13 January 1992 High-force high-strain wide-bandwidth linear actuator using the magnetostrictive material Terfenol-D
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High force, high strain, wide bandwidth linear actuators are now available driven by the new class of `giant' magnetostrictive material called Terfenol-D. Performance data are reported which allow evaluation of several actuator designs. Strokes over 100 (mu) , clamped forces to 1700 N, and a frequency range of dc to over 3 KHz are available from small actuators. Fundamental principles of linear actuator design based on Terfenol-D drive are discussed, along with Terfenol-D characteristics which can be altered to affect actuator performance. Terfenol-D piezomagnetic constants which adapt to external variables, along with the self sensing capabilities of Terfenol-D actuators, will allow development of advanced control capabilities, or smart actuators.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mel J. Goodfriend, Mel J. Goodfriend, Kevin M. Shoop, Kevin M. Shoop, Carl G. Miller, Carl G. Miller, } "High-force high-strain wide-bandwidth linear actuator using the magnetostrictive material Terfenol-D", Proc. SPIE 1543, Active and Adaptive Optical Components, (13 January 1992); doi: 10.1117/12.51207; https://doi.org/10.1117/12.51207

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