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Growing Science » Engineering Solid Mechanics » Design, control, and prototyping of a series elastic actuator for an active knee orthosis

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Engineering Solid Mechanics

ISSN 2291-8752 (Online) - ISSN 2291-8744 (Print)
Quarterly Publication
Volume 6 Issue 3 pp. 241-252 , 2018

Design, control, and prototyping of a series elastic actuator for an active knee orthosis Pages 241-252 Right click to download the paper Download PDF

Authors: Alireza Vadiati, Ahmad Bagheri, Mohammad Mahjoob, Mohammad J. Sadigh

DOI: 10.5267/j.esm.2018.5.003

Keywords: Series elastic actuator, Active knee orthosis, Energy consumption, Peak power, optimization

Abstract: The use of elastic elements in actuators can be effective in improving their performance. The present paper examines the different layouts of the elastic element in actuators, choosing the appropriate design, and then designing a series elastic actuator for use in an active knee orthosis. For this purpose, the design elements of actuators were extracted using the knee data for walking. In the next step, considering the effect of the spring stiffness on the energy consumption and actuator’s peak power, its optimum amount for gait was calculated. Afterwards, the effect of adding the spring has been shown at an optimal value. Since the human knee in a gait cycle involves position and force control, designing an efficient controller to track the force and position of the knee during the gait cycle is the next section of this study. Due to the specific application of this actuator, its volume and size are important for the user. For this reason, it is necessary to design and construct an actuator with a suitable size and weight, with good output. For this purpose, a lightweight and low volume actuator was fabricated.

How to cite this paper
Vadiati, A., Bagheri, A., Mahjoob, M & Sadigh, M. (2018). Design, control, and prototyping of a series elastic actuator for an active knee orthosis.Engineering Solid Mechanics, 6(3), 241-252.

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Journal: Engineering Solid Mechanics | Year: 2018 | Volume: 6 | Issue: 3 | Views: 2387 | Reviews: 0

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