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Airborne IMU high-precision reference standard acquisition method based on wing deformation

A reference reference and acquisition method technology, applied in the field of flight wing deformation measurement, can solve the problems affecting the modal frequency and flutter characteristics, and the airborne IMU reference cannot be accurately determined, and achieve strong versatility, simple and convenient operation, and skill less demanding effect

Active Publication Date: 2020-12-18
SOUTHEAST UNIV
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Problems solved by technology

Distributed load antennas will generate random jitter errors with the deflection and flutter of the airborne platform's wings. These factors will make the benchmark of the airborne IMU unable to be accurately determined. Mode frequency and flutter characteristics

Method used

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  • Airborne IMU high-precision reference standard acquisition method based on wing deformation
  • Airborne IMU high-precision reference standard acquisition method based on wing deformation

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Embodiment Construction

[0025] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0026] As shown in the figure, an airborne IMU high-precision reference datum acquisition method based on wing deformation described in the present invention includes the following six steps:

[0027] Step (1), determine the finite element model, and conduct modal experiments: determine the three-dimensional model for the selected type of aircraft, initially determine the finite element model of the aircraft according to the model, and then conduct pure modal experiments for the selected type of aircraft to determine The modal parameters of each order of the aircraft structure;

[0028] Step (2), determine the finite element model of wing dynamics: obtain the modal pa...

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Abstract

The invention discloses an airborne IMU high-precision reference standard acquisition method based on wing deformation. The method comprises the following steps that a finite element model is established, a ground resonance experiment is conducted, then the layout of FBG sensors is designed, space coordinates of all points on a wing are determined according to measured data, and finally a reference standard is determined. According to the invention, the application of providing the reference standard for the airborne IMU based on the FEM technology and the FBG sensing technology is realized, the reference standard of the IMU can be quickly determined, and the universality is high.

Description

technical field [0001] The invention belongs to the technical field of flight wing deformation measurement, and in particular relates to an airborne IMU high-precision reference datum acquisition method based on wing deformation. Background technique [0002] With the improvement of the imaging resolution of the aerial observation system and the demand for three-dimensional images, the single-position attitude measurement system adopted by the traditional aerial observation system can no longer meet the demand, and the single-load observation mode gradually shifts to multiple loads and multi-type loads Schema development, i.e. distributed load. Distributed load antennas will generate random jitter errors with the deflection and flutter of the airborne platform's wings. These factors will make the benchmark of the airborne IMU unable to be accurately determined. modal frequencies and flutter characteristics. Contents of the invention [0003] In order to solve the above p...

Claims

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Application Information

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IPC IPC(8): G06F30/15G06F30/23G06F113/28G06F119/14
CPCG06F30/15G06F30/23G06F2113/28G06F2119/14Y02T90/00
Inventor 陈熙源马振王俊玮方琳
Owner SOUTHEAST UNIV
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