Analysis and Experimental Testing of a New Type of Variable Stiffness Magnetic Spring with a Linear Stroke Length
2021 IEEE Energy Conversion Congress and Exposition (ECCE)
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.
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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