Double-flexible-cantilever-beam vibration measurement and control device and method based on laser binocular vision

A flexible cantilever, measurement and control device technology, applied in the direction of measuring devices, electrical devices, mechanical oscillation control, etc., can solve the problems of affecting the experimental effect, adding additional mass to the cantilever beam, changing the structural characteristics of the beam, etc., to achieve good monochromaticity, Easier image processing and improved measurement accuracy

Active Publication Date: 2017-12-01
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

However, both belong to the category of contact measurement, which will add additional mass to the cantilever beam, thereby changing the structural characteristics of the beam and affecting the experimental results

Method used

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  • Double-flexible-cantilever-beam vibration measurement and control device and method based on laser binocular vision
  • Double-flexible-cantilever-beam vibration measurement and control device and method based on laser binocular vision
  • Double-flexible-cantilever-beam vibration measurement and control device and method based on laser binocular vision

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Experimental program
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Effect test

Embodiment

[0039] Such as Figure 1-Figure 5 As shown, a double flexible cantilever beam vibration measurement and control device based on laser binocular vision, including a flexible cantilever beam body part, a detection part and a drive control part;

[0040] The body part of the flexible cantilever beam includes two flexible cantilever beams arranged in series, specifically a first flexible cantilever beam and a second flexible cantilever beam, wherein one end of the first flexible cantilever beam 5 is fixed on the side of the first planetary reducer 4 by a splint. On the output shaft connector, this end is called the fixed end, which is driven and controlled by the first servo motor 3 to form the boom of the double flexible cantilever beam, and the other end is called the free end, which is used to connect to the next level of drive.

[0041] The second servo motor 6 and the second planetary reducer 7 are fixed on the free end of the first flexible cantilever beam 5, and one end of ...

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Abstract

The invention discloses a double-flexible-cantilever-beam vibration measurement and control device and method based on laser binocular vision. The device comprises two flexible cantilever beams connected in series. The flexible cantilever beams are provided with piezoelectric ceramic drivers, piezoelectric ceramic sensors and accelerometers. The device also comprises a line laser, an industrial camera, a servo motor and a planetary speed reducer. The line laser generates a laser light resource, and combined with the industrial camera, in a complete non-contact mode, the bending vibration of the cantilever beams is detected. The speed of the servo motor is reduced by the planetary speed reducer, and the servo motor is used for controlling the rotation of the cantilever beams, receiving a vibration suppression signal obtained by a vibration control algorithm and suppressing the vibration of the cantilever beams at the same time. The device can be used for the vibration measurement and control of a space flexible joint, laser is used as the light resource without the affection of sun light, thus the working stability is maintained, and a reference is provided for the vibration measurement and vibration suppression of a flexible aerospace structure.

Description

technical field [0001] The invention relates to the field of vibration control, in particular to a dual-flexible cantilever beam vibration measurement and control device and method based on laser binocular vision. Background technique [0002] Flexible materials are widely used in practical engineering because of their light weight, low stiffness, and high flexibility. Rotating flexible cantilever beams are more common in the fields of industrial production and aerospace engineering, and their applications are mainly reflected in mechanical structures such as spacecraft flexible joints and flexible robotic arms. Compared with the rigid manipulator, the flexible arm is lighter, so it can reduce energy consumption and improve efficiency; however, because the flexible arm has a slender structure and less rigidity, its stability is not as good as that of the rigid arm. Taking space flexible robots and spacecraft flexible joints as examples, self-excitation and external disturba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H11/08G01H9/00G05D19/02
CPCG05D19/02G01H9/00G01H11/08Y02T90/00
Inventor 邱志成肖骏
Owner SOUTH CHINA UNIV OF TECH
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