Ferromagnetic Shape Memory Alloys (FSMAs) like Ni-Mn-Ga have attracted significant attention over the past few years. What makes these materials attractive as actuators is their high energy density, large stroke, and high bandwidth. Among other applications, these properties make FSMAs potentially candidates for developing lightweight Electro-Hydraulic Actuators (EHA). The role of the FSMA transducer is to provide the mechanical energy by the linear displacement in the EHA. In order to develop effective FSMA-based transducers, it is important to study their dynamic behavior. In this paper a dynamic model is presented for a Ni-Mn-Ga transducer. The transducer consists of the Ni-Mn-Ga material, a linear spring, Helmholtz coils, and a soft iron housing. An enhanced phenomenological model is also presented in this work to describe the strain output of the actuator in the response to the magnetic field strength. Using this model the effect of design parameters on the performance of the actuator is studied.
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ASME 2005 International Mechanical Engineering Congress and Exposition
November 5–11, 2005
Orlando, Florida, USA
Conference Sponsors:
- Aerospace Division
ISBN:
0-7918-4210-X
PROCEEDINGS PAPER
Modeling of Ferromagnetic Shape Memory Alloy Based Transducers for Electro-Hydraulic Actuators
Mohammad H. Elahinia
Mohammad H. Elahinia
University of Toledo
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Honghao Tan
University of Toledo
Mohammad H. Elahinia
University of Toledo
Paper No:
IMECE2005-80049, pp. 111-120; 10 pages
Published Online:
February 5, 2008
Citation
Tan, H, & Elahinia, MH. "Modeling of Ferromagnetic Shape Memory Alloy Based Transducers for Electro-Hydraulic Actuators." Proceedings of the ASME 2005 International Mechanical Engineering Congress and Exposition. Aerospace. Orlando, Florida, USA. November 5–11, 2005. pp. 111-120. ASME. https://doi.org/10.1115/IMECE2005-80049
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