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Multi-directional dynamic deformation measurement method of ultra-thin wing

A measurement method, dynamic deformation technology, applied in the field of photomechanics and bionic micro air vehicle

Active Publication Date: 2021-10-22
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0004] Aiming at the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a multi-directional dynamic deformation measurement method of an ultra-thin wing to solve the problem of multi-directional and large-scale dynamic deformation monitoring of an ultra-thin wing in the prior art

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  • Multi-directional dynamic deformation measurement method of ultra-thin wing
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  • Multi-directional dynamic deformation measurement method of ultra-thin wing

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Embodiment Construction

[0022] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.

[0023] (1) figure 1 It is a multi-camera measuring device diagram of the present invention, which is mainly composed of a camera, a lens and a red light source:

[0024] When the dragonfly flies, each wing will appear flat, flipped, up, down, etc., and any set of 3D digital image correlation measurement devices cannot monitor a complete flapping cycle well, so it must be set up in multiple directions of the dragonfly. Multiple sets of three-dimensional digital image correlation measuring devices. Therefore, the present invention builds a non-contact, multi-directional red light illumination multi-camera measurement device, and three groups of three-dimensional digital image correlation meas...

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Abstract

The invention discloses a multi-directional dynamic deformation measurement method of an ultra-thin wing, which adopts a multi-camera digital image correlation method without additional speckles to measure the dynamic configuration of the ultra-thin wing and determine the dynamic law of the tethered flying dragonfly wing. Conduct experimental research. The present invention uses the criss-crossing veins and rich wrinkle structure of the ultra-thin wing itself as the features of digital image correlation matching, and solves the problem of wing quality and flight quality caused by additionally making speckle and feature points on the ultra-thin wing. The problem of behavior change; by building a non-contact, multi-directional dynamic three-dimensional deformation full-field measurement system composed of three sets of high-resolution industrial cameras and red light sources, it solves the problem that a single set of digital image correlation systems cannot The problem of realizing the global observation ensures the reliability of the multi-directional dynamic deformation measurement results of the extremely thin wings of dragonflies.

Description

technical field [0001] The invention belongs to the technical fields of optometry and bionic micro-aircraft, and in particular relates to a non-additional speckle multi-camera digital image correlation method suitable for deformation measurement of ultra-thin wings of live dragonflies. Background technique [0002] Digital Image Correlation (DIC) is a new type of non-contact optical measurement method, which is now used in many disciplines. It uses speckles randomly distributed on the surface of the measured object as the carrier, and determines the motion and deformation information of the object by tracking the speckles and analyzing the probability correlation before and after deformation. Usually, it is necessary to create artificial speckle on the surface of the measured object to make it have rich speckle features. However, dragonfly wings are extremely thin, with a thickness of about 1.58-4.08 μm. In the measurement of extremely thin biological films like dragonfly ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/16
CPCG01B11/16
Inventor 陈振宁孙伟
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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