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An X-ray object image point autonomous precision tracking control system and method

A tracking control and control system technology, applied in the general control system, control/regulation system, adaptive control, etc., can solve the problems of smaller magnification, image distortion, and larger range, so as to achieve clear and accurate X-ray imaging The effect of small deviation of affine change

Active Publication Date: 2017-04-05
SOUTH CHINA UNIV OF TECH
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AI Technical Summary

Problems solved by technology

The focus distance between the focus of the light pipe and the object to be detected will change, the range projected by the object to be detected will become larger, and the magnification will decrease at the same time, resulting in distortion of the image after rotation

Method used

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  • An X-ray object image point autonomous precision tracking control system and method
  • An X-ray object image point autonomous precision tracking control system and method
  • An X-ray object image point autonomous precision tracking control system and method

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Embodiment Construction

[0069] An autonomous precision tracking control system for X-ray object image points, such as figure 1 , 2 , 3, including stage 1, transmission device, ray generating device 2, image detector 3, image processing device, built-in measuring device and control system, wherein

[0070] The stage 1 includes a fixing part 9 and a tray 10 which is arranged on the fixing part 9 and can rotate 360 ​​degrees, and the object to be measured is placed on the tray 10;

[0071] The transmission device includes X-axis 4, Y-axis 5, Z-axis and R-axis 6 respectively connected to the stage fixture 9, wherein X-axis 4 drives the stage 1 to move left and right, and Y-axis 5 drives the stage 1 Back and forth movement, Z axis drives the stage 1 to rise and fall, R axis 6 drives the stage 1 to rotate left and right by 60 degrees, the rotating shaft fixedly connected to the tray 10 drives the tray to rotate 360 ​​degrees, and drives the ray generating device 2 to rise and fall Axis one 7, transmissio...

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Abstract

The invention discloses an X-ray object point independent precision tracking control system which is characterized by comprising an objective table, a transmission device, a ray generating device, an image detector, an image processing device, an internally-arranged measuring device and a control system. A position signal of a detected object is automatically identified through the image detector and the image processing device, seven-shaft linkage precision tracking object points of the transmission device are controlled through the control system, 3D tomography imaging of the detected object is independently completed, and when deviation occurs in X-ray imaging, according to the measuring result of the internally-arranged measuring device, the designed robust controller is applied to be suitable for adjusting ascending and descending of the objective table, the X-Y translation and left-and-right rotation so as to enable the X-ray imaging to be clear. The system and method are precise in displacement and positioning, free of accumulative error, and high in precision.

Description

technical field [0001] The invention relates to the field of high-speed and high-precision visual inspection / control integration in the process of precision electronic packaging, and in particular to an autonomous precision tracking control system and method for X-ray object points. Background technique [0002] As a conventional non-destructive testing method, X-ray flaw detection has been widely used in industrial production process inspection and in-use product inspection. As an X-ray imaging method, computed tomography takes a large number of two-dimensional X-ray images when an object rotates around an axis, and then uses mathematical processing of geometric figures to generate a three-dimensional virtual model of the object. [0003] However, during the rotation scanning process of the stage, if the linkage control of the stage, image detector and X-RAY source is improperly coordinated, it will have a serious impact on 3D CT reconstruction. For example, during the rot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D3/12G05B13/04
Inventor 胡跃明高红霞马鸽章熙春袁鹏
Owner SOUTH CHINA UNIV OF TECH
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