13 January 1992 High-force high-strain wide-bandwidth linear actuator using the magnetostrictive material Terfenol-D
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Abstract
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, Kevin M. Shoop, 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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