In order to reduce the cost of the piezo actuator array deformable mirror (DM), a piezoelectric
DM driven by unimorph actuator arrays on multi-spatial layers is proposed. The actuator …

This article presents a study of the electrophysical properties of a piezoceramic material for
use in adaptive optics. The key characteristics that may be important for the manufacturing of …

We study in this letter the control of hysteresis-based actuator systems where its remanence
behavior (eg, the remaining memory when the actuation signal is set to zero) must follow a …

The phase diversity (PD) method is effective for scene-based wavefront sensing and control
(WFSC) in spaceborne high-resolution imagers for Earth observation. The simplest way of …

Compliant mechanisms with embedded piezoelectric actuators have widely been used in
high vibration environments, which brings a requirement that the fundamental frequency …

We present the conceptual design and initial development of the hysteretic deformable
mirror (HDM). The HDM is a completely new approach to the design and operation of …

This paper presents a new analytical model of a conical bridge-type displacement
amplification mechanism (DAM) considering the effect of external loads and a piezostack …

In this work, we study and analyze a class of Duhem hysteresis operators that can exhibit
butterfly loops. We study first the consistency property of such operator, which corresponds …

We study the properties of remnant function, which is a function of output remnant versus
amplitude of the input signal, of Preisach hysteresis operators. The remnant behavior (or the …

To study the deformation of an optical surface and its effect on optical performance, a
method based on the finite element method for calculating the area of a particular …