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Vision-assisted micromanipulation using closed-loop actuation of multiple microrobots.

M Arifur Rahman1, Noboru Takahashi2, Kawai F Siliga1

  • 1Department of Electrical Engineering, University of Hawaii at Manoa, 2540 Dole Street, Holmes Hall 483, Honolulu, HI 96822 USA.

Robotics and Biomimetics
|November 21, 2017
PubMed
Summary
This summary is machine-generated.

This study introduces a vision-assisted control system for precise micromanipulation using multiple bubble microrobots. The system enables simultaneous, independent motion for complex tasks like cell manipulation.

Keywords:
CagingClosed-loop controlGrasp planningMicromanipulationMicrorobotOpto-thermocapillary flowPath planning

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Area of Science:

  • * Micro-robotics and Nanotechnology
  • * Control Systems Engineering
  • * Biomedical Engineering

Background:

  • * Precise control of microrobots is crucial for micromanipulation tasks.
  • * Simultaneous actuation of multiple microrobots demands robust control systems for independent motion.

Purpose of the Study:

  • * To demonstrate a hybrid closed-loop vision-assisted control system for simultaneous microrobot actuation.
  • * To enable precise positioning of multiple microrobots around micro-objects for manipulation.
  • * To assess the system's suitability for single-cell micromanipulation.

Main Methods:

  • * Development of a vision-assisted grasp-planning application for trajectory calculation.
  • * Implementation of a particle-tracking application with image feedback for precise positioning.
  • * Utilization of closed-loop image feedback for real-time microrobot position updates and trajectory following.

Main Results:

  • * Successful simultaneous actuation and precise positioning of four microrobots to cage a micro-object.
  • * Demonstrated micromanipulation by transporting the caged micro-object to a new location.
  • * Validated the system's capability for complex micromanipulation tasks.

Conclusions:

  • * The developed hybrid closed-loop control system effectively enables simultaneous, precise micromanipulation using multiple bubble microrobots.
  • * The system shows significant promise for applications in single-cell manipulation and other micro-assembly tasks.