Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A Method for Correcting Accelerometer Zero Offset

An accelerometer, zero offset technology, applied in the direction of speed/acceleration/shock measurement, testing/calibration of speed/acceleration/shock measurement equipment, measurement devices, etc., to ensure measurement accuracy and solve the problem of zero offset change Effect

Active Publication Date: 2021-02-09
BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH +1
View PDF17 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of accelerometer zero offset correction method, to overcome the defect of prior art means in solving the accelerometer zero offset problem

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
  • A Method for Correcting Accelerometer Zero Offset
  • A Method for Correcting Accelerometer Zero Offset
  • A Method for Correcting Accelerometer Zero Offset

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] The basic principle of the horizontal inclination measurement based on the accelerometer is: the accelerometer measures the component of the acceleration of gravity on its sensitive axis to solve the horizontal inclination of the accelerometer sensitive axis, thereby realizing the measurement of the levelness. The spatial attitude of the carrier can be measured by installing two mutually orthogonal accelerometers. The measurement principle of the uniaxial accelerometer is as follows: figure 1 shown.

[0020] figure 1 In , the sensitive direction of the accelerometer coincides with the X-axis, and when the accelerometer rotates at an inclination angle θ in the plane where the X-axis and the direction of the gravity acceleration vector are located, it is based on the principle of trigonometric functions. The acceleration component of ...

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 belongs to the technical field of inclination angle measurement based on an accelerometer, and in particular relates to an accelerometer zero offset correction method. In the two-axis horizontal inclination measurement, the inclination angle of the Y-axis is the placement angle of the X-axis, and the inclination angle of the X-axis is the placement angle of the Y-axis. The accelerometer is measured in advance on a precision vertical rotary table at a placement angle of 0°. From the actual data of the zero position offset every 1° between 90° and 90°, establish a measurement reference data table, and solidify the table in the main control program for online correction; in actual use, the placement angle of the X-direction accelerometer is determined by The Y accelerometer is measured, and then look up the table to obtain the measured value of the zero offset of the X-axis accelerometer in the state of this placement angle and correct it; the placement angle of the Y-direction accelerometer is measured by the X accelerometer, and then Look up the table to obtain the measured value of the zero offset of the Y-axis accelerometer in the state of this placement angle and correct it. The invention can realize the online correction of the zero offset of the accelerometer and improve the measurement accuracy of the inclination angle.

Description

technical field [0001] The invention belongs to the technical field of inclination measurement based on accelerometers, and in particular relates to an accelerometer zero offset correction method, which realizes online correction of the accelerometer zero offset and improves the inclination measurement accuracy thereof. Background technique [0002] There is no published patent on the correction method of the zero offset of the accelerometer. According to the search, at present, there are many methods for measuring the horizontal inclination angle through two orthogonally installed accelerometers sensitive to the gravitational acceleration. There are many articles and patents for research and explanation. This method is simple and practical, but the measurement error is relatively large. This is caused by the horizontal zero error caused by the zero offset of the accelerometer itself. Therefore, for the inclination measurement system based on the accelerometer, a key techno...

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 Patents(China)
IPC IPC(8): G01P21/00
CPCG01P21/00
Inventor 王锴磊沙春哲刘莎姜云翔
Owner BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com