A nonlinear model-based control method for magnetostrictive actuators

A nonlinear model-based control method for magnetostrictive actuators is presented in this paper. Such actuators utilize the realignment of magnetic moments in response to applied magnetic fields to generate strains in the material. Strains and forces generated in this manner are significantly large...

Full description

Saved in:
Bibliographic Details
Published inProceedings of the 36th IEEE Conference on Decision and Control Vol. 4; pp. 3715 - 3720 vol.4
Main Author Smith, R.C.
Format Conference Proceeding
LanguageEnglish
Published IEEE 1997
Subjects
Actuators
Control nonlinearities
Magnetic field induced strain
Magnetic hysteresis
Magnetic materials
Magnetic moments
Magnetostriction
Optimal control
Solenoids
Transducers
Online AccessGet full text
ISBN0780341872
9780780341876
ISSN0191-2216
DOI10.1109/CDC.1997.652434

Cover

More Information
Summary:A nonlinear model-based control method for magnetostrictive actuators is presented in this paper. Such actuators utilize the realignment of magnetic moments in response to applied magnetic fields to generate strains in the material. Strains and forces generated in this manner are significantly larger than those produced by many other smart materials but also exhibit significant nonlinearities and hysteresis. To utilize the full potential of these materials in control transducers, these inherent nonlinearities and hysteresis must be accurately characterized and incorporated in the control law. An energy-based model is employed to characterize the hysteresis in a manner amenable to structural applications. Nonlinear optimal control theory is then used to determine appropriate inputs to the system. The effectiveness of this nonlinear model-based control method is demonstrated through a numerical example.
ISBN:0780341872
9780780341876
ISSN:0191-2216
DOI:10.1109/CDC.1997.652434