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Spacecraft discontinuous structure fragment collision positioning method based on sound wave propagation path correction

A technology of propagation path and positioning method, which is applied to the analysis of solids using sound waves/ultrasonic waves/infrasonic waves, the use of sound waves/ultrasonic waves/infrasonic waves for material analysis, and instruments, etc. It can solve problems such as limited sound wave propagation and complex spacecraft structures. Improve positioning accuracy and facilitate timely repair

Pending Publication Date: 2022-05-31
TIANJIN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structure of the spacecraft is complex, there are discontinuous structures such as portholes, hatches, and penetrating parts, and the propagation of sound waves in them is limited. The traditional TDOA method is no longer suitable

Method used

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  • Spacecraft discontinuous structure fragment collision positioning method based on sound wave propagation path correction
  • Spacecraft discontinuous structure fragment collision positioning method based on sound wave propagation path correction
  • Spacecraft discontinuous structure fragment collision positioning method based on sound wave propagation path correction

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Embodiment Construction

[0029] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

[0030] A method for locating the collision of discontinuous structural debris of a spacecraft based on sound wave propagation path correction, the innovation of which is that the steps of the method are:

[0031] 1) Build a detection system: the detection system used in the positioning method includes a piezoelectric sensor, a signal amplifier, a signal acquisition card and a computer, and the piezoelectric sensor and the metal piece to be tested are installed together by a bracket, so that The penetrating part is the center of the circle, and four piezoelectric sensors are evenly distributed on the circumference of the same radius position of the center, and the four piezoelectric sensors are jointly connected to the signal amplifier, and th...

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Abstract

The invention relates to a spacecraft discontinuous structure debris collision positioning method based on sound wave propagation path correction, which can realize accurate positioning of debris collision of a spacecraft discontinuous structure, improve positioning accuracy and facilitate timely repair of spacecraft damage caused by space debris collision.

Description

technical field [0001] The invention belongs to the technical field of spacecraft structure health detection, and in particular relates to a collision positioning method for discontinuous structure fragments of spacecraft based on sound wave propagation path correction. Background technique [0002] Space debris is one of the important factors affecting the long-term sustainable development of human spaceflight activities. Unavoidable accidents in space, such as explosions or collisions caused by meteoroids and abandoned space facilities, will generate a large amount of space debris, which poses a safety hazard to the normal operation of spacecraft. In order to reduce the threat of space debris to spacecraft, it is important to quickly and accurately locate the position where debris collides with the spacecraft, detect the degree of collision, and repair it as appropriate. [0003] In isotropic structures, the localization of acoustic emission sources based on the time diff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04G01N29/44
CPCG01N29/041G01N29/048G01N29/4472G01N29/44G01N2291/023G01N2291/0423
Inventor 芮小博刘嘉成张宇綦磊张雯徐立鑫石宁波
Owner TIANJIN UNIV