DEVICE TO MEASURE ANGULAR SPEED OF MAGNETIC FIELD ROTATION Russian patent published in 2015 - IPC G01R31/34 

FIELD: measurement equipment.

SUBSTANCE: invention relates to measurement equipment and is intended to measure the angular speed of magnetic field rotation. The device comprises a ferromagnetic rotor and a magnetically conducting stator, besides, the rotor is made in the form of a cylinder with an axis of rotation, in the middle part of which there is a rotor magnetisation winding, placed axisymmetrically and in a contactless manner, connected to an adjusted DC source measured by an ammeter; the magnetically conducting stator is made in the form of two cylinders, axes of which match the axis of the rotor rotation. On each stator there is a winding, besides, a part of each turn of the winding is located in a gap between the rotor and the stator. Specified parts of the turns are arranged at a certain distance from the stator inside the magnetic gap. The rotor is put in rotary motion with a synchronous AC motor with an adjusted frequency of rotation measured by a frequency meter, and the electromotive force of induction arising in the stator winding is measured by a recording voltmeter.

EFFECT: possibility to determine the speed of magnetic field rotation.

2 dwg