SU898335A2

SU898335A2 - Autocompensating converter of pulse signals

Info

Publication number: SU898335A2
Application number: SU802907370A
Authority: SU
Inventors: Лев Аркадьевич Кориневский; Юрий Михайлович Сапига; Иван Макарович Онищенко
Original assignee: Предприятие П/Я В-8117
Priority date: 1980-04-09
Filing date: 1980-04-09
Publication date: 1982-01-15

Description

Изобретение относитс к измерению электрических переменных величин и предназначено дл использовани в им-, пульсных устройствах, в частности дл линейного преобразовани амплитуды импульсной последовательности в .пропорциональное посто нное напр жение.The invention relates to the measurement of electrical variables and is intended for use in pulse and pulse devices, in particular for linearly converting the amplitude of a pulse sequence to a proportional constant voltage.

По авт. св. № 629509 известен автокомпенсационный преобразователь (АКП) ,. содержащий один канал, в котором последовательно включены элемент сравнени , расширитель, управл емый частотный ограничитель (УЧО) и интегратор 1.By bus. St. No. 629509 is known autocompensation converter (AKP),. containing one channel in which the reference element, expander, controlled frequency limiter (UCF) and integrator 1 are sequentially included.

Недостатком этого устройства вл етс относительно большое врем восстановлени исходного состо ни и, как следствие, низка точность преобразовани при изменени х частоты импульсного сигнала.A disadvantage of this device is the relatively long recovery time of the original state and, as a result, low conversion accuracy with changes in the frequency of the pulse signal.

Цель изобретени - повышение точности преобразовани ..The purpose of the invention is to improve the accuracy of conversion.

Поставленна цель достигаетс тем, что в автокомпенсационный преобразователь импульсных сигналов, содержащий элемент сравнени / один вход которого соединен со входом устройства, другой - с выходом интегратора и выходом устройства, а выход - с входом, расширител , выход которого соединен с входом управл емого частотного ограничител , дополнительно введен функциональный преобразователь, причем его вход соединен с выходом управл емого частотного ограничител , а выход - с входом интегратора.The goal is achieved in that an autocompensation pulse converter containing a comparison element / one input of which is connected to the device input, another - to the integrator output and device output, and the output - to the input, an expander, the output of which is connected to the input of the controlled frequency limiter , a functional converter was additionally introduced, and its input is connected to the output of the controlled frequency limiter, and the output - to the input of the integrator.

На чертеже представлена блок-схема АКП.The drawing shows the block diagram of the AKP.

АКП содержит последовательно вклю10 ченные &лемент 1сравнени , расширитель 2, УЧО 3, функциональный преобразователь 4 и интегратор 5, причем выход интегратора 5 соединен с выходом устройства и одним входом эле15 мента 1 сравнени , другой вход которого соединен со входом устройства.The ACP contains successively included & 1 comparison element, expander 2, UCO 3, functional converter 4 and integrator 5, the output of integrator 5 connected to the output of the device and one input of comparison element 1, the other input of which is connected to the input of the device.

Управл емый частотный ограничитель 3 преобразует выходной сигнал расширител в импульснБй сигнал, амплиту20 да которого пр мо пропорциональна, а длительность обратно пропорциональна текущему значению частоты входного импульсного сигнала.Controlled frequency limiter 3 converts the expander output signal into a pulse signal, the amplitude 20 of which is directly proportional, and the duration is inversely proportional to the current frequency value of the input pulse signal.

Функциональный преобразователь 4 Function Converter 4

25 может быть выполнен, например, на базе дифференциального операционного усилител , в цепь обратной св зи которого , либо во входную цепь, включены диоды, обеспечивающие нужный 25 can be performed, for example, on the basis of a differential operational amplifier, in the feedback circuit of which, or in the input circuit, diodes are included that provide the necessary

Claims

30 is a type of conversion function, and a voltage divider at the amplifier input sets the threshold U "(jp of the functional converter operation. The automatic gearbox works as follows. When a pulse sequence, for example, positive polarity, is fed to the input, the output of the comparison element 1 amplitude-amplified pulses appear, which, after normalization over the duration of the expander 2, convert UCO 3 to signals with a duration and amplitude proportional to the frequency of the input pulse sequence. Since the amplitude There, these signals for any frequency of the input pulses are higher than the threshold voltage Unoo./ Installed in function converter 4, they pass unhindered to the input of integrator 5, as a result of which the output voltage of the latter starts to increase. At the time that the output voltage of the integrator exceeds 5 amplitude. The input pulse sequence comparison element 1 is turned off, the outputs of the expander 2 and the FCh 3 are set to a voltage close to zero. The functional converter 4 forms a voltage of another polarity, under the influence of which the integrating capacitance of the integrator 5 begins to forcefully discharge, and when the output voltage exceeds the amplitude of the input, output pulses of the comparison element 1 again appear pulses, amplitudes and the signal at the output of the AChO 3 exceeds the threshold level Uripp and the functional converter 4 switches over to the linear mode and transmits the signals of the CCF 3 to the integrator 5 input. As a result, the voltage at the output of the integrator 5 increases again and with the further process is repeated, i.e. a dynamic equilibrium mode is established. After switching on the input 1mp, the sequence of elements of the device changes as follows: at the output of element 1, spreader 2, UCO.3 the signals disappear. The functional converter 4 generates a voltage of another polarity, under the influence of which the output voltage of the integrator 5 is forcedly reduced, until it crosses (from top to bottom) the zero voltage level at the second input of the reference element 1, as a result of which a certain difference, amplified and normalized signal, under the action of which the functional converter 4 switches to the linear mode and transmits the signal to the integrator 5 signal of the CCF 3. The integrator 5 increases its voltage to coagulant intersection (bottom-up) of the zero level voltage on the second input element 1 and comparing all the processes are repeated, i.e., The ACP is in dynamic equilibrium mode, and its output voltage pulses around the zero level. After the input pulse sequence is turned off, the ACP forsignly restores the original state. Thus, this device, retaining all the positive qualities of the well-known: simplicity and confusion time for the conversion mode, significantly reduces the recovery time of the initial state of the automatic transmission and, therefore, improves the accuracy of the conversion with changes in the frequency of the input pulse signal. Formula of the invention Autocompensation converter of pulse signals according to the author. St. No. 629509, characterized in that, in order to increase the conversion accuracy, the output of the controlled frequency limiter is connected to the integrator input via an additionally introduced functional converter. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 629509, cl. G 01 R 19 / 22,05.04.76 (prototype).