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An Enhanced Electromagnetic Manipulation System with a Large Workspace, High-Gradient Magnetic Actuation, and
Junkai Zhang1, Zerui Li1, Yukun Zhong1
1Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
Micromachines
|July 28, 2026
Summary
This study introduces an enhanced electromagnetic manipulation system (EEMS) for microrobotics. The EEMS offers a large workspace and strong magnetic fields with efficient heat dissipation, enabling precise control for advanced applications.
Area of Science:
- Robotics and Automation
- Biomedical Engineering
- Electromagnetism
Background:
- Magnetic actuation is crucial for micro/nanorobotics and biomedical manipulation.
- Existing systems face trade-offs between magnetic field strength, workspace size, and heat management.
Purpose of the Study:
- To develop an enhanced electromagnetic manipulation system (EEMS) overcoming performance limitations.
- To achieve a large, controllable workspace with efficient thermal management.
Main Methods:
- Designed a compact, high-efficiency magnetic circuit with an optimized six-electromagnet configuration.
- Integrated high-permeability structural components and utilized finite-element-based optimization.
- Conducted experiments to measure magnetic field parameters and thermal performance.
Main Results:
- Achieved a spherical workspace of 106 mm diameter.
- Demonstrated magnetic flux densities up to 300 mT and gradients up to 9.5 T/m.
- Confirmed safe operation below human body temperature without active cooling.
Conclusions:
- The EEMS provides strong, controllable magnetic fields within a large workspace.
- The system exhibits efficient heat dissipation, suitable for continuous operation.
- Validated precise motion control and force balancing for advanced microrobotic applications.
