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Multi-flexible-hinged-plate rotating vibration detection device and method

A flexible hinge and vibration detection technology, which is applied in the direction of measuring devices, vibration testing, machine/structural component testing, etc., can solve the problems of noise sensitivity and affecting accuracy, so as not to change the structural characteristics, improve the detection accuracy, and increase the structural attachment. quality effect

Active Publication Date: 2018-10-23
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, multiple acceleration sensors must be arranged on the flexible board.

Method used

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  • Multi-flexible-hinged-plate rotating vibration detection device and method
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  • Multi-flexible-hinged-plate rotating vibration detection device and method

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Embodiment 1

[0039] Such as Figure 1 ~ Figure 4 As shown, the present embodiment provides a multi-flexible hinged plate rotational vibration detection device, which includes a first flexible hinged plate 1, a second flexible hinged plate 2, a rotating mechanism 3, a vibration detection mechanism and a control assembly, and the vibration detection mechanism Including two sets of binocular vision systems and two sets of acceleration sensors, 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.

[0040] The first flexible hinged board 1 and the second flexible hinged board 2 are symmetrically arranged left and right, wherein the first flexible hinged board 1 includes a first flexible board 101, a second flexible board 102 and a third flexible board 103, and the second flexible board 102 and the third flexible board 103 are located on the fro...

Embodiment 2

[0062] The main features of this embodiment are: the number of flexible boards of the first flexible hinged board can also be five pieces, similarly, the number of flexible boards of the second flexible hinged board is also five pieces, and the structure of three flexible boards of the first flexible hinged board You can refer to the first flexible board, the second flexible board and the third flexible board in the above-mentioned embodiment 1, and the remaining two flexible boards are respectively located at the front side of the second flexible board and the rear side of the third flexible board, and the second flexible board The structures of the three flexible boards of the hinge board can refer to the fourth flexible board, the fifth flexible board and the sixth flexible board in the above-mentioned embodiment 1, and the remaining two flexible boards are respectively located on the front side of the fifth flexible board and the sixth flexible board. The rear side of the f...

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Abstract

The invention discloses a multi-flexible-hinged-plate rotating vibration detection device and method, and the device comprises two flexible hinged plates, a rotating mechanism, a vibration detection mechanism and a control assembly. The two flexible hinged plates are symmetrically disposed on the rotating mechanism, and each flexible hinged plate comprises 2N+1 flexible plates which are hinged together, wherein each flexible plate is provided with a plurality of mark points through pasting. The vibration detection mechanism comprises two groups of binocular vision systems and two groups of acceleration sensors, wherein the two groups of binocular vision systems, the two groups of acceleration sensors and the two flexible hinged plates are corresponding in a one-to-one manner. Each binocular vision system is used for detecting a mark point region on the corresponding flexible hinged plate, and each acceleration sensor is disposed on the corresponding flexible hinged plate. The control assembly is connected with the rotating mechanism, the binocular vision systems and the acceleration sensors. The device effectively eliminates the impact on a vibration control effect from other uncontrollable factors, and provides conditions for the research of the control of the active vibration based on multiple sensors.

Description

technical field [0001] The invention relates to a vibration detection device, in particular to a multi-flexible hinged plate rotation vibration detection device and method, belonging to the field of stiffness, rotation and vibration detection of flexible structures. Background technique [0002] Compared with the rigid structure, the flexible structure has the advantages of light weight, low energy consumption, high efficiency, and flexible operation. However, the natural frequency of the flexible structure is low, and the low-frequency modal vibration is easily excited, which limits its application in some fields. application and development. In the aerospace field, a large number of solar panels are used. In general, 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 hinge. The same way is connected with the third sail board; like this, a pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/02
CPCG01M7/025Y02T90/00
Inventor 邱志成余昆
Owner SOUTH CHINA UNIV OF TECH
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