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Active vibration damping control method for mechanically dithered ring laser gyroscope

A technology of machine shaking laser gyroscope and control method, applied in the fields of guidance and control, inertial navigation, and can solve the problems of unfavorable program structure miniaturization and integration, etc.

Inactive Publication Date: 2016-05-04
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the signal control of the device is realized through a complex conversion matrix unit and an analog control module, which is not conducive to the miniaturization and integration of the programmed structure of the control

Method used

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  • Active vibration damping control method for mechanically dithered ring laser gyroscope
  • Active vibration damping control method for mechanically dithered ring laser gyroscope
  • Active vibration damping control method for mechanically dithered ring laser gyroscope

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Embodiment Construction

[0088] In a specific embodiment, the technical solution of the present invention includes:

[0089] 1. The hardware structure scheme of the active vibration elimination hardware structure of the laser gyroscope

[0090] The active vibration elimination hardware structure of the machine shaking laser gyroscope consists of the machine shaking laser gyro installation shell 300, the vibration elimination mass spokes 303, the A / D converter 401, the piezoelectric ceramic active driving signal amplifier 403, and the shaking signal acquisition processor 402 composition.

[0091] The present invention improves the existing machine-shaking laser gyro installation shell, and in the space 400 at the bottom of the machine-shaking laser gyro mounting shell 300 installed with a two-frequency machine-shaking laser gyro, from the center base 301 to the machine-shaking laser gyroscope The vibration-absorbing mass spokes 303 (its extension line passing through the center of the central base 301...

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PUM

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Abstract

The invention relates to an active vibration damping control method for a mechanically dithered ring laser gyroscope. In the bottom space of an installation housing provided with a mechanically dithered ring laser gyroscope, N equally spaced damping weight spokes are arranged between a central base and an external wall of the installation housing, and the N weight spokes are in rotational symmetry about the center of the central base; both sides of each vibration damping weight spoke are provided with piezoelectric ceramic sheets, wherein one is used for detecting a dither signal generated by a mechanical dither device of the mechanically dithered ring laser gyroscope and then inputting the signal to a processor; and the processor outputs an active damping driving signal voltage and loads the voltage onto the remaining 2N-1 piezoelectric ceramics. The method simplifies the complex process of actual parameter adjustment, shortens the setup time of active vibration damping and improves the control precision.

Description

technical field [0001] The invention relates to an active shake vibration elimination control method for a machine shake laser gyroscope, which belongs to the field of inertial navigation, guidance and control. Background technique [0002] The laser gyroscope is an inertial sensitive device that uses the Sagnac effect to measure the angular rate of inertial space. It has the advantages of quick start, wide dynamic range, good stability, shock resistance and vibration resistance, and digital output. It has been widely used in attitude measurement, positioning and orientation systems in aviation, aerospace, land and sea. In order to overcome the unique locking effect of the laser gyroscope, the widely used method is the mechanical dithering frequency bias method. The mechanical shaking device installed in the center hole of the laser gyro resonator is used for periodic reciprocating shaking, so that the input angular rate of the laser gyro quickly passes through the lock are...

Claims

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Application Information

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IPC IPC(8): G01C19/64
CPCG01C19/64
Inventor 李耿龙兴武于旭东谢元平张鹏飞魏国卢广锋胡绍民樊振方罗晖王仕文任合明魏文俭
Owner NAT UNIV OF DEFENSE TECH
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