Unlock instant, AI-driven research and patent intelligence for your innovation.

Method, apparatus and system for calibrating gyroscope

A gyroscope and technology to be calibrated, applied in the field of calibrating gyroscopes, can solve the problems of complicated installation of high-precision turntables, inability to calibrate gyroscopes, and inability to have high-precision turntables, etc.

Active Publication Date: 2015-09-23
NEC CORP
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The precision of the high-precision turntable is high, so the price of the high-precision turntable is very expensive
In addition, the installation of the high-precision turntable is complicated, and the requirements for the installation site are strict, so that the general laboratory cannot have a high-precision turntable, so that it is impossible to calibrate the gyroscope

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method, apparatus and system for calibrating gyroscope
  • Method, apparatus and system for calibrating gyroscope
  • Method, apparatus and system for calibrating gyroscope

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] see figure 1 , an embodiment of the present invention provides a method for calibrating a gyroscope, including:

[0039] Step 101: Obtain the forward rotation speed component and the reverse rotation speed component on each coordinate axis of the gyroscope to be calibrated when the gyroscope to be calibrated rotates forward and reverse along the three sensitive axes respectively; each of the three sensitive axes A sensitive axis corresponds to a coordinate axis of the gyroscope to be calibrated, and the angle between each sensitive axis and the corresponding coordinate axis is not greater than a preset threshold.

[0040] Step 102: Obtain the forward rotation speed component and the reverse rotation speed component on each coordinate axis of the high-precision gyroscope that rotates forward and reverse together with the gyroscope to be calibrated; wherein the precision of the high-precision gyroscope is greater than the Calibrate the accuracy of the gyroscope.

[0041...

Embodiment 2

[0047] Embodiments of the present invention provide a method for calibrating a gyroscope. In the embodiment of the present invention, the gyroscope to be calibrated may be calibrated by using a high-precision gyroscope, and the precision of the high-precision gyroscope is greater than that of the gyroscope to be calibrated. Preferably, the accuracy of the high-precision gyroscope may be greater than or equal to 10 times the accuracy of the gyroscope to be calibrated, for example, the accuracy of the high-precision gyroscope is equal to 50 times, 100 times or 150 times the accuracy of the gyroscope to be calibrated, etc.

[0048] The gyroscope to be calibrated includes three sensitive axes, each of the three sensitive axes corresponds to a coordinate axis of the gyroscope to be calibrated, and the angle between each sensitive axis and the corresponding coordinate axis is not greater than the preset threshold. The three sensitive axes include a first sensitive axis, a second se...

Embodiment 3

[0106] see Figure 3-1 , the embodiment of the present invention provides a system for calibrating the gyroscope to be calibrated according to the method described in embodiment 1 or 2, the system includes:

[0107] The turntable 2 and the high-precision gyroscope 3, the gyroscope to be calibrated 1 and the high-precision gyroscope 3 are all located on the turntable 2 and the angle between the rotation axis of the turntable 2 and the coordinate axis of the gyroscope to be calibrated 1 is not greater than a preset threshold.

[0108] The turntable 2 is an ordinary turntable with low precision. If a rotation speed is input to the turntable 2, the turntable 2 cannot always keep rotating at this rotation speed, and the actual rotation speed of the turntable 2 at each moment will fluctuate up and down at this rotation speed. For example, if the input rotation speed to the turntable 2 is 100° / s, the actual rotation speed of the turntable 2 at any moment may be greater than 100° / s, m...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method, apparatus and system for calibrating a gyroscope, and belongs to the field of measuring instruments. The method comprises the following steps: obtaining the forward rotation speed components and backward rotation speed components of a gyroscope to be calibrated on each coordinate axis by making the gyroscope rotate around three sensitive axes in the forward direction and backward direction; obtaining the forward rotation speed components and backward rotation speed components of a high-precision gyroscope, which moves along with the gyroscope to be calibrated, on each coordinate axis; wherein the precision of the high-precision gyroscope is higher than that of the gyroscope to be calibrated; and finally calibrating the gyroscope to be calibrated according to the forward rotation speed components and backward rotation speed components of the high-precision gyroscope on each coordinate axis. The provided method utilizes a high-precision gyroscope to replace a high-precision rotary table to calibrate a gyroscope to be calibrated, and thus common labs can use the method to calibrate a gyroscope.

Description

technical field [0001] Embodiments of the present invention relate to the field of measuring instruments, and in particular to a method, device and system for calibrating a gyroscope. Background technique [0002] In order to measure the posture of a moving object, measuring instruments such as gyroscopes and electronic compass can be used. A gyroscope is a measuring instrument capable of measuring the rotational speed of an object and can be used in many fields. For example, a gyroscope can be used in the navigation field. In the field of navigation, gyroscopes are used to measure the rotational speed of objects required for object navigation. The gyroscope needs to be welded and installed before use. After welding and installed, the relevant characteristics of the gyroscope will change, so the gyroscope needs to be calibrated before use. If an uncalibrated gyroscope is used to measure an object, there may be an error in the output speed of the object measured by the gyro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00
CPCG01C25/005
Inventor 史敬威刘慧峰刘晓炜
Owner NEC CORP