SU1116524A1 - Random signal generator - Google Patents

Abstract

A GENERATOR OF RANDOM SIGNALS, which contains a noise generator, a series-connected clock generator, an adjustable delay element and an AND element, as well as an output B-trigger, which is designed to increase the accuracy of generating random signals with a given probability distribution, A comparatively connected storage unit, whose input is connected to the output of the noise generator, a comparator and the first RS flip-flop, whose output is connected to another input of the And element, is connected to it The second constant delay element and the second RS flip-flop, the counting input of which is connected to the output of the element I, and the output to the k-input of the output D-trigger, also introduces a generator that changes linearly; its voltage to the other input the comparator, while the generator inputs of the linearly varying voltage, the constant delay element, the counting input of the first RS trigger and the clock input of the output 1) trigger, are combined and connected to the output of the clock generator.

Description

The invention relates to computing, namely: to computing devices simulating random processes, and can be used in statistical modeling.

A known noise generator comprising a series-connected noise source, a video amplifier, a key with a memory element and a tunable linear-variable voltage generator, the output of which is connected to the input of the output power amplifier and, via a pulse shaper, to a control input of a key with memory element L1.

However, the known noise generator does not allow to generate a random sequence of pulses with the pulses standing at regular time positions and does not allow changing the probability parameters of the generated random process.

The closest technical solution to the proposed is a random signal generator containing a noise generator, a series connected clock pulse generator, an adjustable delay element, an AND element and an output T-trigger, as well as an adder, one input of which is connected to the output of the noise generator, the other input - to the output of the control voltage source, and the output to the control of the control of the input of the adjustable delay element, the output of which is also connected, to one input of the NOT element, whose output is connected to another D-flip-flop output, the other inputs of AND and NOT element are combined and connected to the output of clock pulse generator 12.

However, in this random signal generator, the probability of an event can be set with limited accuracy.

The purpose of the invention is to increase the accuracy of the formation of random signals with a given probability distribution.

The goal is achieved by the fact that a random signal generator containing a noise generator,

serially connected clock generator, variable delay element and element And, as well as the output D-trigger, input

serially connected storage unit, the input of which is connected to the output of the noise generator, a comparator and the first RS trigger, the output of which is connected to another input of the AND element, serially connected constant delay element and the second RS trigger, the counting input of which is connected to the output of the AND element, and the output to the T) input of the output T-trigger, as well as a generator of linearly varying voltage, the output of which is connected to another input of the comparator, and the inputs of the generator of linearly varying voltage, For this delay, the counting input of the first RS flip-flop and the sync input of the output E-trigger are combined and connected to the output of the clock generator.

Tsa FIG. Figure 1 shows the structural electrical circuit of the proposed random signal generator; in fig. 2 - time diagrams that show his work.

The random signal generator contains noise generator 1, storage unit 2, comparator 3, 4 clock pulse generator, generator 5 linearly varying voltage, first 6 RS flip-flop, element 7, regulable delay element 8, constant delay element 9, the second RS trigger 10 and the output D-trigger 11.

The random signal generator works as follows.

At the time of occurrence of a pulse at the output of the 4 clock pulse generator (Fig.2), the value of voltage (Fig.21), corresponding to the instantaneous voltage value at the output of the noise generator 1 (Fig. 2), is stored in memory unit 2. but). At the same time, the generator of the linearly varying voltage is started and the first 6 RS flip-flops are set to one. At the moment of equality of the voltages at the output of the generator 5 of the linearly varying voltage (Fig. 2 q) and the storage unit 2 (Fig. 2 1), the comparator 3 (f. D. 2e) will work and the first 6 PS flip-flop will return to the zero state. simultaneously in the initial state 3. a generator of linearly varying voltage is established. Thus, at the output of the first 6 R5 trigger, a pulse will appear (FIG. 2), the duration of which is a random variable evenly distributed in the time interval (C – T), since the sample from the implementation of the random noise generator 1 process is uniformly distributed over a range of stresses. If the pulse delayed by the element of the adjustable delay 8 (Fig. 2 b) is faster than the first. (The first 6 Rb trigger is set to the zero state, then through the And 7 element (Fig. 2) the second 10 RS flip-flop is set At the moment of appearance of a pulse at the output of the generator 4 clock pulses (Fig. 25), the leading edge of this pulse enters the output 15-trigger 11 of the second 10 RS-trigger (Fig. 2k), which is 244 times the time required for writing to output trigger 11 with the same pulse through constant delay element 9 (fig. 2) is set Thus, at the moments of occurrence of pulses at the generator output 4 clock pulses, logical O and 1 will appear at the output of the output C-flip-flop 11 (Fig.2L) of occurrence, determined by the ratios between the period of T-generation of pulses by the generator of 4 clock pulses and the delay time at the element of adjustable delay 8. The technical and economic effect consists in increasing the accuracy of generating random signals with a given probability distribution STI control random process parameters (the probability of occurrence of logical 1 O n) simple way.

.xd / clg / / l

oh I

Claims (1)

A RANDOM SIGNAL GENERATOR, comprising a noise generator, a clock pulse generator connected in series, an adjustable delay element and an I element, as well as an output T) trigger, in which, in order to increase the accuracy of generating random signals with a given probability distribution, a memory block is connected in series, the input of which is connected to the output of the noise generator, a comparator and the first RS-trigger, the output of which is connected to another input of the And element, serially connected constant delay and a second RS-trigger, the counting input of which is connected to the output of the And element, and the output to the kT> -input of the output D-trigger, and a linearly varying voltage generator is introduced, the output of which is connected to another input of the comparator, while the generator inputs are linearly the changing voltage, the constant delay element, the counting input of the first RS-trigger and the synchronization input of the output D-trigger are combined and connected to the output of the clock generator. FIG. f