PubMed ID: 19498942
Author(s): Dubra A, Massa J, Paterson C. Preisach classical and nonlinear modeling of hysteresis in piezoceramic deformable mirrors. Opt Express. 2005 Oct 31;13(22):9062-70. PMID 19498942
Journal: Optics Express, Volume 13, Issue 22, Oct 2005
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%.