Bending and torsional vibration detection and control device and method based on flexible hinged plate

A flexible articulation and torsional vibration technology, used in vibration testing, measuring devices, testing of machine/structural components, etc., can solve problems such as impact accuracy, vibration impact of the measured object, application limitations, etc., to achieve simple vibration displacement, model error, etc. Small, simple structure

CN106017839BActive Publication Date: 2019-05-14SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2019-05-14

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Abstract

The invention discloses a bending and torsional vibration detection control apparatus and method based on a flexible articulated slab. The bending and torsional vibration detection control apparatus comprises the flexible articulated slab, a piezoelectric ceramic sheet sensor, a piezoelectric ceramic sheet driver, an industrial camera, a piezoelectric charge type accelerometer, a computer, an optimum adjustment amplifier, a motion control card, a terminal board, a charge amplifier and a voltage amplifier, wherein the flexible articulated slab is formed by a first flexible board and a second flexible board which are connected together through hinges the piezoelectric ceramic sheet driver and the piezoelectric ceramic sheet sensor are pasted on the flexible boards, the second flexible board is provided with nine circular identifiers, and the industrial camera is arranged right before the free end of the flexible articulated slab. A binocular machine visually detects vibration of the circular identifiers on the flexible articulated slab to extract the vibration information of the articulated slab. The binocular machine realizes decoupling of bending and torsional vibration detection. In combination with an active control algorithm, active control of the bending and torsional vibration of the articulated slab structure is realized through driving control.
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Description

technical field

[0001] The invention relates to the field of vibration control of flexible hinged plates, in particular to a device and method for detecting and controlling bending and torsional vibrations based on flexible hinged plates. Background technique

[0002] With the rapid development of the economy in the 21st century, the aerospace industry has also achieved new development. Therefore, the structure of spacecraft tends to be larger, more flexible and less rigid. The flexible structure can increase the weight of the payload and improve the efficiency of the vehicle; the large structure can increase the space function and the flexibility of the design and manufacture of the spacecraft. In the field of aerospace, there is a large number of solar panels. The actual solar panels are connected by multiple rectangular panels. One end of the first panel is connected to the spacecraft, and the other end is connected to the second panel through a hinge, and the second pa...

Examples

Embodiment

[0057] Figure 1-Figure 6 As shown, a bending and torsional vibration detection and control device based on a flexible hinged plate, including

[0058] The flexible hinged board is composed of the first flexible board 6 and the second flexible board 8 connected by hinges to form a flexible hinged board. One end of the flexible hinged board is fixed on the test bench 1 by the mechanical support clamping device 2, which is called a fixed joint. end, the other end is a free end, and the mechanical support clamping device 2 is fixed on the experimental platform 1 to form the base of the entire experimental device.

[0059] Piezoelectric ceramic sheet sensor 3 is composed of two piezoelectric ceramic sheets, which are symmetrically pasted on the front and back sides of the first flexible board, and close to the fixed end side, 10mm away from the fixed end, one piece on each side and connected in parallel, and the attitude angle is Paste symmetrically at 0°, specifically on the mid...