A Highly Sensitive Displacing Device Using Piezoelectric Bimorph with Double-Support Structure

Abstract

In order to improve displacing devices, new methods for supporting a bimorph element with a double-support structure were investigated. Consideration of bending properties revealed that, when the bimorph element was bent, the cross-sections at both of the bimorph element's ends rotated. A double-support bimorph element with U-shaped metal plates at each end was designed, the result being used. It was found that the displacement for the double-support bimorph with U-shaped metal plates was approximately 4 times larger than the displacement for a conventional double-support bimorph.