A bidirectional magnetostrictive actuator with millimeter stroke and a blocked force of ± 22 N has been developed based on a simple hydraulic magnification mechanism. The purpose of the actuator is to replace the electromagnetic actuator in active engine mounts. The Terfenol-D actuator has a flat free displacement response up to 200 Hz and a flat blocked force response over a frequency range of at least 10 to 500 Hz. The actuator promises to deliver a much broader frequency bandwidth than commercial electromagnetic actuators.
- Aerospace Division
Hydraulically Amplified Magnetostrictive Actuator for Active Engine Mounts
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Chakrabarti, S, & Dapino, MJ. "Hydraulically Amplified Magnetostrictive Actuator for Active Engine Mounts." Proceedings of the ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. Smart Materials, Adaptive Structures and Intelligent Systems, Volume 1. Ellicott City, Maryland, USA. October 28–30, 2008. pp. 795-802. ASME. https://doi.org/10.1115/SMASIS2008-518
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