Differential mechanism Cable-conduit sEMG
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- G. Florian, N. Georgios and G. Alireza, Closed-loop task difficulty adaptation during virtual reality reach-to-grasp training assisted with an exoskeleton for stroke rehabilitation, Frontiers in Neuroscience, 10 (2016) 1–13.Google Scholar
- F. D. Kyle, P. A. Utku and M. K. Marcia, A robotic exoskeleton for rehabilitation and assessment of the upper limb following incomplete spinal cord injury, IEEE International Conference on Robotics and Automation (ICRA) (2015) 4960–4966.Google Scholar
- U. Keller, S. Schölch, U. Albisser, C. Rudhe, A. Curt, R. Riener and V. K. Marganska, Robot-assisted arm assessments in spinal cord injured patients: A consideration of concept study, Plos One, 10 (5) (2015) 1–24.Google Scholar
- J. Klein, S. Spencer, J. Allington and J. E. Bobrow, Optimization of a parallel shoulder mechanism to achieve a highforce, low-mass, robotic-arm exoskeleton, IEEE Transactions on Robotics, 26 (4) (2010) 710–715.Google Scholar
- P. A. Utku, S. Fabrizio and E. Andrew, Design and validation of the RiceWrist-S exoskeleton for robotic rehabilitation after incomplete spinal cord injury, Robotica, 32 (8) (2014) 415–1431.Google Scholar
- Y. Y. Chen, G. Li, Y. H. Zhu, J. Zhao and H. G. Cai, Design of a 6-DOF upper limb rehabilitation exoskeleton with parallel actuated joints, Bio-Medical Materials and Engineering, 24 (6) (2014) 2527–2535.Google Scholar
- S. J. Ball, I. E. Brown and S. H. Scott, MEDARM: A rehabilitation robot with 5DOF at the shoulder complex, IEEE/ASME International Conference on Advanced Intelligent Mechatronics (2007) 2511–2516.Google Scholar
- E. Pirondini, M. Coscia, S. Marcheschi, G. Roas, F. Salsedo and S. Micera, Evaluation of the effects of the arm light exoskeleton on movement execution and muscle activities: A pilot study on healthy subjects, Journal of NeuroEngineering and Rehabilitation, 13 (9) (2016) 1–21.Google Scholar
- J. Yang and D. A. Winter, Electromyographic amplitude normalization methods: Improving their sensitivity as diagnostic tools in gait analysis, Archives of Physical Medicine and Rehabilitation, 65 (1984) 517–521.Google Scholar