SU1456972A1

SU1456972A1 - Multiplying device

Info

Publication number: SU1456972A1
Application number: SU874236260A
Authority: SU
Inventors: Михаил Иванович Ломовцев
Original assignee: Новосибирский электротехнический институт
Priority date: 1987-04-27
Filing date: 1987-04-27
Publication date: 1989-02-07

Abstract

Изобретение относитс к области автоматики и вычислительной техники. Цель изобретени - повышение точности умножени и расширение диапа- зона изменени выходного сигнала. Множительное устройство содержит первый преобразователь 1 напр жени в частоту, преобразователь 2 периода в код, генератор 3 импульсов и второй преобразователь 8 напр жени в частоту, выполненный на интеграторе 4, пороговом блоке 5, формирователе 6 импульсов обратной св зи и управл емом делителе 7 частоты. Принцип .действи устройства основан на преобразовании первого входного напр жени в частоту следовани ш пульсов, формировании кода, пропорционального периоду следовани полученных импульсов , и формировании выходных импульсов , частота следовани .которых пр мо пропорциональна второму входному напр жению и обратно пропорциональна коду периода следовани импульсов первой частоты. Повышение точности и расширение динамического диапазона достигаютс за счет исключени методической погрешности, св занной с пропусками информации при гиперболическом преобразовании периода синхронизации работы преобразова- телен 1, 2 напр жени в частоту и периода в код, а также введением управлени работой второго преобразовател В от преобразовател 2. 1 з.п. ф-лы, 6 ил. (ЛThe invention relates to the field of automation and computing. The purpose of the invention is to increase the multiplication accuracy and broaden the range of output signal variation. The multiplying device comprises a first voltage-to-frequency converter 1, a period-to-code converter 2, a pulse generator 3 and a second voltage-to-frequency converter 8 performed on integrator 4, a threshold unit 5, a feedback pulse driver 6 and a controlled frequency divider 7 . The principle of operation of the device is based on converting the first input voltage to the pulse frequency, generating a code proportional to the period of the received pulses, and generating output pulses, the frequency of which is directly proportional to the second input voltage and inversely proportional to the code of the first pulse period frequencies. Improving accuracy and widening the dynamic range is achieved by eliminating the methodological error associated with missing information when the hyperbolic conversion of the synchronization period of the operation transforms 1, 2 voltage into frequency and the period into a code, as well as the introduction of control of the second converter B from the converter 2 1 hp f-ly, 6 ill. (L

Description

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Claims

Claim

1. A multiplier device containing 15 the first and second voltage to frequency converters, the information inputs of which are respectively the inputs of the task of the first and second device factors, about m ~ 20, characterized in that, in order to increase the accuracy of the multiplication in the extended range of variation of the signal of the factors , an additional pulse generator and 25 period-to-code converter are introduced into it, and the second voltage-to-frequency converter contains an integrator, a threshold block, a feedback pulse generator, and an inventive frequency divider 30, wherein the first voltage-to-frequency converter is connected by the clock input to the first output of the pulse generator, and the output is connected to the information input of the period converter in the code connected by the clock input to the first output of the pulse generator, and the information output and overflow output to the control blocking input and input to the output pulses of a controlled frequency divider, respectively, the output of which is the output of the device and is connected to the input feedback pulse generator connected to the second output of the pulse generator and the counting input of the controlled frequency divider, the first and second information inputs to the first and second outputs of the threshold block, the first output to the resolution input of the controlled frequency divider, and the second output to the inverting input of the integrator, the output of which is connected to the information input of the threshold block, and the non-inverting input of the integrator is the information input of the second converter tions in frequency.

2. The device according to p. ^ Characterized in that the pulse shaper contains feedback. there is an inhibit element, two triggers and a switch, and the inhibit element is connected by an output to the clock input of the first trigger, the inhibit input - to the gate input of the feedback pulse shaper and the clock input of the second trigger, and the signal input - to the output of the first trigger, the first output of the reverse pulse shaper communication and the control input of the switch, the signal inputs of which are connected to the input voltage reference bus and the zero potential bus of the device, and the output to the second output of the driver in feedback, while the first trigger is connected by the information input to the first information input of the feedback pulse shaper, and the zeroing input is connected to the output of the second trigger, the information input and unit input of which are connected to the second information input and the input of initializing the former feedback pulses, respectively.

- 1456972 Fig. 3

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Compiled by S.Kazinov