Preisach classical and nonlinear modeling of hysteresis in piezoceramic deformable mirrors | Zendy

Alfredo Dubra | Zendy; J. S. Massa | Zendy; Carl Paterson | Zendy

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Preisach classical and nonlinear modeling of hysteresis in piezoceramic deformable mirrors

Author(s) -

Alfredo Dubra,

J. S. Massa,

Carl Paterson

Publication year - 2005

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/opex.13.009062

Subject(s) - deformable mirror , adaptive optics , nonlinear system , optics , linearization , hysteresis , physics , control theory (sociology) , root mean square , computer science , artificial intelligence , control (management) , quantum mechanics

In this work the Preisach classical and nonlinear models are used to model the hysteretic response of a piezoceramic deformable mirror for use in adaptive optics. Experimental results show that both models predict the mirror behavior to within 5% root-mean-squared (rms) error. An inversion algorithm of the Preisach classical model for linearization of the mirror response was implemented and tested in an open-loop adaptive optics system using a Shack-Hartmann (SH) sensor. Measured errors were reduced from 20% rms to around 3%.

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