title: Preisach classical and nonlinear modeling of hysteresis in piezoceramic deformable mirrors.
abstract: 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%.
authors.forename: Alfredo
authors.initials: A
authors.lastname: Dubra
authors.forename: John
authors.initials: J
authors.lastname: Massa
authors.forename: Carl
authors.initials: C
authors.lastname: Paterson