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

A Method of Calculating Aircraft Attitude Using Geomagnetic Information and Angular Rate Gyroscope

An angular rate gyro and aircraft technology, applied in attitude control, navigation through speed/acceleration measurement, instruments, etc., can solve problems such as roll angle calculation error divergence, and achieve the effect of eliminating measurement blind spots

Active Publication Date: 2021-01-29
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF17 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if the measurement accuracy of the magnetoresistive sensor reaches an ideal state, when the angle between the projectile axis and the magnetic north is small, the error in the calculation of the roll angle will tend to a certain extent due to errors in the measurement of the pitch angle and yaw angle. to diverge

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 of Calculating Aircraft Attitude Using Geomagnetic Information and Angular Rate Gyroscope
  • A Method of Calculating Aircraft Attitude Using Geomagnetic Information and Angular Rate Gyroscope
  • A Method of Calculating Aircraft Attitude Using Geomagnetic Information and Angular Rate Gyroscope

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0118] Table 1-1 The geomagnetic information of the Huayin area is: magnetic field strength M=52585.6nT, magnetic inclination I=53°14′33″, magnetic declination D=-3°58′33″. For convenience, the angle between the launch direction of the missile and the magnetic north is ψ, and the east direction of the magnetic north is taken as positive.

[0119] Through the simulation calculation performed by Matlab software, the components of the magnetic field strength on the projectile section are obtained under different launch directions and different pitch angles, as shown in Figure 6-1 and Figure 6-2 shown.

[0120] Depend on Figure 6-1 and Figure 6-2 It can be obtained that when the angle between the projectile axis and the magnetic north is smaller, or as the projectile pitches, when the angle between the projectile axis and the direction of the magnetic induction line is smaller, the magnetic field intensity component on the projectile section is smaller, and vice versa.

[...

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 provides a method for calculating the attitude of an aircraft by using geomagnetic information and an angular rate gyro. The method adopts an adaptive least square filtering method to determine a measurement noise covariance matrix according to the change of the angle between the longitudinal axis of the aircraft and the geomagnetic vector, In order to achieve the optimal estimation of the roll angle of the aircraft. The method uses geomagnetic information and angular rate gyroscope together to eliminate the influence of the measurement blind spot of the aircraft.

Description

technical field [0001] The invention relates to a method for calculating the attitude of a flying object by using geomagnetic information and an angular rate gyroscope, in particular to a method for calculating the spatial blind area and inherent deviation of the roll angle of the flying object by using the geomagnetic information and an angular rate gyroscope. Background technique [0002] Due to its small size, low cost, anti-interference and high overload resistance, the magnetoresistive sensor is widely used in the roll attitude measurement system of flying objects, especially missiles. However, when the axial direction of the missile is close to the magnetic north direction, there will be a large error in the calculation of the roll attitude. [0003] The reason for these errors is generally believed to be that when the projectile axis (x-axis) of the missile is close to the magnetic north direction, the component of the geomagnetic field on the section perpendicular to...

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): G01C1/00G01C21/00G01C21/08G01C21/18G01C21/20G05D1/08
CPCG01C1/00G01C21/005G01C21/08G01C21/18G01C21/20G05D1/0808
Inventor 王江李虹言林德福杨哲王伟王辉杨世超段鑫尧纪毅程文伯
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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