Rapid measuring method for installation error of strapdown inertial system gyroscope based on three-axle rotary table

A strapdown inertial system and three-axis turntable technology, which is applied to navigation, measuring devices, instruments and other directions through velocity/acceleration measurement, can solve problems such as time-consuming, and achieve the effects of simple method, small amount of calculation, and high precision

Inactive Publication Date: 2010-12-01
HARBIN ENG UNIV
View PDF2 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional method of measuring the installation error of the gyroscope is to obtain the installati

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
  • Rapid measuring method for installation error of strapdown inertial system gyroscope based on three-axle rotary table
  • Rapid measuring method for installation error of strapdown inertial system gyroscope based on three-axle rotary table
  • Rapid measuring method for installation error of strapdown inertial system gyroscope based on three-axle rotary table

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Hereinafter, the present invention will be described in more detail with examples in conjunction with the accompanying drawings:

[0021] figure 1 Six installation errors θ for the top xy , Θ xz , Θ yx , Θ yz , Θ zx , Θ zy Coordinate diagram, OXYZ is the standard orthogonal coordinate system, OX b Y b Z b It is a non-orthogonal coordinate system composed of the three sensitive axes of the top. OX′ is OX b Projection on the plane OZX, the angle between the two is θ xz , The angle between OX′ and OX is θ xy , So OX b The installation error between OX and OX can use the above two parameters θ xz , Θ xy To describe; in the same way, OY′ is OY b Projection on the plane OXY, OY b The installation error angle between OY and OY can be two small angles θ yx , Θ yz To describe; OZ′ is OZ b Projection on the plane OZY, OZ b The installation error with OZ can also use two small angles θ zy , Θ zx To describe.

[0022] Combine figure 2 , image 3 The principle of the method for determ...

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 present invention provides a rapid measuring method for installation error of a strapdown inertial system gyroscope based on a three-axle rotary table; the strapdown system is installed on a chassis of the three-axle table; sensing shafts of an Y gyroscope, a X gyroscope and a Z gyroscope are pointed at an inner frame, a middle frame and an outer frame of the rotary table, and the inner frame is pointed to the east, the middle frame is pointed to the north and the outer frame is pointed to the sky; the rotary table chooses the northeast direction to respectively adjust the angles of the inner frame, the middle frame and the outer frame to cause the Y gyroscope, the X gyroscope and the Z gyroscope to satisfy the output requirement to get the first to sixth installation errors of the gyroscope. The method separates the installation error from the standardizations of the gyroscope and avoids the influence caused by coupling each measuring parameter in the testing method for the standardizations of the gyroscope of the traditional speed experiments by directly and quickly measuring via the three-axle rotary table. Compared with the prior art, the method is simple and quick, has explicit physical conception, easy understanding and small calculation amount. Therefore, the method is a rapidly, directly and independently measuring method with higher precision.

Description

technical field [0001] The invention relates to a method for measuring installation errors of navigation devices in the navigation field. Background technique [0002] The strapdown inertial system has short response time, high reliability, small size, light weight, and certain accuracy. It is widely used in the navigation field and has huge economic benefits. [0003] The installation error is an important part of the error source of the strapdown inertial system. Therefore, in the actual system, in order to improve the accuracy of the navigation system, it is first necessary to install the gyroscope as accurately as possible according to the accuracy requirements, and then measure and estimate the installation error for correction. Compensation to reduce the adverse effects of gyroscope installation errors on the system. [0004] The traditional method of measuring the installation error of the gyroscope is to obtain the installation error of the gyroscope through the spe...

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
IPC IPC(8): G01C25/00G01C21/18
Inventor 孙枫唐李军周广涛高伟徐博奔粤阳于强王武剑吴磊王伟
Owner HARBIN ENG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap