Optimal design method for exciting electrode of piezoelectric vibration gyro

Abstract

The invention relates to an optimal design method for an exciting electrode of a piezoelectric vibration gyro. The method comprises the following steps: (1) establishing a finite element model of the piezoelectric vibration gyro and configuring material and structure parameters of each part according to the actual condition; (2) performing modal analysis to obtain the inherent frequency and the relevant vibration mode of a harmonic oscillator, applying sine exciting voltage to a piezoelectric electrode on the basis, and performing harmonic response analysis; (3) deducing the influence rule of each parameter of the exciting electrode on the harmonic oscillator through the analysis result of the step (2); and (4) based on comprehensive consideration in many respects, selecting optimal design parameters. By the method, a definite element emulation analysis method is adopted, the defects of an experience cut-and-try method are overcome, the design efficiency and accuracy of the exciting electrode are improved, the research and development cost is reduced, the research and development process is accelerated, and a reference is provided for reasonable design of the exciting electrode of the piezoelectric vibration gyro.

Description

technical field [0001] The invention belongs to the technical field of piezoelectric vibrating gyroscopes, and in particular relates to a method for designing excitation electrodes of piezoelectric vibrating gyroscopes. Background technique [0002] The piezoelectric vibrating gyroscope uses the Coriolis effect generated by the longitudinal standing wave excited by the excitation electrode in the axisymmetric resonant shell when the base rotates around the central axis, so that the mode shape precesses relative to the shell, and is sensitive to the measurement of angular motion. Compared with other types of gyroscopes, this gyroscope has the advantages of small size, high precision, low energy consumption, long life, simple structure of mechanical parts, good stability when power is off, wide operating temperature range, stable performance, resistance to harsh environments, and low cost. Low and outstanding advantages, it is a Coriolis vibrating gyroscope with broad applicat...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantages of high research and development costs and long development cycles in designing piezoelectric vibration gyro excitation electrodes by experience and trial and error, and proposes an optimal design method for piezoelectric vibration gyro excitation electrodes

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