Electromagnetic Actuation for a Micro/Nano Robot in a Three-Dimensional Environment.

Area of Science:

• Biomedical Engineering
• Robotics
• Control Systems

Background:

• Micro/nanorobots offer promising biomedical applications like targeted drug delivery and minimally invasive procedures.
• Precise navigation and control of these robots within complex biological environments, such as blood vessels, remain a significant challenge.

Purpose of the Study:

• To develop and validate a precise path-tracking system for magnetic micro/nanorobots in three-dimensional space.
• To enhance the controllability of micro/nanorobots for biomedical applications through advanced algorithms and actuation.

Main Methods:

• A 3D electromagnetic actuation system was designed, incorporating three pairs of Helmholtz coils and three pairs of Maxwell coils.
• A closed-loop control algorithm was developed to improve the trajectory tracking accuracy of micro/nanorobots.
• Simulink simulations were performed to test the algorithm's performance with various 2D and 3D trajectories.

Main Results:

• The proposed electromagnetic actuation system and closed-loop control algorithm demonstrated effective trajectory tracking for micro/nanorobots.
• Simulations confirmed the system's ability to follow desired paths with a maximum tracking error of 13 μm.
• The system showed robust performance across different simulated trajectories.

Conclusions:

• The integrated system of electromagnetic actuation and a closed-loop algorithm significantly enhances the precise control of micro/nanorobots.
• This advancement is crucial for realizing the potential of micro/nanorobots in demanding biomedical applications.
• The validated system provides a foundation for future development in robotic-assisted medical interventions.