Shape Control of Plates Using Piezoceramic Elements

摘要

The use of piezoceramic elements to control the vibrations of a beam has beenextensively studied; see, for example, Baz and Poh. However, their use to control the shape and vibrations of a thin plate has received less attention. We show here that the deflections of the centerline of a simply supported plate and the tip deflection of a cantilever plate, both deformed quasistatically, can be controlled by applying suitable voltages to the PZTs. The voltage to be applied to the actuators as a function of the surface area covered by them in the former case and as a function of their distance from the free end for the latter case is depicted graphically. (MM).