SU140095A1 - Device for non-linear time-pulse coding and implementation of functional dependencies on one or two variables - Google Patents

Description

DEVICE FOR NONLINEAR TIME-PULSE CODING AND IMPLEMENTATION OF FUNCTIONAL DEPENDENCE ON ONE OR TWO VARIABLES

Dated June 10, 1960, No. 669525/26, to the Committee on Inventions and Discoveries under the Council of Ministers of the USSR

Published in the Bulletin of Conventions, N 15 and 1961.

Devices for non-linear time-pulse coding are known, in which time-pulse conversion takes place in two stages: the downloaded signals are sent to static functional converters, and then encoded using a saw generator; voltage and comparative circuit.

The proposed device for non-linear time-pulse coding and implementation of functional dependencies on one or two variables differs from linear corrective circuits known for using transient characteristics that correspond to the required static non-linear dependencies, and a comparing circuit used to measure the output pulse width defined by the beginning of the comparison and the moment of coincidence of the input signal and the signal of the transition characteristic of the correction circuit .

The proposed device allows to simplify the process of time-pulse transformation and using simple means to simulate static non-linear dependencies.

In the described device, dynamic analogies are used to establish the necessary non-linear dependence, i.e., the implementation of static non-linear dependencies is carried out by selecting transient curves in linear corrective circuits. The device contains sensors} (see the block diagram), correction circuits, switches 3 to 4, the comparing circuit 5, and a stabilized constant voltage source 6.

No. 140095-- 2 - Switch 4 alternately connects sensor Y and corresponding correction circuits to comparator 5. Switch 3 supplies a stabilized voltage to the corrector circuit connected to the comparator with some delay and gives a pulse to the beginning of the time interval. The pulse of the end of the time interval is generated by the comparator when the voltage of the sensor signal Xg and the signal Z of the transient response of the correction circuit are equal.

The necessary non-linear dependence of the time interval L / on Xi is carried out by selecting a correction circuit, giving the desired transient process. Thus, the duration t of the output pulses of a device is a certain function of the input voltage IJx. Selecting the constant component of the output voltage, we obtain a functional converter (x).

Couplings of no higher than second order can be used as corrective circuits, allowing for very diverse time dependencies. If, instead of the stabilized voltage of the power source, the voltage is applied, which is the second independent variable Uy, then the described device will allow the function of two variables. The voltage at the output of the correction circuit:

U2, Uy / (/),

where f (t) is a single non-current corrective value characteristic. The duration of the time interval D is from the expression:

and, - / (D /) 6 ,, from where

) Selecting the constant component of the voltage f - „„.,., We obtain the functional dependence:

r - f (-).

Takes over - output voltage {/ v, d. get a converter that implements the dependency

g: g / -f (-).

Thus, with the same correction circuit, the device described allows for a number of dependencies on one or two variables.

The described device can be used in tele-measurement systems, in pulse-type calculating devices, in mathematical systems, in non-linear and impulse automatic control systems.

Subject invention

A device for non-linear time-pulse coding and implementation of functional dependencies on one or two variables, characterized in that, for the purpose of simplification, it uses linear correction circuits whose transient characteristics correspond to the required static non-linear dependencies, and a comparing circuit that serves the width of the output pulse, determined by the time interval between the beginning of the comparison and the moment of coincidence of the input signal and the signal of the transient response of the corrective chains. at