A computer vision-based test method for plane wind-induced vibration response of aeroelastic model wind tunnel test

Abstract

The invention provides an aero-elastic model wind tunnel experiment plane wind-induced vibration response testing method based on computer vision. Compared with the traditional wind tunnel aero-elastic model testing method, the aero-elastic model wind tunnel experiment plane wind-induced vibration response testing method based on the computer vision provided by the invention has the following advantages: (1) the problems that an experimental error is produced by performing structure dynamic response measurement through the adoption of an accelerometer and a displacement sensor and the multi-point synchronous measurement cannot be performed are overcome; (2) compared with binocular vision and multi-vision, the testing method has the characteristics of being convenient, efficient and low incost, and is suitable for aero-elastic model plane wind-induced vibration response testing in the wind tunnel experiment; (3) the testing method is strong in applicability, and can realize a demand offlexibly placing a camera out of a wind tunnel laboratory; and (4) a wind-induced dynamic response characteristic of the aero-elastic model is considered, the problem that the current existing monocular vision algorithm is insufficient in precision in the wind tunnel aero-elastic model experiment is solved, and the wind-induced displacement and the acceleration response of the aero-elastic modelcan be precisely and synchronously acquired.

Description

technical field [0001] The invention relates to a method for testing plane wind vibration response of an aeroelastic model wind tunnel test based on computer vision. Background technique [0002] Wind tunnel test is a kind of experimental method to simulate the gas flow around the object by artificially generating and controlling the air flow, so as to study the aerodynamic response and characteristics of the object. In the field of civil engineering, wind tunnel tests have been widely used in the wind load and response assessment of super high-rise buildings, long-span space structures, bridges, transmission lines, etc. Wind tunnel tests are mainly divided into rigid model tests and aeroelastic model tests. In aeroelastic model tests, the wind-induced response of the model needs to be measured, mainly including the displacement and acceleration responses of the model under different wind speeds, wind direction angles, and landform environments. [0003] For tall and flexib...

AI Technical Summary

Problems solved by technology

[0013] (1) Solve the experimental error caused by using accelerometer and laser displacement meter to measure the structural dynamic response in the traditional aeroelastic model wind tunnel test, and the problem that multi-point synchronous measurement cannot be performed;

[0015] (3) Solve the problem of poor applicability of existing monocular vision algorithms in wind tunnel tests, and realize the requirement that cameras can be placed flexibly outside the wind tunnel laboratory;

[0016] (3) To solve the problem of insufficient accuracy of the existing monocular vision algorithm in the wind tunnel test, and realize the accurate and simultaneous measurement of the wind-induced displacement and acceleration response of the aeroelastic model;

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