SU951144A1

SU951144A1 - Method of adjusting computing channel oscilloscopic galvanometer

Info

Publication number: SU951144A1
Application number: SU802984149A
Authority: SU
Inventors: Тамара Яковлевна Шрайфельд; Сергей Ефимович Разин; Борис Нойхович Фроймович
Original assignee: Производственное Объединение "Виброприбор"
Priority date: 1980-09-25
Filing date: 1980-09-25
Publication date: 1982-08-15

Description

Изобретение относится к приборостроению и может быть использовано в светолучевой осциллографии для настройки вычислительного канала светолучевого осциллографа, содержащего осциллографический гальванометр (ОГ) и гальванометрический функциональный преобразователь (ГФП). ₁₀ The invention relates to instrumentation and can be used in light-beam oscillography for tuning the computing channel of a light-beam oscilloscope containing an oscillographic galvanometer (OG) and a galvanometric functional converter (HFP). ₁₀

Известен способ определения степени успокоения ОГ, заключающийся в том, что на рамку ОГ подают серию прямоугольных импульсов и определяют степень успокоения по отношению амплитуд переброса и установившегося значения β = , где β - степень успокоения, а и b - соответственно амплитуды переброса и установившегося значения [1] .There is a method for determining the degree of exhaust gas soothing, consisting in the fact that a series of rectangular pulses are fed to the exhaust gas frame and the degree of tranquility is determined by the ratio of the amplitudes of the transfer and the steady-state value β =, where β is the degree of calm, and b and respectively the amplitude of the transfer and the steady-state value [ 1] .

Поскольку в вичислительном канале светолучевого осциллографа, ОГ подключен к выходным клеммам ГФП, а отклик последнего на переменный электрический сигнал описывается урав- 25 нением второго порядка, указанный способ непосредственно не применим |дпя настройки вычислительного канала. Раздельная же настройка ГФП и ОГ по известному способу требует отключе- 30 ния ОГ от выходных клемм ГФП перед проведением каждого эксперимента. Кроме того, в случае, если ГФП установлен в неосвещаемой·части магнитного блока светолучевого осциллографа, настройка ГФП по известному способу неосуществима. Все это повышает трудоемкость и снижает точность настройки вычислительного канала.Since the exhaust channel in the numerical channel of the light-beam oscilloscope is connected to the output terminals of the HFP, and the latter's response to an alternating electric signal is described by a second-order equation, this method is not directly applicable for tuning the computational channel. Separate adjustment of the HFP and the exhaust gas according to the known method requires disconnecting the exhaust gas from the output terminals of the HFP before each experiment. In addition, in the event that the HFP is installed in the unlit · part of the magnetic unit of the light-beam oscilloscope, the adjustment of the HFP by the known method is not feasible. All this increases the complexity and reduces the accuracy of the tuning of the computing channel.

Цель изобретения - повышение точности настройки и снижение трудоемкости.The purpose of the invention is to increase tuning accuracy and reduce the complexity.

Для достижения цели в известном способе настройки осциллографического гальванометра вычислительного канала, включающем определение степени успокоения по отношению амплитуд переброса и установившегося значения при подаче серии прямоугольных импульсов, сначала подают серию, прямоугольных импульсов на первый вход ГФП вычислительного канала, поворачивают подвижную часть ГФП до получения градуировочного отклонения светового пятна и устанавливают оптимальную степень успокоения ОГ по отношению амплитуд переброса и установившегося значения, затем поворачивают подвижную часть ГФП до получения нулевого отклонения светового пятна, соединяют первый и второй входы ГФПпоследовательно, подают серию прямоугольных импульсов на второй вход ГФП, и устанавливают оптимальную степень успокоения ГФП по отношению амплитуд переброса и установившегося значения.To achieve the goal in the known method of setting up the oscillographic galvanometer of the computational channel, which includes determining the degree of calm by the ratio of the transfer amplitudes and the steady-state value when applying a series of rectangular pulses, first a series of rectangular pulses is fed to the first input of the HFP of the computing channel, the moving part of the HFP is rotated until a calibration deviation is obtained light spot and establish the optimal degree of calming the exhaust gas in relation to the amplitude of the transfer and steady-state values, then rotate the moving part of the HFP to obtain a zero deflection of the light spot, connect the first and second inputs of the HFP sequentially, apply a series of rectangular pulses to the second input of the HFP, and establish the optimal degree of soothing of the HFP in relation to the amplitudes of the transfer and the steady-state value.

На чертеже изображена схема для настройки вычислительного канала светолучевого осциллографа.The drawing shows a diagram for tuning the computing channel of a light-beam oscilloscope.

Схема состоит из генератора 1 прямоугольных импульсов, переключателя 2, штепсельного разъема 3 с контактами 3.1-3.8, рамки 4, датчи-. ка 5 ЭДС Холла,осциллографического гальванометра (ОГ) 6, осветителя 7, шкалы 8, потенциометра 9, выключателя 10, потенциометра 11.The circuit consists of a rectangular pulse generator 1, a switch 2, a plug 3 with contacts 3.1-3.8, a frame 4, sensors. 5 emf of the Hall, oscillographic galvanometer (ОГ) 6, illuminator 7, scale 8, potentiometer 9, switch 10, potentiometer 11.

Способ осуществляют следующим образом.The method is as follows.

От генератора 1 прямоугольных импульсов импульсы с помощью переключателя 2 подают на первый вход (контакты 3.3, 3.7) штепсельного разъема 3 ГФП, подвижная часть которого состоит из рамки 4 и жестко скрепленного с ней датчика 5 ЭДС Холла. Известно, что ЭДС Холла на выходе ГФП (контакты 3.2,3.6 штепсельного разъема 3), которая регистрируется с помощью ОГ 6, пропорциональна величине сигнала, подаваемого на первый вход, и углу поворота подвижной части. С помощью корректора электрического нуля (на чертеже не показан) поворачивают подвижную часть ГФП до получения градуировочного отклонения светового пятна, полученного при отражении подающего ’от осветителя 7.светового луча, на шкале 8. С помощью потенциометра 9 устанавливают оптимальную для данного. соотношения частот ГФП и ОГ степень успокоения по отношению амплитуд переброса и установившегося значения. Затем поворачивают подвижную часть ГФП до получения нулевого отклонения светового пятна, т.е. устанавливают электрический нуль ГФП. Выключателем 10 и переключателем 2 подают сигнал от генератора 1 на последовательно соединенные первый и второй входы ГФП. С помощью потенциометра 11 устанавливают степень успокоения ГФП, обеспечивающую наилучшие динамические характеристики ОГ. О величине степени успокоения судят по отношению амплитуд переброса и установившегося значения. _г From the generator 1 of rectangular pulses, the pulses using the switch 2 are fed to the first input (contacts 3.3, 3.7) of the HFP connector 3, the movable part of which consists of a frame 4 and a Hall EMF sensor 5 rigidly attached to it. It is known that the EMF of the Hall at the output of the HFP (contacts 3.2,3.6 of the plug connector 3), which is recorded using the exhaust gas 6, is proportional to the magnitude of the signal supplied to the first input and the angle of rotation of the moving part. Using the electric zero corrector (not shown in the drawing), the movable part of the HFP is rotated until a calibration deviation of the light spot obtained by reflecting the light feed from the illuminator 7. is obtained on a scale 8. Using the potentiometer 9, the optimal one for this is set. the ratio of the frequencies of the HFP and the exhaust gas the degree of tranquility in relation to the amplitude of the transfer and the steady-state value. Then the movable part of the HFP is rotated until a zero deflection of the light spot is obtained, i.e. set the electrical zero of the HFP. The switch 10 and switch 2 provide a signal from the generator 1 to the series-connected first and second inputs of the HFP. Using a potentiometer 11 establish the degree of soothing of the HFP, providing the best dynamic characteristics of the exhaust gas. The magnitude of the degree of calm is judged by the ratio of the amplitudes of the transfer and the steady-state value. _g

Описываемый способ позволяет по отклонению светового пятна ОГ установить оптимальные степени успокоения канала независимо от того, обладает ли оптическим выходом ГФП. Одновременно с процессом настройки осуществляется вывод электрического нуля ГФП. Способ значительно ускоряет процесс настройки канала, т.е. отпадает необходимость отключения ОГ и раздельной установки степени успокоения ГФП и ОГ, точность настройки при этом возрастает, что улучшает метрологические характеристики результатов регистрации и обработки электрических сигналов.The described method allows the deflection of the light spot of the exhaust gas to establish the optimal degree of calm of the channel, regardless of whether it has an optical output of the HFP. Simultaneously with the tuning process, the electrical zero of the HFP is output. The method significantly speeds up the process of tuning the channel, i.e. there is no need to turn off the exhaust gas and separately set the degree of soothing of the HFP and the exhaust gas, while the tuning accuracy increases, which improves the metrological characteristics of the results of registration and processing of electrical signals.

Claims

The invention relates to instrument engineering and can be used in a light-beam oscillography of an LP of a computation channel of a light-radiation oscilloscope containing an oscillographic galvanometer (OG) and a galvanometric functional converter (HFP). A known method for determining the degree of exhaust gas calming is that a series of square impulses is applied to the frame of the exhaust gas and the steadiness of the calm is determined by the ratio of the transfer amplitudes and the steady-state value pc / where p is the degree of calm and a and b are respectively the transfer amplitudes and steady state value 1. Since in the primary channel of the light-beam oscilloscope, the OG is connected to the output terminals of the HFP and the latter responds to a variable electric signal described by the second order equation, this method is not directly applicable | to tune the computational channel Separately adjust the HFP and OG by a known method requires it to be disabled from the output terminals of the HFP before each experiment. . In addition, in the event that the HFP is installed in the unlit part of the magnetic block of the light-beam oscilloscope, the adjustment of the HFP by a known method is not feasible. All this increases the complexity and reduces the accuracy of the computation channel. The purpose of the invention is to improve the tuning accuracy and reduce labor intensity. In order to achieve the goal, in a well-known method of tuning an oscillographic galvanometer of a computational channel, including determining the degree of calm with respect to the transfer amplitudes and a steady-state value, when applying a series of rectangular pulses, a series of rectangular pulses is first fed to the first HFP input of the computation channel, before the calibration deflection of the light spot and establish the optimum degree of calm of exhaust gas relative to the amplitudes of the flip and steady state then rotate the moving part of the HFP to obtain a zero deflection of the light spot, connect the first and second inputs of the HFP. sequentially,. a series of rectangular pulses is fed to the second input of the HFP, and an optimum degree of calm of the HFP is calculated with respect to the amplitudes of the edge and / value that has become. The drawing shows a diagram for setting up a computational channel of a light beam oscilloscope. The circuit consists of a heterator 1 rectangular impulses, a switch 2, a plug connector 3 with contacts 3.1-3.8, a frame 4, a sensor, 5 Hall voltage, an oscillographic galvanometer (OG) 6, an illuminator 1, a scale 8, a potentiometer 9, a switch 10 potentiometer 11. The method is carried out as follows. From the generator 1 of rectangular pulses, pulses 2 are fed to the first input (pins 3.3, 3.7) of the HFP plug connector 3, the movable part of which consists of a frame 4 and a Hall EMF sensor rigidly connected to it. It is known that the EMF of the Hall at the output of the HFP (contacts 3.2,3.6 of the plug connector 3), which is registered with the help of exhaust gas 6, is proportional to the size of the signal fed to the first input and the angle of rotation. moving part. Using the electric zero corrector (not shown in the drawing), the moving part of the HFP is rotated to obtain a calibration deflection of the light spot, obtained by reflecting the light beam from the illuminator 7. light beam, on a scale 8. With the help of potentiometer 9, the optimum ratio of this HFP and OG frequencies are a measure of calm with respect to the amplitudes of the flip and the established value. Then, the moving part of the HFP is rotated until a zero light spot is obtained, i.e. establish an electric zero HFP. The switch 10 and the switch 2 signal from the generator 1 to the serially connected first and second inputs of the HFP. With the help of potentiometer 11, the degree of calming down of the HFP is established, which provides the best dynamic characteristics of exhaust gas. The magnitude of the degree of tranquility is judged by the ratio of jumps and set values. The described method allows to determine the optimal degree of channel quenching by the deviation of the light emission spot of the channel, regardless of whether it has an optical output. Simultaneously with the tuning process, the output of an electrical zero of HFP is carried out. The method significantly speeds up the channel setup process, i.e. there is no need to turn off the exhaust gas and separate installation of the degree of calm of the HFP and the exhaust gas, the accuracy of the setting increases, which improves the metrological characteristics of the results of recording and processing electrical signals. The method of tuning the oscillographic galvanometer of the computing channel, including determining the degree of calm based on the transfer amplitudes and the steady-state value when applying a series of square pulses, characterized in that, in order to improve the tuning accuracy and reduce the labor intensity, a series of right-angled pulses is first applied the first input of the galvayometric functional converter of the computational, lny channel, rotates the movable part of the galvanometric functionally the transducer to obtain the calibration deflection of the light spot and establish the optimal degree of calm of the oscillographic galvanometer with respect to the amplitudes of the flip and the set value, then turn the moving part of the galvanometric functional converter to obtain a zero deflection of the spot, connect the first and second galvanometric functions of the galvanometer; serves a series of rectangular pulses to the second input of galvanometric of the HanoiHoro preobrazovatel function and set the optimum degree of calm of the galvanometric functional converter with respect to the amplitudes of the flip and the set value. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 618686, C. 01 R 3/00, 11.06.74.