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Proceedings Paper

Open loop nonlinear optimal tracking control of a magnetostrictive terfenol-D actuator
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Paper Abstract

A homogenized energy model was implemented in a model-based nonlinear control design to accurately track a reference displacement signal for high frequency magnetostrictive actuator applications. Rate dependent nonlinear and hysteretic magnetostrictive constitutive behavior is incorporated into the finite-dimensional optimal control design to improve control at high frequency. The integration of the rate-dependent nonlinear and hysteretic magnetostrictive constitutive model in the control design minimized the amount of feedback required for precision control. The control design is validated experimentally and shown to accurately track a reference signal at frequencies up to at least 1 kHz.

Paper Details

Date Published: 26 April 2007
PDF: 12 pages
Proc. SPIE 6526, Behavior and Mechanics of Multifunctional and Composite Materials 2007, 65262L (26 April 2007); doi: 10.1117/12.716254
Show Author Affiliations
William S. Oates, Florida A&M/Florida State Univ. (United States)
Phillip G. Evans, Ohio State Univ. (United States)
Ralph C. Smith, North Carolina State Univ. (United States)
Marcelo J. Dapino, Ohio State Univ. (United States)


Published in SPIE Proceedings Vol. 6526:
Behavior and Mechanics of Multifunctional and Composite Materials 2007
Marcelo J. Dapino, Editor(s)

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