Optimized galfenol-type magnetostrictive actuator
US8823221B1 · kind B1 · utility
3Cited by
9References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 26, 2012 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Apr 26, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N35/01
Abstract
An apparatus and a method for optimizing a Galfenol-type magnetostriction actuator. The method and apparatus includes an elongated Galfenol-type magnetostrictive bar, first coil and a second coil, orthogonal to the first coil, with the coils arranged and activated to optimize expansion and contraction in the bar. According to the apparatus and the method, the first coil pre-aligns the magnetic moments of the bar into a desired crystallographic orientation that allows for maximum expansion or contraction when under the influence of the magnetic field of the second coil.
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