Prototyping a Proportionally Electromagnetic Actuator with Wide Displacement of its Mobile Part

The paper is about the prototype of a proportional electromagnetic actuator (PEA) with wide displacement of its mobile part and the electronic driver for its control. The complexity of this electromagnetic device requires mathematical modeling and numerical simulations in the initial design phases. The actuator coil is powered by a PWM (Pulse Width Modulation) source. To verify the linear response of the PEA, in the experimental phase of the design, numerous tests were performed on the PWM rectangular pulse shape and on the displacement of the PEA mobile part, for the DC control voltage of the drive in the range of 0.75 V and 3.4 V, which may provide for displacements of up to 15 mm. Finally, the automatic control system for this device is presented.