SU951211A1

SU951211A1 - Device for measuring dynamic reversible permeability

Info

Publication number: SU951211A1
Application number: SU802942620A
Authority: SU
Inventors: Борис Борисович Винокуров; Олег Георгиевич Ширинян
Original assignee: Томский политехнический институт
Priority date: 1980-06-23
Filing date: 1980-06-23
Publication date: 1982-08-15

Description

(54) УСТГОЙСТВО ДЛЯ ИЗМЕРЕНИЯ ДИНАМИЧЕСКОЙ ОБРАТИМОЙ(54) CONSTITUTION FOR MEASURING DYNAMIC REVERSIBLE

ПРОНИЦАЕМОСТИPermeability

Изобретение относитс к магнитным измерени м и может быть использовано дл определени магнитных характеристик ферромагнетиков , а также дл неразрушающих испытаний ферромагнитных материалов и изделий .The invention relates to magnetic measurements and can be used to determine the magnetic characteristics of ferromagnets, as well as for non-destructive testing of ferromagnetic materials and products.

Известно устройство дл определе1™ динамической обратимой проницаемости, содержащее мостовую цепь переменного тока, в одно плечо которой включена катушка с испытуемым ферромагнитным сердечником, генератор низкой и высокой частоты, а также селективный усилитель 1.A device is known for determining the dynamic reversible permeability ™ containing an alternating current bridge circuit in one arm of which includes a coil with a ferromagnetic core under test, a low and high frequency generator, and a selective amplifier 1.

Однако известное устройство обладает низкой производительностью, св занной со спецификой использовани мостовых цепей на переменном токе.However, the known device has a low productivity associated with the specific use of bridge circuits with alternating current.

Наиболее близким к изобретению по своей технической сущности вл етс устройство, с6держащее преобразователь, две намагничивающие обмотки которого подключены соответственно к генераторам высокой и низкой частоты, измерительную обмотку, подключенную ко входу усилител высокой частоты.The closest to the invention in its technical essence is a device containing a converter, two magnetizing windings of which are connected respectively to high and low frequency generators, a measuring winding connected to the input of a high frequency amplifier.

блок выделени огибающей, к выходу которого подключен индикатор, и блок формировани опорного напр жени , своим входом индикатор св зан с генератором низкой частоты 2.an envelope extracting unit, to the output of which an indicator is connected, and a reference voltage generating unit, the indicator is connected to the low-frequency generator 2 by its input.

Однако это устройство не обладает высокой точностью.However, this device does not have high accuracy.

Цель изобретени - повышение точности измерений.The purpose of the invention is to improve the measurement accuracy.

Поставленна цель достигаетс тем, что The goal is achieved by the fact that

Claims

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U ,, ,,,,,,, ,,,. ,,,, „„.,. ,,, ,,,, - ,, „, c, ,,, ,,, -„, -.-:, ,., -, -. ,, -t with ,;) -J ,,,,,, -, - iiiip;: ----.- cbF-- ",. ,, .. ,, ,,., ,. ,,. j ,,,,,, p, prvT.-o - ,. .- ,,, -) h: -; | --L | „, -. ,,, -.- ,, - ,, ,,., - P g ,,, -. ,,, 0, - .., / ,, - g ,,, -.-.: .- .- ,; g ,, ,, „,„.,; ,,,,,, - ,,,,, p, „,,,„ ,,,, d ,,,, ,,,,,,,,,,,,, --1 ,,,., P ,, „,,,,; ,, „-, .-,;, ,, ,,,“. |., -,. | .- |, (,, ,, “,: .---:;, r ,, .. fv trs. Education :;; un sposoostausg; 0, ;; o;: 07-noMf-vViv-iic nsiipir v ,,, v, rnpchf Irch G; si: about iwrTvrrrc iion ;. From i TVTcn orn TBKjiv о Prpr30 vr signal with ius; ; kzb11ragsl; 1:; gc ussts (GI:: chAngs,; pr - 1: /: g. ztor; harmonopt with, -cho-or pss-psys - to the input of the selection; I 5g-g by | JI W. (i.e. jTii.TiC); - vT; i d-tector 14 выдел allocation beacon of the envelope 9 realizes the semi-harmonic envelope of the harmonic, which turns on the ij iHaNfH4ecKOH reversible permeability curve, then the selected ngc is accessed by means of the iHaNfH4ecKOH reversible permeability; HiUjiKaTOpa can be used either by jneKTP.QiiHbiK o A slit graph, on which you can observe both the time dependence of the diacronic reversible permeability, and all that depend on the intensity of the low-frequency tulle, or a controlled amplitude voltmeter, with which you can measure: instantaneous values (reversible permeability. And in another case The second input of the indicator is applied to an elastic voltage of a 1shz frequency, from a low 4 frequency generator to a 4th voltage generator 11) south voltage 11. {The use of the proposed device allows 1 Measurements with docecal m;) about a wide range of variable and demanding fields, Claims of the Invention A device for measuring dynamic reversible permeability, containing two small windings connected to the outputs of low-generator 11; A high-frequency amplifier connected to the output, an envelope of an amplitude envelope and an indicator sequentially connected, and a second die through a driver, n; And | zhez is associated with a second output (low frequency; 10p; I distinguish S f- THEM, THAT, WITH HIGH LEVEL THERE IS A HIGHER accuracy of precision measurement. it is equipped with a sequence; lht h) with a single phase regulator, detector and selective amplifiers; The hot phase controller input connects to the second generator OUT high i-CTOTb, the output of the selective amplifier is connected to the input of the envelope dividing unit, and the second input of the synchro detector with high frequency amplification. YSTOCHSHZHI INFORMATION, 30 taken into account during the examination of i Lime of Tomsk Polytechnic Institute, t. 208, -1974, p. 37-40.

2. Measuring equipment, 1971, No. 2, p. 59-60.