Piezoelectric Actuation: Control of Linear Thermal Displacement

Overview

A piezoelectric solid is deformed by applying an electric field to it. This behavior is called the converse piezoelectric effect. Utilizing the effect, one can create a functional structure for control of a thermoelastic response induced in it by a thermal loading. In order to control the response, it is necessary to determine an appropriate electric field which should be applied to a piezoelectric element. The applied electric field can be determined by solving an inverse problem, but the solution is generally difficult to obtain. Applications of the piezoelectric actuation have been focused on control problems of a thermal displacement. Reviews on displacement control problems are given in Ref. [1, 2].

This article explains analysis procedure of a displacement control problem in a composite disk consisting of a transversely isotropic structural layer and a piezoelectric layer of crystal class 6 mm [1]. When a prescribed distribution of ambient heating temperature acts on...