Quick calibration system of motion platform and calibration method

A motion platform and calibration system technology, which is applied to measuring devices, instruments, and optical devices, can solve the problems of high cost of laser interferometers, unsuitable platform calibration, and cumbersome setting process, so as to reduce manpower and material costs and simplify method steps. , the effect of improving work efficiency

Active Publication Date: 2018-05-25
俞庆平
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Problems solved by technology

This method has high precision, but the setting process is cumbersome, and the cost of the laser interferometer is high, it is not suitable for platform calibration in the batch production process, and it is difficult to use for automatic calibration

Method used

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  • Quick calibration system of motion platform and calibration method
  • Quick calibration system of motion platform and calibration method
  • Quick calibration system of motion platform and calibration method

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Embodiment Construction

[0039] The technical solution of the present invention will be clearly and completely described below in conjunction with specific implementation methods and accompanying drawings.

[0040] Such as figure 1 As shown, the rapid calibration system of the motion platform of the present invention includes a computer 1, a vision system 2, a high-precision calibration board 3 and a platform system 4 to be calibrated.

[0041] Computer 1 is one of personal computer, industrial computer or server. The computer is used for the calculation in the image processing process, the control of the automatic calibration process and the calculation of the final two-dimensional MAPPING data.

[0042] The vision system 2 includes a high-precision industrial camera 21, a light source 22, and a lens 23; the vision system 2 has corrected the lens distortion, and can calculate the relationship between the pixel difference and the physical length. The error introduced by the calculation result is abou...

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Abstract

The invention discloses a quick calibration system of a motion platform. The system is used for calibrating a motion platform of a direct writing type silk screen plate making system to improve the precision of the motion platform. The system comprises a computer, a visual system, a high-precision calibrating board, and a to-be-calibrated platform system. The invention also provides a method of calibrating the platform by using the system. The method includes the step of measuring errors of the system, the step of obtaining two-dimensional mapping data, and the step of inputting the data. Thehigh-precision calibrating board is adopted to correct errors, MAPPING between an original platform coordinate system and a theoretical platform coordinate system is established, MAPPING data is inputto a platform controller, and the platform controller directly finishes platform calibration on the basis of the received MAPPING data. The system is simple in structure, the steps of the method aresimplified, and the precision can reach positioning precision requirements. The calibration process of the method can be finished automatically, the work efficiency is high, and costs of manpower andmaterial resources are low.

Description

technical field [0001] The invention relates to the technical field of system motion platform calibration, in particular to a fast calibration system and calibration method for a motion platform. Background technique [0002] The accuracy of the motion platform has always been the key indicator of the laser direct writing screen printing system - the platform accuracy is related to the accuracy of the position where the graphics are transferred to the screen. If the platform error is too large, it will affect the image processing accuracy, and may even lead to failure to expose the correct image. The positioning accuracy of the motion platform is generally on the order of 1 μm to 2 μm, and the motion platform of the existing laser direct writing screen plate making system is generally self-assembled, coupled with various reasons such as material selection, the accuracy of the motion platform is often not up to to request. [0003] The accuracy of the motion platform cannot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00
CPCG01B11/00
Inventor 俞庆平
Owner 俞庆平
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