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A Stator Rotation Modulation Error Compensation Method for Suspended Gyroscope

A technology of rotation modulation and error compensation, applied in the direction of instruments, measuring devices, etc., can solve the problems of large volume, large power consumption, heavy weight, etc., to expand the scope of application, reduce volume and power consumption, and eliminate gyro drift errors Effect

Active Publication Date: 2018-09-21
PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem solved by the present invention is: Aiming at the problems of large volume, heavy weight and high power consumption of the equipment required for system-level rotation modulation, a new component-level suspension-like gyroscope rotation modulation scheme is proposed, and the gyro drift is realized by the rotation of the bearing stator The inhibition effectively reduces the size, weight and power consumption of rotary modulation, and expands the application range of rotary modulation

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  • A Stator Rotation Modulation Error Compensation Method for Suspended Gyroscope
  • A Stator Rotation Modulation Error Compensation Method for Suspended Gyroscope
  • A Stator Rotation Modulation Error Compensation Method for Suspended Gyroscope

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Embodiment Construction

[0044] specific implementation plan

[0045] The schematic diagram of speed rotation modulation is shown in figure 1 Shown, the specific embodiment of the present invention is as figure 2 As shown, the specific implementation steps are as follows:

[0046] 1. Rotation modulation

[0047] Under the condition of stator rotation, the rotation modulation measurement equation is:

[0048]

[0049] Among them, e is the detected electric signal of the torque device, h is the detected bearing displacement number, K is the constant value matrix of the proportional coefficient, and L is the conversion matrix from gyro drift to gyro drift torque, is the relative inertial space angular rate of the rotating stator coordinate system, ω IgX , ω IgY are the attitude angular rate of the gyro room relative to the inertial space Components on the X-axis and Y-axis of the coordinate X-Y-Z system of the gyro room, Ω is the angular momentum vector of the bearing stator around the rotor ...

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Abstract

The invention relates to a stator rotation modulation error compensation method for a suspension type gyroscope, and belongs to the technical field of measurement and control.Bearing stator rotation periodic motion is used as a carrier wave for carrying out rotation modulation on a detected signal, then, rotation demodulation is carried out on the modulated signal, a gyroscopic drift error is reduced by carrying out integral filtering on the demodulated signal, and high-precision detection of the gyroscope case relative inertial space angular rate is achieved.The stator rotation modulation error compensation method can be applied to optimal design and high-precision attitude measurement of the suspension type gyroscope.

Description

technical field [0001] The invention relates to a stator rotation modulation error compensation method of a suspended gyroscope, which is suitable for the optimal design and high-precision angular rate measurement of the suspended gyroscope. technical background [0002] As the main inertial navigation detection equipment, gyroscope plays an important role in both military and civilian fields. The suspended gyroscope is an instrument that is sensitive to the angular motion of the gyro shell relative to the inertial space by generating the moment of momentum through the rotation of the suspended gyro rotor. According to the levitation method, it is mainly divided into electrostatic gyroscope, magnetic levitation gyroscope, liquid levitation gyroscope and air levitation gyroscope. [0003] The traditional suspended rotor angular rate gyroscope has a fixed axis, which can provide an azimuth reference for the measured object by using this characteristic. The accuracy of this b...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C25/00
CPCG01C25/005
Inventor 任元缪存孝樊亚洪陈晓岑蔡远文刘虎辛朝军夏长峰许国锋
Owner PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV