SU1124293A1 - Random process generator - Google Patents

Abstract

A GENERATOR OF A RANDOM PROCESS, containing a counter, the overflow output of which is connected to the clock input of a pseudo-random number generator, a group of multipliers with a constant coefficient, whose BHXojr ii is connected to the corresponding inputs of the adder, the output of which is connected to the first input of the multiplier, the output of which is the output of the generator The clock input of which is the counting input of the counter, the outputs of the bits of which are connected to the inputs of the corresponding bits of the decoder, the outputs of which are connected to the corresponding and the code-voltage converter inputs, the output of which is connected to the second multiplier input, characterized in that, in order to simplify the generator, the outputs of the pseudo-random number generator bits are connected to the inputs of the corresponding multipliers by a constant Group coefficient.

Description

The invention relates to computing and can be used to generate narrow-band random processes used in mathematical modeling of complex technical objects on a computer, in vibration testing systems and in a number of other cases. A random generator is known that contains a shift register whose input is the input of the generator, the adder whose input is the output of the generator, and the inputs are connected to the multiplier of the multiplier unit, respectively, frequency converter, counter decoder, code-voltage converter and key block The outputs of which are connected to the inputs of the block of multipliers, the first inputs - to the output of the converter code - voltage, whose inputs are connected to the outputs of the decoder, the inputs of which are connected to the output of the counter, whose input th through the frequency converter is connected to the input of shift register .sdvig 1 .. A disadvantage of the device is the large amount used equip Vani. The closest to the technical essence of the invention is a random process generator containing a shift register, whose information input is the first input of the generator, a group of multiplication units whose outputs are connected to the corresponding inputs of the summing unit, the converter voltage code, the inputs of which are connected to the corresponding the decoder outputs, the multiplier and the counter, whose input is the second input of the generator, the discharge outputs of the counter are connected to the corresponding input of the decoder, and the output The counter is connected to the shift input of the shift register, the outputs of which are connected to the inputs of a group of multiplication blocks, and the output of the converter code-voltage is connected to the first input of the multiplier, the output of which is the generator output, and the second input of the multiplier is connected to the output of the summing block. The equipment necessary to ensure the operation of this device also includes a clock pulse generator, the output of which 31 is connected to the counter input and the source of the banir random pins connected by its output to the information input of the Shift register 2. The latter leads to additional hardware costs, which determines the main drawback of the device for generating a random narrowband process. . The aim of the invention is to reduce the equipment by eliminating the source of binary random numbers and organizing such a source on the basis of the shift register located in the digital filter set. and the process of generating random numbers and filtering is carried out simultaneously using the same shift register. The goal is achieved by the fact that in a random process generator containing a sensor whose overflow output is connected to a clock input of a pseudo-random number generator, a group of multipliers for a constant coefficient, the outputs of which are connected to the corresponding inputs of the adder, the output of which is connected to the first input of the multiplier, the output which is the output of the generator, the clock input of which is the counting input of the counter, the outputs of the bits of which are connected to the inputs of the corresponding bits of the decoder, the outputs which is connected to the corresponding inputs of the converter code - voltage, the output of which is connected to the second input of the multiplier, the outputs of the bits of the pseudo-random number generator are connected to the inputs of the corresponding multipliers by a constant coefficient of the group. FIG. 1 shows a functional diagram of the generator} in FIG. 2; a diagram of the operation of the generator in FIG. 3 is a graph of the spectral power density of the generator. The generator contains a generator of 1 pseudo-random numbers, multipliers by a constant factor 2, adder 3, converter 4 ko (- voltage, decoder 5, counter 6, multiplier 7, The generator works in the following way. The input of counter 6 receives clock pulses from an external generator.

31

From the input sequence of clock pulses (Fig. 2 a), by recalculating counter 6, generates shift pulses at the input of the shift of the 1 pseudo-random number generator.

The state of the counter 6 is decrypted by the deshair 5, while the outputs of the latter appear signals (Fig. 2 s, s), which, arriving at the converter 4, form the levels U then 2 l) Zl), 2 -d etc. (fig. 2 f).

The signal thus generated is fed to the input of the multiplier 7. To the other input of the multiplier 7, a signal is received from the output of summing unit 3, to the inputs of which from the output of unit 2 signals are received.

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equal to the product of the state (O or 1) of the corresponding bit of register 1 by the corresponding coefficient of the digits of the non-recursive filter.

The entry of arbitrary non-zero information in shift register 1 occurs during the initial

turning on the device. In this case, the triggers of the register t are arbitrarily set to one of the stable states O or 1. If for the trigger the setting is

of equal states, then

the likelihood of simultaneous installation of all the triggers in O is very small, jEc if it does happen, the operator only has to re-produce

ti off and on the device.

Claims (1)

A RANDOM PROCESS GENERATOR containing a counter, the overflow output of which is connected to the clock input of the pseudo-random number generator, a group of multipliers as a constant coefficient, the outputs of which are connected to the corresponding inputs of the adder, the output of which is connected to the first input of the multiplier, the output of which is the output of the generator, whose clock input is counting input of the counter, the outputs of the bits of which are connected to the inputs of the corresponding bits of the decoder, the outputs of which are connected to the corresponding input E-code converter voltage, the output of which is connected to the second input of the multiplier, characterized in that, in order to simplify the generator, the generator outputs § bits pseudorandom numbers connected to inputs of corresponding multipliers by a constant factor group. SU,. „1124293