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Multi-flexible plate vibration detection device and method

A technology of vibration detection and flexible board, which is applied in the direction of measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve the problems of noise sensitivity and affecting accuracy, and achieve the effects of reducing vibration, improving detection accuracy, and increasing additional quality

Active Publication Date: 2018-11-06
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, the acceleration sensor is sensitive to noise, and there are problems such as hysteresis and temperature drift that affect its accuracy, and it can only measure the displacement of a certain point on the object. To obtain all the information, several acceleration sensors must be arranged on the hinged board.

Method used

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  • Multi-flexible plate vibration detection device and method

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Embodiment 1

[0041] like Figure 1 ~ Figure 4 As shown, this embodiment provides a multi-flexible board vibration detection device, which includes a first flexible board 1, a second flexible board 2, a third flexible board 3, a fourth flexible board 4, a fifth flexible board 5, The linear movement mechanism 6, the vibration detection mechanism and the control assembly, the vibration detection mechanism includes the first slide projector 7, the second slide projector 8, the first group of binocular vision systems 9, the second group of binocular vision systems 10, the first acceleration sensor 11, The second acceleration sensor 12, the third acceleration sensor 13 and the fourth acceleration sensor 14, figure 1 The dotted lines in the figure indicate the connection relationship between various devices, and the direction arrows indicate the transmission direction of the detection and control signal flow.

[0042] like Figure 1 to Figure 5 As shown, the first flexible board 1, the second f...

Embodiment 2

[0063] The main features of this embodiment are: there can be three flexible boards, and one of the flexible boards is also placed at the center, and the other two flexible boards are symmetrically arranged on the left and right sides of the flexible board. The structure can refer to the above-mentioned embodiment 1 The first flexible board, the second flexible board and the third flexible board, correspondingly, the number of acceleration sensors can be two; the number of flexible boards can also be seven, and one of the flexible boards is also placed in the center, and the remaining six flexible boards are symmetrical Set on the left and right sides of the flexible board, the structure of the five flexible boards can refer to the first flexible board, the second flexible board, the third flexible board, the fourth flexible board and the fifth flexible board in the above-mentioned embodiment 1, and the remaining The lower two flexible boards are respectively located above the ...

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Abstract

The present invention discloses a multi-flexible plate vibration detection device and method. The device comprises 2N+1 flexible plates, a linear travel mechanism, a vibration detection mechanism anda control module, one of the flexible plates is located at the central position, the other flexible plates are symmetrically arranged at two sides of the one of the flexible plates, the flexible plates are perpendicular to a horizontal plane and hinged together through a hinge to form a flexible hinge plate, and the flexible hinge plate is arranged on the linear travel mechanism; the vibration detection mechanism comprises two slide projectors, two sets of binocular vision systems and 2N acceleration sensors, each slide projector is configured to project mark points on the flexible hinge plate, each set of the binocular vision systems is configured to detect the mark point area of the corresponding slide projector on the flexible hinge plate, and each acceleration sensor is arranged on thecorresponding flexible plate. The multi-flexible plate vibration detection device and method can reflect the global features of the flexible hinge plate and provide a condition for the active vibration control based on the multiple sensors.

Description

technical field [0001] The invention relates to a vibration detection device, in particular to a multi-flexible board vibration detection device and method, belonging to the field of stiffness and vibration detection of flexible structures. Background technique [0002] Flexible structures are widely used in the fields of aerospace and industrial production. Compared with rigid structures, flexible structures have the advantages of light weight, low energy consumption, high efficiency, and flexible operation. However, the natural frequency of flexible structures is low, and low-frequency modal vibrations are easily excited. And other characteristics limit its application and development in certain fields. [0003] In the field of aerospace, there are a large number of solar panels. The actual solar panels are connected by multiple rectangular panels. One section of the first panel is connected to the spacecraft, and the other end is connected to the second panel through a h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H9/00G01H17/00
CPCG01H9/00G01H17/00
Inventor 邱志成余昆
Owner SOUTH CHINA UNIV OF TECH
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