SU1376083A1 - Random event flow generator - Google Patents

Abstract

The invention relates to computing and can be used in modeling systems, taking into account the influence of interconnected random external factors, in constructing computational and modeling factors; devices, as well as in the construction of automated test complexes. The purpose of the invention is to increase speed. The random event flow generator contains a pulse generator, a counter, a block of memory registers, a comparison block, a random pulse sensor, a group of elements AND, a group of: counters, a memory register, a decoder, a switch, a block of elements OR, a random code taken from the output the last counter is the sum of random codes generated over the time of action: the decision signals in all counters of the group. 1 il. with (L

Description

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The invention relates to computing technology and can be used in modeling systems, taking into account the influence of interconnected random external factors, in constructing computing and modeling devices, as well as in constructing automated test complexes.

The purpose of the invention is to increase the speed of random event flow generators.

The drawing shows a functional diagram of the generator.

The random event flow generator contains 1 clock pulse generator, counter 2, block 3 of memory registers, block 4 comparisons, sensor 5 random pulses, a group of 6 elements I, group 7 of counters, register 8 of memory, a decoder 9, switch 10, block 11 elements OR. The random event stream generator works in the following 1 way.

When the code in the counter. 2 is zero, at this moment, at the output of all the comparison circuits of the comparison unit 4, resolution signals start to be generated, the duration of which is determined by the value of the code entered; into the corresponding memory register of the block 3 memory registers. The values of the codes recorded in the memory registers of block 3 of memory registers are determined by the type of autocorrelation function being reproduced, and the number of memory registers, comparison circuits, counters, and elements, respectively, in blocks 3, 4, 7, denoted by N, is determined by the number quantization intervals of the reproduced autocorrelation function. Obviously, the greater the N, the Bbmie reproducibility lia each step of the generator operation, the code stored in the previous counter of group 7 of counters, is moved to the next and serves as the initial value of the random variable generated at this step. The shift of codes in the counters 7 of the group occurs on the overflow signal at the output P of counter 2, i.e. any time when the formation of the enabling signals at the outputs of block 4 is completed. The generated random code from the output of the last N-ro counter of group 7 is stored in memory register 8 and then using the decoder 9, the comm

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The tator 10 and block 11 of the elements OR are transformed into a spatially distributed random variable, subject to a given probability distribution law.

The random code taken from the output of the last counter is the sum of the random codes generated during the time of the action - E1; their signals in all counters of group 7.

To reproduce the required autocorrelation function, the duration of the enabling signals is calculated as follows.

The autocorrelation function must be drafted. (i.e., divided by its value at, which is equal to the reproduction of a reproducible random variable) and is represented as a series of N correlation coefficients.

The device allows you to play autocorrelation functions that satisfy the following condition.

, P2) (Ki-K ,,). (Ki., - Ki). Ui If condition (1) is satisfied, then the duration of the enabling signals is calculated by the formulas

 T; (К: -К, „.) Т,, 2N, (2)

where T () TO, K „, 0; L is the pulse counter 2 pulse width; T - the period of the pulse

1 clock pulse generator.

With such a length of resolution signals, the overlap values are proportional to the corresponding correlation coefficients.

Claims (1)

Invention Formula A random event flow generator containing a group of counters, a clock pulse generator whose output is connected to a counter input of the counter, whose information input is connected to the first group of inputs of a comparison unit, the second group of inputs of which is connected to the outputs of a block of memory registers, a counter overflow output connected to the input synchronization of the memory register, the output of which is connected to the input of the decoder, the output of which is connected to the information input of the switch, the control input of which is the job input Geyoretor distribution law the switch is connected to the input of an OR block whose output is the generator output, a random pulse sensor whose output is connected to the first inputs of elements AND of a group, the second inputs of which are connected to a group of outputs of a comparison block, outputs of elements AND of a group are connected to the counting inputs of the corresponding group counters, characterized in that, in order to increase the with 0 neither the speed, the resolution inputs of the recording of the group counters are connected to the counter overflow output, the information input of the memory register is connected to the output of the N-ro group counter, the initial setup input of the first group counter is connected to the zero potential bus, the output of each group counter except N-ro, connected to the input of the initial installation of each subsequent group counter. 8mo9