Electrode Location Efficiency and Equivalent Circuit for Flexure Vibration of Piezoelectric Beam 

Aim To provide technical parameters for development of quartz gyro. Methods Theory of elastic beam was applied to piezoelectric beam. Based on the concept of equivalent volume force and energy conservation; the formula of electrode location efficiency was derived. And the electric system was compared with the dynamic one according to the principle of equivalent circuit for piezoelectric crystal; and the general formulae of the parameters for the equivalent circuit; R n L n C n ; were derived. Results and Conclusion Optimum electrode location is chosen; and the derived equivalent circuit parameters are the theoretical base of the circuit design for quartz gyro.