Gyro frequency characteristic measuring method and device

A technology of frequency characteristics and measurement methods, applied in the field of measurement, can solve problems such as the limited frequency range of angular vibration tables

Active Publication Date: 2018-02-09
LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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Problems solved by technology

The frequency range of the angular vibrating table is limited, and most of them can only reach tens of Hz. The angular vibrating table can only measure the frequency characteristics of the gyroscope in a very small frequency range.

Method used

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  • Gyro frequency characteristic measuring method and device

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specific Embodiment

[0029] Gyro frequency characteristic device:

[0030] The geometric parameters of the gyro frequency characteristic measuring device are as follows:

[0031] Driving wheel driven wheel center distance D=180mm

[0032] Driving wheel radius r=25mm

[0033] The length of the connecting rod L=113.7mm

[0034] Driving wheel initial position angle θ 0 =27.1°

[0035] The initial position angle of driven wheel rotation β 0 =130.4°

[0036] The distance between the working point of the cam surface of the driven wheel and the rotation center of the driven wheel at the initial position R0=96mm

[0037] The contour equation of the working part of the driven wheel is:

[0038] 113.7 2 =[25×Cosθ-R·Cos(0.2×Sin(θ-27.1)+130.4)] 2

[0039] +[25×Sinθ-R·Sin(0.2×Sin(θ-27.1)+130.4)] 2

[0040] Among them, θ is the rotation angle of the driving wheel and R is the distance between the working point of the cam surface of the driven wheel and the center of rotation of the driven wheel.

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Abstract

The invention relates to a gyro frequency characteristic measuring method and a device. According to the gyro frequency characteristic measuring method, a reciprocating rotation device is adopted forsupply a gyro with angular vibrations; data processing is carried out based on a gyro angular velocity amplitude value and an applied angular velocity amplitude so as to obtain the gyro frequency characteristics, and the gyro frequency characteristics at different frequency can be measured via changing the driving wheel rotating speed of the reciprocating rotation device; the driving wheel is a standard circular, the contour of a driven wheel is a curve, when the driving wheel rotates at a constant angular velocity omega, a relatively large rotating wheel is driven to perform periodic reciprocating rotation at f=omega/2phi. The gyro frequency characteristic measuring method is capable of realizing relatively complete measuring of gyro frequency characteristics in a relatively wide frequency range.

Description

technical field [0001] The invention belongs to the field of measurement, and relates to a method and a device for measuring the frequency characteristic of a gyroscope, more precisely, to a method for measuring the frequency characteristic of a gyroscope and a device for measuring the frequency characteristic of a gyroscope. Background technique [0002] When the frequency of the angular velocity input signal is different, the frequency response characteristics of the gyroscope are also different. When the input signal frequency is much higher than the gyro response bandwidth, the gyro hardly responds, and the gyro reading is almost zero; when the input signal frequency is within the gyro response bandwidth or near the gyro response bandwidth, there is also a gap between the gyro reading and the real input angular velocity. difference. [0003] The response characteristics of the gyroscope to the input angular velocity signal are directly related to the measurement accurac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00
CPCG01C25/00
Inventor 刘健赵晓博贾清虎王建龙窦光继
Owner LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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