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Vibration control device and method for flexible hinged plates based on binocular vision measurement

A binocular vision measurement, flexible articulation technology, applied in the direction of program control, computer control, general control system, etc., can solve the problems of complicated calculation process, small measurement range of photoelectric position sensor, difficult operation, etc., to achieve accurate measurement results, Solve the problem of vibration measurement and realize the effect of vibration decoupling

Active Publication Date: 2017-09-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of piezoelectric materials and shape memory alloys is limited due to factors such as their own strength, fatigue life and temperature resistance; acceleration sensors and angular rate gyroscope sensors are sensitive to noise and can only measure the displacement of a certain point on the object information; the photoelectric position sensor has a small measurement range, complex structure, difficult operation, cumbersome calculation process and high cost

Method used

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  • Vibration control device and method for flexible hinged plates based on binocular vision measurement
  • Vibration control device and method for flexible hinged plates based on binocular vision measurement
  • Vibration control device and method for flexible hinged plates based on binocular vision measurement

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Embodiment 1

[0032] Such as figure 1 As shown, the present embodiment provides a vibration control device for a flexible hinged board based on binocular vision measurement, including a flexible hinged board body, a vibration detection part, a drive control part, a signal processing module, and a computer; the flexible hinged board body consists of Two flexible boards of the same material are connected together by a hinge (3) (such as figure 2 shown), one end of the formed flexible hinged plate body is clamped in the air by a mechanical clamping device on the support fixed on the horizontal test bench I, the flexible hinged plate body is perpendicular to the horizontal plane, and the other end is a free end; the vibration detection part includes The camera detection part and multiple acceleration sensors (2), the camera detection part includes two industrial cameras (1) and a slide projector (5), the two industrial cameras (1) are fixed on the horizontal test bench II through slide rails, ...

Embodiment 2

[0037] This embodiment provides a method for controlling the vibration of a flexible hinged plate based on binocular vision measurement, including the following steps:

[0038] 1. Turn on the slide projector (5) to project the light spot of the mark point on the flexible hinged board body, use the industrial camera (1) and the acceleration sensor (2) to detect the vibration of the flexible hinged board body, and obtain the corresponding vibration signal;

[0039] In this step, the flow chart of the industrial camera (1) calibrating the light spot of the marker point is as follows: image 3 shown, including the following steps:

[0040] The first step is to establish a coordinate system: take the midpoint O of the front surface of the second flexible board w As the coordinate origin, establish the world coordinate system O W -X W Y W Z W ; Take the optical center O of the camera c As the origin, establish the camera coordinate system O c -X c Y c Z c ;Take the first p...

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Abstract

The invention discloses a vibration control device and method for flexible hinged plates based on binocular vision measurement. The device comprises a flexible hinged plate body, a vibration detection part, a drive control part, a signal processing module and a computer, wherein the flexible hinged plate body is composed of two flexible plates made of same material through a hinge together; the vibration detection part comprises a plurality of acceleration sensors, two industrial cameras and a slide projector; the drive control part comprises a plurality of piezoelectric plate drivers; the vibration detection part is used for detecting the vibration signal of the flexible hinged plate body, the vibration signal is input into the computer through the signal processing module, the computer is used for operating a corresponding active control algorithm, and the vibration signal is output to the drive control part through the signal processing module so as to restrict the vibration of the flexible hinged plate body. According to the vibration control device, complete non-contact measurement for hinged plate vibration is realized by adopting a method in combination with slide projector projection mark points and camera detection, so that the measuring result is more accurate.

Description

technical field [0001] The invention relates to the field of positioning and vibration control of flexible structures, in particular to a vibration control device and method for a flexible hinged plate based on binocular vision measurement. Background technique [0002] Flexibility and enlargement are an important development trend of various aerospace structures. Light structure means that the weight of payload can be increased, and large structure makes the design and manufacture of spacecraft more flexible. However, due to the low stiffness and high flexibility of large-scale flexible structures, when running in space without external resistance, they are very vulnerable to external excitations and produce long-lasting low-frequency and high-amplitude vibrations. Therefore, the vibration analysis and analysis of large-scale flexible structures Control studies are necessary. [0003] In the existing technology, flexible board structures are usually used to simulate space ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/25257Y02E10/50
Inventor 邱志成王涛先
Owner SOUTH CHINA UNIV OF TECH
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