Actuator system having magnetomechanical cantilever beam formed of ferromagnetic amorphous material
First Claim
1. For use in a magnetomechanical actuator system, a magnetomechanical cantilever beam adapted to be responsive to magnetic fields of varying magnitudes to produce precise and rapid repositioning of the free end of the magnetomechanical cantilever beam corresponding to the magnitude of the applied magnetic field, said magnetomechanical beam comprising magnetostrictive ferromagnetic amorphous material having a magnetomechanical coupling factor, k, greater than zero where k=(1-fr2 /fa2)1/2, fr and fa being the resonant and antiresonant frequencies respectively.
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Abstract
An actuator system comprises a magnetomechanical cantilever beam adapted to be responsive to magnetic fields of various magnitudes. The system provides precise and rapid repositioning of the free end of the beam corresponding to the magnitude of the applied magnetic field. The beam is comprised of magnetostrictive ferromagnetic amorphous material and provides efficient, high force, high speed actuation to devices requiring electronically controlled variable displacement motion.
15 Citations
11 Claims
- 1. For use in a magnetomechanical actuator system, a magnetomechanical cantilever beam adapted to be responsive to magnetic fields of varying magnitudes to produce precise and rapid repositioning of the free end of the magnetomechanical cantilever beam corresponding to the magnitude of the applied magnetic field, said magnetomechanical beam comprising magnetostrictive ferromagnetic amorphous material having a magnetomechanical coupling factor, k, greater than zero where k=(1-fr2 /fa2)1/2, fr and fa being the resonant and antiresonant frequencies respectively.
Specification