Open AccessPreisach 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 , linearization , optics , hysteresis , physics , root mean square , control theory (sociology) , 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%.