Selective Magnetic Field Generation Method for Effective Manipulation of Two-Dimensional Magnetic Microrobots Using a...

Area of Science:

• Robotics
• Biomedical Engineering
• Electromagnetism

Background:

• Magnetic microrobots offer potential for minimally invasive procedures.
• Precise control of microrobots is crucial for targeted applications.
• Existing methods for microrobot manipulation often face limitations in accuracy and energy efficiency.

Purpose of the Study:

• To develop an accurate and energy-efficient method for 2D magnetic microrobot manipulation.
• To leverage the unique properties of a triad of electromagnetic coils (TEC) for enhanced control.
• To propose effective calculation methods and operating procedures for TEC-based microrobot control.

Main Methods:

• Utilized a triad of electromagnetic coils (TEC) arranged in a triangular formation.
• Developed a selective coil activation strategy based on microrobot position, direction, and manipulating conditions.
• Employed structural characteristics and magnetic field distribution patterns of the TEC for precise control.
• Verified results through simulations and experimental testing with a closed-loop control system.

Main Results:

• The proposed method effectively generated actuation forces using one or two TEC coils, depending on conditions.
• Achieved improved precision in magnetic field generation and reduced energy consumption.
• Demonstrated superior performance compared to existing methods in controlling microrobots over various paths.
• Experimental validation confirmed the method's effectiveness and superiority.

Conclusions:

• The TEC-based method offers a significant advancement in magnetic microrobot manipulation.
• The selective coil activation strategy enhances control precision and energy efficiency.
• This approach holds promise for future applications in microrobotics and targeted therapies.