Modelling the mechanical dither of a ring resonator

Abstract

This article presents a numerical model for a piezoelectric actuator. This model estimates the layer configurations and flexural stiffness of multilayered materials in order to improve the actuator design. Mechanical dithering can be used to avoid the limitation of the lock-in region in a ring resonator. Although the vibro-elastic bimorph piezoelectric actuator has been used as a control, there are in fact piezoelectric rigidity effects on its layered structure. In this study, the plate/shell theory was adapted to multilayered structures; the geometric and material characteristics of multilayered systems were investigated and their structural performances were estimated. Moreover, the optimization designs for the geometric dimensions or material properties of layered systems were easily achieved through the presented equations.

Parametric design of mechanical dither with bimorph piezoelectric actuator for ring laser gyroscope

“…Yang adopted a finite element method to investigate the resonant frequency at different piezoelectric element and bonding layer thicknesses [5]. The layer configurations and flexural stiffness of multilayered materials was established based on plate/shell theory to obtain the angular displacements of mechanical dither [12]. The author presented an optimal structural design of mechanical dither using finite element analysis [13].…”