Korol V.I.1, Lankin M.V.2, Lankin A.M.3, Rudik E.A.4, Zdvizhkov F.V.5

1-5 Platov South-Russian State Polytechnic University (NPI) (Novocherkassk, Russia)

1corolvalera@yandex.ru, 2delete60@rambler.ru, 3lankinjohn@yandex.ru, 4mindcrysis_rd@mail.ru, 5felix.zdvizhkov@yandex.ru

Formulation of the problem. Quality control of high-coercivity permanent magnets (PM) implies the procedure of pulsed magnetization in single-turn inductors, followed by moving the PM into a measuring device, which is a demagnetizing electromagnet and measuring transducers of induction and magnetic field strength. Measuring channels of magnetic induction in existing production control systems are built using inductive magnetic flux sensors, which introduces an additional error in measurements.

Purpose of the article. Creation of a new method for determining the demagnetization curve B(H) based on a mathematical model that includes models of a magnet, an inductor, as well as data on current pulses flowing in an inductor and voltage applied to it.

Results. It has been established those different magnetic materials have different effects on the shape of the magnetizing pulse, which makes it possible to implement a new method and avoid the accumulation of errors that arose due to the application of the integration operation in inductive sensors.

Practical significance. The new method can be used to more accurately determine the magnetic characteristics of high-coercivity magnetic materials.

Korol V.I., Lankin M.V., Lankin A.M., Rudik E.A., Zdvizhkov F.V. Method for measuring the demagnetization curve B(H) of high-coercivity magnetic materials. Information-measuring and Control Systems. 2024. V. 22. № 6. P. 5−12. DOI: https://doi.org /10.18127/j20700814-202406-01 (in Russian)

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