Effects of bending stiffness and rotatory inertia in a mass-rod piezoelectric vibratory gyroscope

Article type: Research Article

Authors: Chen, Jiankang^a | Wang, Wencai^a | Yang, Zengtao^b | Wang, Ji^a | Yang, Jiashi^{a; c; *}

Affiliations: [a] Department of Mechanics and Engineering Science, School of Engineering, Ningbo University, 818 Fenghua Road, Ningbo, Zhejiang 315211, China | [b] Institute of Mechanics and Sensing Technology, School of Civil Engineering and Architecture, Central South University, Changsha, Hunan 410083, China | [c] Department of Engineering Mechanics, University of Nebraska, Lincoln, NE 68588-0526, USA

Correspondence: [*] Corresponding author: E-mail: jyang1@unl.edu

Abstract: We perform a theoretical analysis on a vibratory gyroscope consisting of a concentrated mass connected to two orthogonal piezoelectric rods in extensional vibration. The analysis is more refined than a previous one in that the bending stiffness of the rods and the rotatory inertia of the mass are included. It is shown that when these effects are considered, the behavior of the gyroscope is affected in a fundamental way. The gyroscope has an output even when it is not rotating, and the output is sensitive to the rotatory inertia of the mass.

Keywords: Piezoelectricity, gyroscope

DOI: 10.3233/JAE-2009-1043

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 31, no. 1, pp. 1-8, 2009