Analysis and Experimental Testing of a New Type of Variable Stiffness Magnetic Spring with a Linear Stroke Length

Authors

Md Emrad Hossain, Portland State University
Jonathan Z. Bird, Portland State UniversityFollow
Victor Albarran, Portland State University
Dawei Che, Portland State UniversityFollow

Published In

2021 IEEE Energy Conversion Congress and Exposition (ECCE)

Document Type

Citation

Publication Date

12-2021

Abstract

In this paper a new type of variable stiffness magnetic spring is proposed. The magnetic spring is composed of radially magnetized outer rotor magnets coupled with axially magnetized inner cylindrical magnets. It is shown that this magnet arrangement creates a highly linear stroke length. By rotating the inner magnetic rotor, the stiffness of the spring can be adjusted. The force as a function of stroke length and torque required to adjust the stiffness were computed using finite element analysis and then verified using an experimental test setup.

Rights

© Copyright 2021 IEEE - All rights reserved.

Locate the Document

https://doi.org/10.1109/ECCE47101.2021.9595241

DOI

10.1109/ECCE47101.2021.9595241

Persistent Identifier

https://archives.pdx.edu/ds/psu/36773

Publisher

IEEE

Citation Details

Hossain, M. E., Bird, J. Z., Albarran, V., & Che, D. (2021). Analysis and Experimental Testing of a New Type of Variable Stiffness Magnetic Spring with a Linear Stroke Length. Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ecce47101.2021.9595241