FIELD: electricity.
SUBSTANCE: invention relates to electrical equipment and can be used for study of physical nature of so-called magnetic friction and its relation with a magnetic susceptibility of the ferromagnetic placed in the changing external magnetic field. The device for study of magnetic friction contains a magnetised rotating rotor and a motionless stator made from the ferromagnetic substance under study, a polarising coil, a high-frequency transformer, an adjustable DC power supply, an electromagnetic sensor of angular speed of rotor rotation with a counterbalance, a frequency measuring instrument, a control and data processing unit, a broadband low-noise amplifier and a spectrum analyser, a synchronous motor, frequency-regulated AC power supply, a device for measurement of the power consumed by the synchronous motor. The rotating rotor is designed as a symmetric structure with two identical cylindrical poles the gap of which with reference to the cylindrical stator at least by order of two is less than the radius of cylindrical poles of the rotor. Aforesaid elements are interconnected in such a way as pointed out in application materials.
EFFECT: ensuring of possibility of study of magnetic friction in ferromagnets, in particular correlation of magnetic friction and the value of the external magnetic field applied to a ferromagnet.
4 dwg
