Noncontact Speed Sensor for Maintaining the Autoresonant Operating Mode of the Oscillating Electric Motor Drive

To implement the resonant operating modes of the electric motor drive, the simplest speed sensor of swinging movement has been developed. The sensor comprises a cylindrical body with a lid, wherein a magnetic circuit with two ring-type half-windings with a polar pitch equal to π, a salient-pole rotor with permanent magnets with a single pair of poles and a sliding bearing are installed in the body. The paper also discloses an example of a closed-loop control system for controlling the autoresonant electric motor drive of swinging movement using this type of sensor.