Volume 15, Issue 4 (2015)                   Modares Mechanical Engineering 2015, 15(4): 58-66 | Back to browse issues page

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Kardan M H, Irani Rahaghi M. Robot-Borne PLC-Based Control System Used for Lower Limbs Rehabilitation. Modares Mechanical Engineering. 2015; 15 (4) :58-66
URL: http://journals.modares.ac.ir/article-15-5405-en.html
1- Department of Mechatronics Engineering, Kashan Branch, Islamic Azad University, Kashan, Iran
2- Asisstant Professor, Department of Solid Mechanics, Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran
Abstract:   (3810 Views)
The purpose of this study, control and monitoring of a rehabilitation robot with two degrees of freedom (2-DOF) for rehabilitation of the lower limbs of patients with loss of ability for movement due to injury, disease, stroke or surgical operations. After determining the movements, that is included flexion-extension movements of the knee and hip joints, the performance of the mechanism was investigated using dynamic analysis and simulation. Then, a programmable logic controller (PLC) was employed to control the robot performance. Finally, the accuracy of PLC program was guaranteed by monitoring the robot. Passive, assistive and resistive exercises were considered in programming the controller. In assistive exercises, the forces needed by the patient to perform the movements were actually set automatically by using the feedback data provided by the patient's forces. In addition, to perform the resistive exercises rather than using actual weights, negative loads were employed. The results obtained represent considerable accuracy to perform the movements and create safe conditions for the patient. Also, high flexibility in programming has provided the possibility to perform a wide range of rehabilitation exercises.
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Article Type: Research Article | Subject: Mechatronics
Received: 2014/12/22 | Accepted: 2015/01/30 | Published: 2015/02/17

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