Magnetic Field Synthesis Control Device Using Minimum Infinity-Norm Current Solution

This technology is a magnetic field synthesis control device that forms a magnetic field of a specific direction and intensity at a desired location by controlling the current applied to multiple coils. It determines the optimal current command within the rated current limit using a minimum infinity-norm current solution.

Previously, limitations in coil rated current often caused the synthesized magnetic field to decrease in magnitude or deviate from the intended direction.

This technology proposes a method that calculates a first current command using the least squares method and a second current command that minimizes the infinity-norm, determining the optimal current command within the rated current limit. This enables stable control that maximizes magnetic field synthesis performance without exceeding coil ratings. It can be utilized as a core control technology to maximize coil performance in fields requiring precise magnetic field control, such as magnetically driven microrobots, precision medical devices, and magnetic levitation systems.

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Key Features:

• Control device that forms a magnetic field of a specific direction and intensity by controlling current applied to multiple coils
• Configuration for calculating a first current command using the least squares method
• Configuration for calculating a second current command that minimizes the infinity-norm of the current
• Maximizes magnetic field synthesis performance by determining the optimal current command within the rated current limit