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Autonomous Microrobotic Manipulation Using Visual Servo Control.

Matthew Feemster1, Jenelle A Piepmeier1, Harrison Biggs2

  • 1Weapons, Robotics, and Control Engineering Department, United States Naval Academy, Annapolis, MD 21402, USA.

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Summary
This summary is machine-generated.

This study applies visual servo control for microrobotic manipulation of polymer beads on fluid interfaces. The multiphase controller accurately positions beads using magnetic actuation, achieving high precision in experiments.

Keywords:
autonomous robotsmicroassemblymicromanipulatorsmobile robotsrobot control

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Area of Science:

  • Robotics
  • Fluid Dynamics
  • Materials Science

Background:

  • Microrobotic manipulation is crucial for microscale tasks.
  • Precise control of micro-objects on fluid interfaces presents unique challenges.
  • Visual servoing offers a promising approach for closed-loop control in micromanipulation.

Purpose of the Study:

  • To develop and apply a visual servo control method for microrobotic manipulation.
  • To achieve precise positioning of polymer beads on a 2D fluid interface using a magnetic microrobot.
  • To investigate a multiphase control strategy for different manipulation stages.

Main Methods:

  • Utilized a magnetic microrobot for actuating and manipulating non-magnetic polymer beads.
  • Implemented a visual servo control system for real-time positioning feedback.
  • Employed a multiphase controller with a filtering strategy for separation and positioning.
  • Conducted experiments on a two-dimensional fluid interface.

Main Results:

  • The microrobot successfully manipulated polymer beads to desired positions.
  • A multiphase controller with a specific filtering strategy enhanced positioning accuracy.
  • Achieved an average positional error of approximately 8 pixels (64 µm) over numerous trials.
  • Demonstrated the effectiveness of visual servo control in microrobotic tasks.

Conclusions:

  • The developed visual servo control method enables precise microrobotic manipulation of polymer beads.
  • The multiphase controller and filtering strategy are effective for complex manipulation tasks.
  • This approach offers a robust solution for micro-object positioning on fluid interfaces.