Experimental studies on dynamic response of piezoelectric based hemispherical resonator gyroscope

Abstract

This work measures the performance characteristics of a hemispherical resonator gyroscope (HRG) and compares it with a numerical model. This work we explore the optical and piezoelectric measurement methods to determine the resonant frequency of HRG. These experimental results are compared with their numerically obtained values. To explore the performance characteristics, the effect of varying actuation voltages on the sense mode displacement and the piezoelectric sensor output was studied in the absence of input angular rate. The structure was then subjected to range of angular rate signals, at a constant actuation voltage and the corresponding sensor response was analysed.