Design of a new magneto-rheological damper featuring a hybrid type of piston for lower limb exoskeleton

Xuan Phu Do; Long Mai Bui Quoc; Byung-Hyuk Kang; Seung-Bok Choi

doi:10.1117/12.2512737

27 March 2019 Design of a new magneto-rheological damper featuring a hybrid type of piston for lower limb exoskeleton

Xuan Phu Do, Long Mai Bui Quoc, Byung-Hyuk Kang, Seung-Bok Choi

Proceedings Volume 10970, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2019; 109702O (2019) https://doi.org/10.1117/12.2512737
Event: SPIE Smart Structures + Nondestructive Evaluation, 2019, Denver, Colorado, United States

Abstract

In this paper, a new magneto-rheological MR) fluid damper is proposed to achieve lower limb exoskeleton of the rehabilitation device. This is achieved by designing the piston configuration as both a square geometry and a circular geometry. By doing this, controllability of the both vibration and moment in the horizontal axis can be obtained. In the design process, two operation modes of MR fluid including flow mode and shear mode are used and the principal design parameters of the square piston are optimized to have low limb exoskeleton as possible under imposed design constraints such as size. This principle is also applied for the circular piston. In addition, the configuration parameters of the design are obtained by optimization using a commercial software as ANSYS ADPL. It is shown through computer simulations that the requirements of the force associated with the limb exoskeleton are successful achieved.

Citation Download Citation

Xuan Phu Do, Long Mai Bui Quoc, Byung-Hyuk Kang, and Seung-Bok Choi "Design of a new magneto-rheological damper featuring a hybrid type of piston for lower limb exoskeleton ", Proc. SPIE 10970, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2019, 109702O (27 March 2019); https://doi.org/10.1117/12.2512737

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