Electromechanical coupling modeling and simulation analysis of cupped wave gyro

摘要

Based on the Lagrange-Maxwell principle, the electromechanical coupling model of cupped wave gyro is built, and the relations between electric field energy of piezoelectric electrode and vibration of resonator are obtained. For validating the analysis of the electromechanical coupling model, the electromechanical coupled-field finite element model of a φ25mm cupped wave gyro has been employed for coupled-field modal simulation and harmonic response simulation. Simulation result shows that the amplitude of driving voltage and direction of excitation greatly influence the vibration amplitude and distribution of the cupped wave gyro, and the electric displacement distribution of Corilis force response validates the piezoelectric electrodes could sense the vibration of the resonator in sense mode.