Title :
A new analog oscillator electronics applied to a piezoelectric vibrating gyro
Author :
Levy, R. ; Janiaud, D. ; Le Traon, O. ; Muller, S. ; Gilles, J.P. ; Raynaud, G.
Author_Institution :
ONERA, Chatillon, France
Abstract :
This paper deals with a new analog oscillator applied to a piezoelectric vibratory gyroscope developed at ONERA. The equivalent circuit of the gyro and the readout electronics are presented. Then, the influence of phase and amplitude drifts of the drive mode vibration on the angular velocity measurements are discussed theoretically and experimentally. Finally, simulations of the new analog oscillator electronics including phase and amplitude control loops are shown.
Keywords :
angular velocity measurement; crystal resonators; equivalent circuits; gyroscopes; micromechanical resonators; oscillators; phase control; amplitude control loop; amplitude drift; analog oscillator; angular velocity measurement; drive mode vibration; gyro equivalent circuit; gyrometer; inertial measurement unit; micromachined vibrating sensors; micromechanical inertial sensors; phase control loop; phase drift; piezoelectric vibrating gyro; piezoelectric vibratory gyroscope; readout electronics; Angular velocity; Circuit simulation; Drives; Equivalent circuits; Gyroscopes; Oscillators; Phase measurement; Readout electronics; Velocity measurement; Vibration measurement;
Conference_Titel :
Frequency Control Symposium and Exposition, 2004. Proceedings of the 2004 IEEE International
Print_ISBN :
0-7803-8414-8
DOI :
10.1109/FREQ.2004.1418474
