SU817735A2

SU817735A2 - Special-shape voltage generator

Info

Publication number: SU817735A2
Application number: SU792778159A
Authority: SU
Inventors: Евгений Васильевич Савченко; Борис Николаевич Вишняков
Original assignee: Предприятие П/Я Г-4805
Priority date: 1979-06-08
Filing date: 1979-06-08
Publication date: 1981-03-30

Description

II

Изобретение относитс к вычислительным устройствшй и может быть использовано во врем -импульсных преобразовател х дискретно-аналогового типа.The invention relates to computing devices and can be used during discrete-analog type time-pulse converters.

По основному авт. св. 398963 известен генератор, содержащий многофазный мультйвибратод, ключи, задах цие потенциометры, запоминающее устройство нулевого пор дка,интегратор . Кусочно-линейный выходной сигнал генератора формируетс суммированием треугольных импульсов интегратора при поступлении на вход последнего ступенчатого напр жени через последовательно открывающиес ключи с задающих потенциометров According to the main author. St. 398963 a generator is known that contains a multi-phase multi-vibrathode, keys, potentiometers, a zero-order memory, an integrator. The piecewise linear output signal of the generator is formed by summing the triangle pulses of the integrator when the last step voltage arrives at the input through successively opening keys from the setting potentiometers.

Недостаток известного генерйторанизка точность воспроизведени кусочно-линейной функции при наличии в ней перепадов напр жени с малой длительностью фронта, обусловленна тем, что указанные перепады напр жени после преобразовани интегратором имеют длительность фронта, равную посто нной времени интегратора , котора определ етс интервалом разбиени генерируемой функцли. Следовательно , дл воспроизведени известным генератором кусочнй-линейной функции при наличии в ней перепадов напр жени с малой длительностью фронта необходимо уменьшать интервал разбиени , что приводит к резкому увеличению количества задающих потенциометров , ключей и чеек многофазного мультивибратора.The disadvantage of the known generator low reproduction accuracy of a piecewise linear function in the presence of voltage drops with a short front duration, due to the fact that these voltage drops after converting by the integrator have a front duration equal to the integrator constant time interval, which is determined by the split interval of the generated function. Therefore, to reproduce a piecewise linear function known by the generator, if there are voltage drops with a small front duration in it, it is necessary to reduce the split interval, which leads to a sharp increase in the number of setpoint potentiometers, keys and cells of a multiphase multivibrator.

Цель изобретени - повыиение точ0 ности воспроизведени кусочно-линейной функции при наличии в ней перепадов напр жени .с малой длительностью фронта.The purpose of the invention is to improve the accuracy of reproduction of a piecewise linear function in the presence of a voltage drop with a short front duration.

Дл достижени этой цели в генератор напр жени специальной фор№л введены дополнительный ключ, формирователь импульсов и коммутатор, причем между входом и выходом интеграторг включен дополнительный ключ,To achieve this goal, an additional key, a pulse shaper, and a switch are introduced into the voltage generator of a special formula, and an additional key is inserted between the input and output of the integrator,

управл юьдай вход которого соединен через коммутатор с выходами многоФазного мультивибратора, вход которого через формирователь импульсов подключен к выходу интегратора. Control the input of which is connected through a switch with the outputs of a multi-phase multivibrator, the input of which is connected to the integrator's output through a pulse shaper.

SS

На фиг. 1 изображена схема предлагаемого генератора; на фиГ. 2 процесс формировани выходного напр жени .FIG. 1 shows a diagram of the proposed generator; on fig 2 process of forming the output voltage.

Claims

The generator contains a multiphase multivibrator 1, periodically performing control of keys 2, through which the setpoint potentiometers 3 are connected to the input of the integrator 4, and the voltage from the zero-order device 5 is input to the input of the latter, the input of which is connected to the integrator 4 through 6, using switch 7, any output of a multi-phase multivibrator 1 can be connected to the control input of an additional key 8, from the output of the integrator 4, the voltage is applied to the driver of 9 pulses by a differential voltage with a short front duration, which, in the presence of voltage drops with a short front duration, generates a pulse arriving at the control input of the key 6 and the input of the multiphase multivibrator 1. The generator operates as follows. From the arrival of the synchronization pulse, the key 6 closes for a short time one of the cells of the multivibrator 1, ensuring the closure of the corresponding key 2, is excited. This process is repeated periodically. Thus, through successively opening keys 2, rectangular impulses come to the integrator input, and the impulse values of the pulses are controlled by potentiometers 3 and correspond to the ordinates of the fitting function, and the duration of the pulses is equal to the interval of splitting the argument of the generated function. The constant time of the integrator 4 is chosen in such a way that its response to a single rectangular impulse when the negative feedback is looped through the key 6 and memorized, the zero order device 5 has the form of a triangle with a duration proportional to the input signal and a duration equal to two the function is formed by summing the triangle impulses of the integrator. The formation of a piecewise linear function containing a voltage drop with a short duration of the front occurs as follows. Using switch 7, the required cell of multivibrator 1 is connected to the control input of key 8. Excitement, the aforementioned cell closes key 8, which converts integrator 4 into an adder, triggered by voltage shaper 9 with a short front duration. The impulse of the imaging unit 9 briefly closes the key 6 and excites the next cell of the multivibrator 1, thus the key 8 is disconnected. , introducing into the proposed device a key 8, the closure of which converts the integrator 4 into an adder, allows to obtain both positive and negative erepady low voltage rise time in any set with the KO1 vlutatora 7 times. Claims of the invention The special voltage generator voltage according to the author. St. No. 398953, characterized in that, in order to improve the accuracy of reproduction of a piecewise linear function in the presence of voltage drops with a small front duration, an additional key, a pulse shaper and a switch are introduced into it, and an additional key is inserted between the integrator input and output, Controls whose input is connected via a switch to the outputs of a multi-phase multivibrator, whose input is connected to the integrator's output through a pulse shaper. Sources of information taken into account in the examination 1. USSR author's certificate 398963, CL. G 06 G 7/26, 1972. (prototype).

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