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Flexible truss vibration detection device and method

A technology of vibration detection and truss, which is applied in measuring devices, using electrical devices, and measuring ultrasonic/sonic/infrasonic waves, etc., can solve problems such as insufficient image contrast, reduce the difficulty of construction, make up for insufficient image contrast, and reduce experimental costs.

Pending Publication Date: 2018-10-26
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[0006] The purpose of the present invention is to solve the defects of the above-mentioned prior art, and provide a flexible truss vibration detection device, which uses vision and acceleration sensors to detect the flexible truss, by combining the advantages of the two detection methods, it not only compensates The shortcomings of visual inspection in the case of insufficient image contrast in the case of insufficient lighting conditions also demonstrate the flexibility and good adaptability of visual inspection

Method used

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  • Flexible truss vibration detection device and method
  • Flexible truss vibration detection device and method
  • Flexible truss vibration detection device and method

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Embodiment 1

[0040] Such as Figure 1 ~ Figure 4 As shown, this embodiment provides a flexible truss vibration detection device, which includes a flexible truss 1, a piezoelectric driving mechanism, and a vibration detection mechanism.

[0041] Such as Figure 1 ~ Figure 5 As shown, the flexible truss 1 is assembled by eighty-eight flexible rods of the same material but not exactly the same size. Its cross-section is rectangular and has a seven-layer structure. Specifically, each layer structure consists of sixteen flexible rods. The sixteen flexible rods include eight horizontal flexible rods 101, four vertical flexible rods 102, and four inclined flexible rods 103, of which four horizontal flexible rods 101 and the other four horizontal flexible rods 102 are arranged symmetrically up and down , Four vertical flexible rods 102 and eight horizontal flexible rods 101 form a cube. The four inclined flexible rods 103 are respectively arranged on the four sides of the cube, and the four horizontal...

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Abstract

The invention discloses a flexible truss vibration detection device and method. The device comprises a flexible truss, a piezoelectric driving mechanism and a vibration detection mechanism. The piezoelectric driving mechanism is connected with the flexible truss and used for driving the flexible truss to vibrate; the vibration detection mechanism comprises a binocular vision system, an operating platform, an acceleration sensor and processing equipment; the binocular vision system is arranged on the operating platform and used for detecting a mark point area of the flexible truss; the acceleration sensor is arranged on the flexible truss; the processing equipment is connected with the binocular vision system and the acceleration sensor. The flexible truss is detected by vision and the acceleration sensor, and by advantage combination of the two detection modes, the defect of low image contrast of vision detection under the condition of light insufficiency is overcome while flexibilityand high adaptability of vision detection are shown.

Description

Technical field [0001] The invention relates to a vibration detection device, in particular to a flexible truss vibration detection device and method, and belongs to the field of vibration detection of spatial extension structures. Background technique [0002] Flexible structure is widely used in the fields of aerospace and industrial production. Compared with rigid structure, it has the advantages of light weight, low energy consumption, high efficiency, and flexible operation. However, the natural frequency of flexible structure is low, and low-frequency modal vibration is easily agitated. It limits its application and development in spacecraft antennas and windsurfing boards. [0003] In recent years, people's research on spacecraft structure has become a research focus and hot topic. Due to the limited increase in the carrying capacity of the rocket, the use of flexible structures for antennas is the first choice. The application of the flexible truss in space is mainly in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H9/00G01H11/06
CPCG01H9/00G01H11/06
Inventor 邱志成吴郭烽
Owner SOUTH CHINA UNIV OF TECH
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