SU789972A1

SU789972A1 - Device for plotting dynamic inductance characteristics

Info

Publication number: SU789972A1
Application number: SU782673593A
Authority: SU
Inventors: Рубэн Арамович Агаронянц
Original assignee: Всесоюзный заочный институт текстильной и легкой промышленности
Priority date: 1978-10-17
Filing date: 1978-10-17
Publication date: 1980-12-23

Description

Изобретение относится к электротехнике и позволяет экспериментально снимать характеристику динамической индун* тивносги электромагнитных элементов постоянного тока при срабатывании.The invention relates to electrical engineering and allows you to experimentally characterize the dynamic inductivity * of electromagnetic elements of direct current when triggered.

Известны устройства для снятия динамических (тяговых) характеристик электромагнита, содержащие датчик перемеще— ' ния якоря и вычислительную схему Γ1Ί нKnown devices for measuring the dynamic (traction) characteristics of an electromagnet, containing an armature displacement sensor and a computational circuit Γ1Ί н

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Известны также устройства для снятия динамических характеристик электромагнита, содержащие тензодатчик перемещения якоря и вычислительную схему .£3jAlso known are devices for measuring the dynamic characteristics of an electromagnet, containing an anchor displacement strain gauge and a computational circuit. £ 3j

Наиболее близким к предлагаемому _tявляется устройство для снятия динамических характеристик, содержащее датчик положения якоря, вычислительную · схему и электронно-лучевой осциллограф ' ί.⁴ί· ;Closest to the proposed _t is a device for measuring dynamic characteristics, containing a sensor for the position of the armature, a computing · circuit and an electron-beam oscilloscope '. ⁴ ί ·;

Цель изобретения — повышение точности и надежности.The purpose of the invention is improving accuracy and reliability.

Поставленная цель достигается тем, что датчик положения якоря выполнен .This goal is achieved by the fact that the sensor position of the armature is made.

на элементе Холла, предназначенном? для размещения на неподвижном сердечнике ι электромагнитного элемента постоянного тока, устройство содержит также усилитель с резистивным сопротивлением на входе и последовательно соединенным с ним источником питания, резистивным сопротивлением на выходе и включенным последовательно с ним дублирующим источником питания, а вычислительная схема выполнена в виде двух блоков целения, интегрирующей ₍ 1?С-цепочки и RC-цепочки на выходе цепи, образованной резистивным сопротивлением на выходе усилителя и дублирующим источником питания, при этом выход элемента Холла включен на вход блока деления, другой его вход включен на элемент С RC-цепочки, связанной с дублирующим источником питания, а выход через интегрирующую RC-цепь на вход электронно-лучевого осциллографа, другой блок деления одним входом подключен к элементу R RC—цепочки, связанной с дубли3 элемент постоянно— устройством, сос2, цепочки 3 из ресоединен с усилителя сопротивления и источника выходе усилителя, дифферен10 рующим источником питания, а другим к элементу С этой же цепочки, выход этого блока деления подключен на вход электронно-лучевого осциллографа. На фиг. 1 представлена блок-схема устройства; на фиг. 2 - принципиальная электрическая схема.on the Hall element intended? for placement on a fixed core ι of a direct current electromagnetic element, the device also contains an amplifier with a resistive resistance at the input and a power supply connected in series with it, a resistive resistance at the output and a backup power source connected in series with it, and the computational circuit is made in the form of two target blocks integrating _(1? P-chains and RC-chain output circuit formed by the resistive impedance of the output amplifier and backup power source when e ohm, the output of the Hall element is connected to the input of the division unit, its other input is connected to the element C of the RC circuit connected to the backup power source, and the output through the integrating RC circuit to the input of the cathode-ray oscilloscope, another division unit is connected to the R element by one input An RC circuit connected to a duplicate 3 element is permanently a device, co2, circuit 3 of which is connected to a resistance amplifier and an output source of the amplifier, a differentiating power source, and another to the element C of the same chain, the output of this division block is connected to the input d electron-beam oscilloscope. In FIG. 1 shows a block diagram of a device; in FIG. 2 is a circuit diagram.

Элекгрома гнитный го тока 1 тоящим из зистивного питания на пирующей цепи 4, блока 5 деления, электронно-лучевого осциллографа 6, датчика 7 положения якоря, блока деления, и интегрирующей цепочки 9; в электрическую схему включены добавочное резистивное сопротивление 10 в цепи обмотки возбуждения электромагнитного элемента, резистивное сопротивление 11 цепочки напряжения, емкость 12 дифференцирующей цепочки, характеризующая скорость изменения магнитного потокосцепления 4; резистивное сопротивление 13 дифференцирующей цепочки, характеризующее скорость изменения магнитного· потокосцепления' 4, сопротивление 14 ингенгрирующей цепочки 9, емкость 15 интегрирующей цепочки 9.Elektroma of the gnitic current 1, which is based on resistive power supply on the reeling circuit 4, the division unit 5, the cathode-ray oscilloscope 6, the armature position sensor 7, the division unit, and the integrating circuit 9; the electrical circuit includes an additional resistive resistance 10 in the excitation circuit of the electromagnetic element, resistive resistance 11 of the voltage chain, capacity 12 of the differentiating chain, characterizing the rate of change of the magnetic flux link 4; resistive resistance 13 of the differentiating chain, characterizing the rate of change of magnetic

Якорь электромагнитного элемента находится под воздействием силы противодействующей пружины, которая оттягивает якорь к верхнемуупору.The anchor of the electromagnetic element is under the influence of the force of the opposing spring, which pulls the anchor to the upper stop.

Обмотка возбуждения электромагнитного элемента соединена последовательно с источником питания и добавочным резистивным сопротивлением 10,которое соединено параллельно с входом усилителя. На выход усилителя 2 подключено резистивное сопротивление· 11 цепочки 3, которое соединено последовательно и встречно с дублирующим источником питания.The field winding of the electromagnetic element is connected in series with the power source and additional resistive resistance 10, which is connected in parallel with the input of the amplifier. The output of the amplifier 2 is connected to the resistive resistance · 11 of the chain 3, which is connected in series and counter to the backup power source.

Цепочка подключена на вход дифференцирующей цепочки, характизирующей ско- - рость изменения магнитного потокосцепления, выход вход блокаThe chain is connected to the input of the differentiating chain, characterizing the rate of change of the magnetic flux linkage, the output is the input of the block

Цепочка ко второму вому входуChain to the second input

Датчик положения якоря расположен на сердечнике и имеет измеритель Холла.An anchor position sensor is located on the core and has a Hall meter.

Нагрузочное сопротивление и источник питания в цепи нагрузки измерителя Холла соединены последовательно.The load resistance and power supply in the load circuit of the Hall meter are connected in series.

Нагрузочная цепь измерителя Холла подключена на второй вход блока 8 деления.The load circuit of the Hall meter is connected to the second input of the division unit 8.

которой подключен на первый деления.which is connected to the first division.

напряжения подключена к входу блока 5 деления и перцругого блока 8 деления.voltage is connected to the input of the division unit 5 and the percussive division unit 8.

В цепи управления измерителя Холла включено регулировочное сопротивление.The control circuit of the Hall meter includes an adjustment resistance.

Выход блока 8 деления· соединен с входом интегрирующей цепочки 9, а ее вход соединен с первым входом (ос в абсцисс) электронно-лучевого осциллографа 6 с запоминанием. 'The output of the division unit 8 is connected to the input of the integrating chain 9, and its input is connected to the first input (os to abscissa) of the cathode-ray oscilloscope 6 with memory. ''

Выход делителя 15 динамической индуктивности подключен к первому входу (ось ординат) электронно-лучевового осциллографа с запоминанием.The output of the dynamic inductance divider 15 is connected to the first input (ordinate axis) of the electron beam oscilloscope with memory.

Работа устройства происходит следующим образом.The operation of the device is as follows.

При включении коммутатора включается источник питания.When the switch is turned on, the power source is turned on.

Обмотка возбуждения электромагнитного элемента'создает магнитное потокосцепление, под действием которого якорь притягивается к нижнему упору.The field winding of the electromagnetic element creates a magnetic flux linkage, under the action of which the armature is attracted to the lower stop.

Работа устройства при этом происходит в динамическом режиме и списывается уравнениями динамики.The operation of the device in this case occurs in dynamic mode and is written off by the equations of dynamics.

Падение напряжения,, пропорциональное падению напряжения на сопротивлении обмотки возбуждения электромагнитного элемента 1 постоянного тока, подается на усилитель 2 напряжения, с выхода которого снимается напряжение, равное падению напряжения на омическом •сопротивлении электромагнитного элемента 1 постоянного тока, и подается на К^С—цепочку 3, на которую одновременно подается напряжение дублирующего источника питания.The voltage drop, proportional to the voltage drop across the resistance of the field winding of the electromagnetic element 1 of direct current, is supplied to the voltage amplifier 2, the output of which is removed from the voltage equal to the voltage drop across the ohmic resistance of the electromagnetic element 1 of direct current, and fed to the K ^ C-chain 3, to which the voltage of the backup power source is simultaneously applied.

Напряжение, снимаемое с выхода цепочки 3 напряжения, подается на первый вход блока 5 целения, первый вход другого блока 8 деления и вход дифференцирующей RC-цепочки, с выхода которой .снимается напряжение, пропорциональное скорости изменения тока во времени, и подается на второй вход блока деления.The voltage taken from the output of the voltage chain 3 is supplied to the first input of the target block 5, the first input of another block 8 of the division and the input of the differentiating RC chain, from the output of which the voltage proportional to the rate of change of current in time is removed and applied to the second input of the block divisions.

С выхода нагрузочной цепи измерителя Холла датчика 7 положения якоря снимается напряжение, пропорциональное магнитной индукции, и подается на первый вход блока 8 деления с выхода которого снимается напряжение, пропорциональное скорости якоря электромагнитного элемента 1 постоянного тока, и подается на вход интегрирующей цепочки 9.A voltage proportional to magnetic induction is removed from the output of the load circuit of the Hall meter of the sensor 7 of the armature, and a voltage proportional to the speed of the armature of the electromagnetic element 1 of the direct current is removed from the output of the division unit 8, and fed to the input of the integrating circuit 9.

С выхода интегрирующей цепочки 9 снимается напряжение, пропорциональное координате пути (перемещения) якоря, и подаетця на первый вход (ось абсцисс) электронно-лучевого осциллографа 6 с запоминанием, на второй вход которого (ось ординат) с выхода блока 5 деленияThe voltage proportional to the coordinate of the path (displacement) of the armature is removed from the output of the integrating chain 9 and is supplied to the first input (abscissa axis) of the cathode-ray oscilloscope 6 with memory, the second input of which (ordinate) from the output of division block 5

769972 подается напряжение, пропорциональное динамической индуктивности.769972 a voltage proportional to the dynamic inductance is applied.

Предлагаемое устройство позволяет снимать динамическую характеристику индуктивности точнее, надежнее и бее проведения сложных расчетов. Это позволяет использовать его при массовом и серийном производствах.The proposed device allows you to remove the dynamic characteristic of the inductance more accurately, more reliably and without complex calculations. This allows you to use it in mass and mass production.

Claims

The invention relates to electrical engineering and allows experimental determination of the dynamic HHayif characteristic of electromagnetic elements of direct current when triggered. There are known devices for removing the dynamic (traction) characteristics of an electromagnet, which contain a cor displacement sensor and a computational scheme fll Н Also known are devices for capturing the dynamic characteristics of an electromagnet, containing a cortex displacement transducer, and a computational circuit 3. Dynamic characteristics, containing a core sensor, a computational circuit, and an electron beam oscilloscope, 41.. The purpose of the invention is to increase accuracy and reliability. The goal is achieved by the fact that the core position sensor is made on a Hall element intended. The device also contains an amplifier, with a resistive impedance at the input and a power source connected in series with it, an impedance resistor at the output and a backup power source connected in series with it, and a computational one. the circuit is made in the form of two dividing units integrating 1 C-chain and RC-chain at the output of the circuit, formed by resistive resistance at the output of the amplifier and a backup power source, At the same time, the output of the Hall element is connected to the input of the dividing unit, the other Ago input is connected to the C element of the RC chain connected to the backup power source, and the output through the integrating RC circuit to the input of the electron beam oscilloscope, another division unit is connected to one input to the element R of the COP-chapka, connected to a duplicating power source, and aj: iyiniM to the element From the same chain, the output of this division unit is connected to the input of an electron-beam X-ray scanner. FIG. 1 is a block diagram of the device; in fig. 2 - circuit diagram in principle. A direct current electromagnetic element 1 is connected to a device consisting of amplifier 2, chain 3 of a resistive resistance and a power source at the output of the amplifier, a differentiating circuit 4, a dividing circuit 5, an electric oscilloscope oscilloscope 6, a sensor 7 of a patron, a block sharing and integrating chain 9; the electrical circuit includes an additional resistance of 1O in the circuit of the excitation winding of the electromagnetic element, the resistance of the voltage circuit 11, the capacitance 12 of the differentiating chain, which characterizes the rate of change of the magnetic flux linkage 4; Reconstructive support of the differentiating chain 13, characterizing the rate of change of magnetic flux coupling 4, resistance 14 of the intensifying chain 9, capacitance 15 of the integrating chain 9. The anchor of the electromagnetic element is under the influence of the force of the opposing spring, which pulls the bark towards the upper support. The excitation winding of the electromagnetic element is connected in series with the power source and an additional resistive resistance 10, which is connected in parallel with the input of the amplifier. A resistor 11 of the chain 3 is connected to the output of amplifier 2, which is connected in series and counter to the backup power source. The chain is connected to the input of a differential chain, which characterizes the rate of change of the magnetic flux linkage, the output of which is connected to the first input of the division unit 5. The voltage chain 3 is connected to the second input of dividing unit 5 and to the first unit of another dividing unit 8. The core position sensor is located on the core and has a Hall meter. The load resistance and the power sources in the Hole meter load circuit are connected in series. The load circuit of the Hall meter is connected to the second input of the block 8 cases. 24 The control resistance of the Hall meter is on. The output of dividing unit 8 is connected to the input of the integrating chain 9, and its input is connected to the first input (abscissa axis) of the electron-beam oscilloscope 6 with memory. The output of the divider 15 dynamic inductance is connected to the first input (axis of ordinates) of the electron-beam oscilloscope with memory. The operation of the device is as follows. When the switch is turned on, the power supply is turned on. The excitation winding of the electromagnetic element creates a magnetic flux coupling, under the action of which the bark is attracted to the lower stop. The operation of the device in this case occurs in a dynamic mode and is written off by the equations of dynamics. The voltage drop, proportional to the voltage drop on the resistance of the excitation winding of the direct current electromagnetic element 1, is applied to the amplifier 2. The voltage from which the voltage is removed is equal to the voltage drop on the ohmic resistance of the electromagnetic element 1 of the direct current, and is supplied to the f-chain 3, to which the voltage of the backup power source is simultaneously applied. Voltage: The voltage taken from the output of the voltage chain 3 is fed to the first input of the 5 division unit, the first input of the other 8 division block and the input of the differentiating RC chain, from the output of which the voltage proportional to the rate of current change over time, and is fed to the second input of the division unit. A voltage proportional to magnetic induction is removed from the output circuit of the Hall meter measuring sensor 7 for the core, and supplied to the first input of dividing unit 8 from which the voltage is removed proportional to the speed of the core of the direct current electromagnetic element 1 chain 9. The output of the integrating chain .9 is removed, the voltage proportional to the coordinate of the path (displacement) of the core, and goes to the first input (abscissa axis) of the electron-beam oscilloscope 6 with memory, to the second the input of which (y-axis) from the output of dividing unit 5 is supplied with a voltage proportional to the dynamic inductance. The proposed device allows one to capture the dynamic characteristic of the inductance more accurately, more reliably and without complex calculations. This allows it to be used in mass and mass production. Claim 1. A device for sensing the dynamic inductance characteristics of an electromagnetic constant-current element when triggered, comprising a core position sensor, a computational circuit and an electron-beam oscilloscope, in order to improve the accuracy and reliability of the core position sensor on the elec Hall, designed to be placed on a fixed core, contains an amplifier with a resistive impedance at the input and a power supply connected in series with it, resistive an output resistance and a redundant power source connected in series with it, and the computational circuit is made in the form of two division blocks integrating 26 RC chains and l C-chains at the output of the circuit formed by resistive resistance at the output of the amplifier and a duplicate power source; the Hall element is connected to the input of the dividing unit, its other input is connected to the C element of the RC circuit connected to the backup power source, and the output via the integrating 1 C-circuit to the X input of the electron-beam oscilloscope. A separate division unit with one input is connected to an R-element of the RC chain connected to a backup power source, and another to an element of the same chain, the output of this division unit is connected to the input j of an electron-beam oscilloscope. Sources of information taken into account during the examination 1. USSR author's certificate number 325597, cl. Q O5 B 23/02, 1970.

2. USSR author's certificate number 595707, cl. q O5 B 23/02, 1976.

3. Bocharov V. Ye. Determination of the dynamic characteristics of a direct current contactor. M., Electrosila, 1970,

4. The copyright certificate of the USSR 164362, cl. H 01 H 47/00, 1963.

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