Безконтактне розбракування матеріалу металевих пластин однієї марки сталі за їх електромагнітними параметрами
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Дата
2020
ORCID
DOI
doi.org/10.33955/2307-2180(6)2020.3-8
Науковий ступінь
Рівень дисертації
Шифр та назва спеціальності
Рада захисту
Установа захисту
Науковий керівник
Члени комітету
Видавець
ВКФ "Фавор ЛТД"
Анотація
Розроблено метод і пристрій на основі диференціального трансформаторного електромагнітного перетворювача для розбраковування матеріалу плоских мет алевих виробів. Показано, що використання диференціального методу для визначення магнітної проникності і електропровідності плоских металевих виробів дозволяє, разом з підвищенням роздільної здатності істотно спростити процедури проведення як вимірювальних, так і розрахункових операцій. Показано, що зі зростанням числових значень електромагнітних параметрів виробу чисельні значення похибок їх визначення збільшуються.
ln the work we have developed the method and the device on the basis of the differential transformer electromagnetic transducer for selecting flat metal products of the some steel grade on electromagnetic parameters. lt is shown that the use of the differential method for the simultaneous noncontact determination of the relative magnetic permeability and specific electrical conductivity of flat metal products allows, under certain conditions, togethet with increasing the resolution (accuracy) to significantly simplify both measurement and calculation operations. The obtained equations allow us to determine the value of the of electromagnetic parameters increment of the object under test using measured values of the amplitude and phase of the transformer transducer output signal, taking into account the selected mode of operation. We have developed the electric schematic diagram for connecting the transformer electromognitic transducer whiih implements differential method of the simultaneous noncontact monitoring of the increment of relative magnetic permeability and specific electrical conductivity of flat ferromagnetic plates. We have obtained experimental results, which show that the simultaneous determination of relative magnetic permeobility and specific electrical conductivity by the developed method is possible even if the electromagnetic parameters of the investigated ond standard samples do not differ much, i.e. when increments of their values are small. It is shown that the increase of numerical values of the investigated product electromognetic parameters cause the increase of their determination errors. This is primarily due to the fact that there is a significant difference between the linear sections of the universal functions, which lie in the basis of the differential method, and the real sections of these curves in the vicinity of the selected operoting point. Each workinq area of the universal transformation functions in the vicinity of the selected operating point corresponds to a certoin volue of the specified maximum error. For examole, in order to ensure a nonlineority error of less than 1%, it is necessary to have a working area that does not exceed 0.5%. Thus, the developed differential transformer transducer allows to obtain a small error in determining the two electromagnetic parameters of ferromagnetic mateilals. Therefore, we can use it to select sheet metal of the same steel orade manufactured in different factories.
ln the work we have developed the method and the device on the basis of the differential transformer electromagnetic transducer for selecting flat metal products of the some steel grade on electromagnetic parameters. lt is shown that the use of the differential method for the simultaneous noncontact determination of the relative magnetic permeability and specific electrical conductivity of flat metal products allows, under certain conditions, togethet with increasing the resolution (accuracy) to significantly simplify both measurement and calculation operations. The obtained equations allow us to determine the value of the of electromagnetic parameters increment of the object under test using measured values of the amplitude and phase of the transformer transducer output signal, taking into account the selected mode of operation. We have developed the electric schematic diagram for connecting the transformer electromognitic transducer whiih implements differential method of the simultaneous noncontact monitoring of the increment of relative magnetic permeability and specific electrical conductivity of flat ferromagnetic plates. We have obtained experimental results, which show that the simultaneous determination of relative magnetic permeobility and specific electrical conductivity by the developed method is possible even if the electromagnetic parameters of the investigated ond standard samples do not differ much, i.e. when increments of their values are small. It is shown that the increase of numerical values of the investigated product electromognetic parameters cause the increase of their determination errors. This is primarily due to the fact that there is a significant difference between the linear sections of the universal functions, which lie in the basis of the differential method, and the real sections of these curves in the vicinity of the selected operoting point. Each workinq area of the universal transformation functions in the vicinity of the selected operating point corresponds to a certoin volue of the specified maximum error. For examole, in order to ensure a nonlineority error of less than 1%, it is necessary to have a working area that does not exceed 0.5%. Thus, the developed differential transformer transducer allows to obtain a small error in determining the two electromagnetic parameters of ferromagnetic mateilals. Therefore, we can use it to select sheet metal of the same steel orade manufactured in different factories.
Опис
Ключові слова
електромагнітний перетворювач, диференціальний метод, магнітна проникність, електропровідність, electromognetic transducer, differential method, magnetic perneobility, electrical conductivity, nonlinearity error, sensitivity
Бібліографічний опис
Безконтактне розбракування матеріалу металевих пластин однієї марки сталі за їх електромагнітними параметрами / Б. М. Горкунов [та ін.] // Метрологія та прилади = Metrology and instruments. – 2020. – № 6 (86). – С. 3-8.