8 September 1993 New Terfenol-D actuator design with applications to multiple DOF active vibration control
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Abstract
A linear actuator system for multi-dimensional structure control using the magnetostrictive material Terfenol-D has been designed, built, and tested by the Intelligent Automation, Inc. The actuator assembly incorporates an instrumented Terfenol-D rod, an excitation coil to provide the magnetic field, a permanent magnet assembly to provide a magnetic bias field, and a mechanical preload mechanism. The prototype of the actuator is 2.0 inches in diameter and 8 inches long, and provides a peak-to-peak stroke of 0.01 inches. A linear model was also established to characterize the behavior of the actuator for small motion. Based on the prototype of the actuator, we have performed a study of a six degree-of-freedom active vibration isolation system using a Stewart Platform in a new configuration. IAI's final system is intended for precision control of a wide range of space-based structures as well as earth- base systems.
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Leonard S. Haynes, Leonard S. Haynes, Zheng Jason Geng, Zheng Jason Geng, Joseph P. Teter, Joseph P. Teter, } "New Terfenol-D actuator design with applications to multiple DOF active vibration control", Proc. SPIE 1917, Smart Structures and Materials 1993: Smart Structures and Intelligent Systems, (8 September 1993); doi: 10.1117/12.152821; https://doi.org/10.1117/12.152821
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