Multichannel pulse high-current driver of magnetic actuator

Area of Science:

• Engineering
• Physics
• Biochemistry

Background:

• Magnetic linear actuators offer precise control via current regulation.
• Achieving high performance (force, acceleration, stroke) in small actuators requires significant electrical power.
• Existing systems may have limitations in power efficiency and control granularity for demanding applications.

Purpose of the Study:

• To develop a comprehensive, open-source magnetic linear actuator system.
• To enable precise control over actuator stroke sequences, timing, and force.
• To overcome the power limitations of small-dimensioned actuators.

Main Methods:

• Development of a system with movable iron magnetic actuators and a four-channel controller.
• Implementation of dedicated software with a graphical user interface (GUI) for designing stroke sequences.
• Utilizing high-current pulses to drive small-sized coils.

Main Results:

• The system successfully generates high force, acceleration, and stroke from small coils.
• The controller maintains a relatively safe voltage while delivering high current pulses.
• The GUI allows for detailed programming of piston stroke parameters (start time, duration, force).

Conclusions:

• The developed open-source system provides an efficient solution for high-performance magnetic linear actuation.
• The system is particularly suitable as a reagent syringe driver for kinetic studies.
• The versatile design allows for broad applicability in diverse scientific and non-scientific fields.