Development of vibrating disc piezoelectric gyroscope

The paper presents an indigenously developed vibrating disc piezoelectric gyroscope, in which both excitation and detection have been done through piezoelectric, using PZT-5H material. The gyroscope has been driven to resonant state by direct piezoelectric effect, using 20 V ac signal at 93 kHz, and the output has been detected by the reverse piezoelectric effect. The performance of this gyroscope has been tested with 4 microprocessor-controlled turntable, and the output of the gyroscope has been found to be linearly proportional to the rotation speed within a range +/- 150 o/S. The sensitivity of the gyroscope is about 0.5 mV/ o/s, which is comparable to that of other gyroscopes of similar category.