An elastic support electrode structure for unbalanced mass detection of vibrating gyroscope
A technology of balancing mass and elastic support. It is applied in the direction of speed measurement, gyroscope/steering sensing equipment, measuring device, etc. due to the gyro effect. The effect of vibration displacement and improved detection sensitivity
Active Publication Date: 2022-08-02
NAT UNIV OF DEFENSE TECH
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Problems solved by technology
[0004] The unbalanced mass will cause a difference in the resonant frequency between the drive mode and the detection mode of the resonant structure, which will reduce the sensitivity of the gyroscope and cause quadrature error
In addition, the unbalanced mass causes the center of mass of the resonant structure to vibrate when the resonant structure vibrates in the driving mode or detection mode, and the vibration of the center of mass will reduce the quality factor of the resonant structure and reduce the dynamic performance of the gyro in the shock and vibration environment
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[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relationship between various components under a certain posture (as shown in the accompanying drawings). The relative positional relationship, the movement situation, etc., if the specific posture changes, the directional indication also changes accordingly. ...
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The invention discloses an elastic supporting electrode structure for detecting the unbalanced mass of a vibrating gyroscope. The inner plate is connected in the frame of the outer frame by elastic beams, the inner plate has a torsional and / or translational resonance stroke in the frame of the outer frame, and the resonance frequency of the inner plate is similar to the resonance frequency of the working mode of the resonance structure. The invention is applied to the field of vibrating gyroscope manufacturing. Since the resonance frequency of the elastic support electrode structure is close to the resonance frequency of the working mode of the resonance structure, the vibration displacement of the elastic support electrode structure can be significantly amplified, and the detection sensitivity can be improved. By detecting the vibration displacement of multiple positions on the elastic support electrode structure, the vibration displacement of the elastic support electrode structure in multiple directions can be calculated, and the measurement and identification of various types of unbalanced masses of the vibrating gyro resonance structure can be realized.
Description
technical field [0001] The invention relates to the technical field of vibrating gyroscope manufacturing, in particular to an elastic supporting electrode structure for detecting the unbalanced mass of a vibrating gyroscope. Background technique [0002] Gyroscope is a sensor that measures the angular motion of a carrier in inertial space, and is the basic core device of inertial navigation and attitude measurement systems. It has very important application value in the fields of precision guidance, unmanned systems, oil exploration, stable platforms, and space vehicles. [0003] Vibrating gyroscope is a kind of gyroscope, which has the advantages of few parts, high reliability and long working life, and has been widely used. The resonance structure is the sensitive element of the vibrating gyroscope, and its vibration characteristics directly determine the upper limit of the performance of the vibrating gyroscope. A frequency-matched vibrating gyroscope is a type of vibrat...
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IPC IPC(8): G01C25/00G01C19/5783
CPCG01C25/00G01C19/5783G01C19/5691G01C25/005
Inventor 石岩肖定邦卢坤席翔吴学忠吴宇列张勇猛
Owner NAT UNIV OF DEFENSE TECH