Piezoelectric electrode design structure capable of widening metal resonator gyro range

Abstract

The invention relates to a piezoelectric electrode design structure capable of widening a metal resonator gyro range. Eight piezoelectric ceramic pieces are uniformly arranged on metal cylindrical harmonic oscillators in a peripheral direction; a round hole is formed in a metal cylindrical harmonic oscillator between every two adjacent piezoelectric ceramic pieces; every two symmetrical piezoelectric ceramic pieces are a pair of identical piezoelectric ceramic pieces; the eight piezoelectric ceramic pieces are divided into four pairs, namely a drive electrode pair, an amplitude detection electrode pair, a force feedback application electrode pair and a node detection electrode pair respectively; the piezoelectric ceramic pieces in the drive electrode pair and the amplitude detection electrode pair are arranged in an angle of 90 degrees at intervals; the piezoelectric ceramic pieces in the force feedback application electrode pair and the node detection electrode pair are arranged in anangle of 90 degrees at intervals. The piezoelectric ceramics are subjected to asymmetric design, the closed-loop range of the metal resonator gyro can be improved under the condition that the resolution and other indexes are not changed, and the accuracy loss is low.

Description

technical field [0001] The invention relates to the technical field of resonant / solid wave gyroscopes, in particular to a piezoelectric electrode design structure for expanding the measuring range of metal resonant gyroscopes. Background technique [0002] Resonant / solid wave gyroscopes are a type of high-precision, ultra-high-reliability gyroscopes, which have developed rapidly in recent years. In addition to being used in the field of aerospace, they are also gradually promoted in the fields of marine, land, and ammunition. Among them, the core sensitive part of the elastic resonant / solid wave gyroscope - the resonant oscillator is generally made of metal materials, so it is also called a metal resonant gyroscope. [0003] The resonator of the metal resonator gyroscope is generally cylindrical in shape, and piezoelectric ceramic electrodes are attached to the bottom of the cylinder to drive the vibration of the resonator and to be sensitive to the gyroscopic effect. The s...

AI Technical Summary

Problems solved by technology

In order to improve the measuring range of metal resonant gyroscopes for bombs, especially the closed-loop measuring range, methods such as expanding the size of piezoelectric ceramics and increasing the power supply voltage are usually used, but these methods either affect the resolution and accuracy of the gyroscope or the design of the power supply. greater impact

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