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Related Concept Videos

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Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2
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High-Precision Visual Servoing for the Neutron Diffractometer STRESS-SPEC at MLZ.

Martin Landesberger1,2, Oguz Kedilioglu3, Lijiu Wang1

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|May 11, 2024
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Summary

This study introduces a novel visual servoing system using an industrial robot and multi-camera tracking to achieve precise sample positioning for neutron diffraction. The system enhances flexibility and accuracy for non-destructive analysis of metallic components.

Keywords:
automationcomputer visionhigh accuracyneutron diffractionresidual stress analysisroboticstexture analysisvisual servoing

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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Robotics

Background:

  • Neutron diffraction enables non-destructive analysis of local stress and texture in metallic components.
  • Accurate sample positioning is critical for repeated measurements at the same location from multiple angles.
  • Existing XYZ tables and Eulerian cradles offer limited flexibility and range of motion.

Purpose of the Study:

  • To develop a flexible and highly accurate sample positioning system for neutron diffraction.
  • To achieve absolute positioning accuracy better than 50μm.
  • To enable fully automatic measurement procedures through digital twin integration.

Main Methods:

  • Implementation of a visual servoing system combining an industrial six-axis robot with a high-precision multi-camera tracking system.
  • Development of a digital twin to integrate instrument and sample data for automated measurements.
  • Utilizing the robot's flexibility and the camera system's accuracy for precise object handling.

Main Results:

  • The proposed system aims for an absolute positioning accuracy below 50μm.
  • Integration of a digital twin facilitates automated measurement workflows.
  • The system offers enhanced flexibility compared to traditional positioning systems.

Conclusions:

  • The visual servoing system provides a flexible and accurate solution for sample positioning in neutron diffraction.
  • This technology has broader applications in fields requiring precise object manipulation, such as robotic surgery and 3D printing.
  • The digital twin integration enables efficient and automated experimental procedures.