Piezoelectric electrode design structure capable of widening metal resonator gyro range
A piezoelectric electrode and metal resonance technology, which is applied in the direction of speed measurement by gyro effect, gyroscope/steering sensing equipment, and measurement device, can solve problems such as the influence of power supply design, achieve small structural changes, improve closed-loop range, and increase Effect of Closed Loop Force Feedback Scale
Inactive Publication Date: 2019-03-15
TIANJIN NAVIGATION INSTR RES INST
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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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[0019] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that the embodiments are illustrative, not restrictive, and cannot limit the protection scope of the present invention.
[0020] In order to facilitate understanding of the present invention, at first the structure of the traditional metal resonant gyro resonator is introduced:
[0021] figure 1 It is a schematic diagram of the traditional harmonic oscillator structure and its piezoelectric arrangement. The metal cylindrical resonator 1 is evenly arranged with 8 identical piezoelectric ceramic sheets 3 , and usually 8 identical circular holes 2 are processed in the middle of the piezoelectric ceramic sheets to isolate coupling effects.
[0022] On the premise of not changing other parameters, the present invention proposes an asymmetric design scheme of piezoelectric ceramics, which can effectively expand the closed-loop measuring...
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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...
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Login to View More IPC IPC(8): G01C19/5783
CPCG01C19/5783
Inventor 魏艳勇丛正刘仁龙王妍妍冯小波
Owner TIANJIN NAVIGATION INSTR RES INST