SU1298742A1 - Random process generator - Google Patents

Abstract

The invention relates to the field of computer technology and can be used in the construction of automated test kits. The aim of the invention is to improve the accuracy of the generator. The generator contains a sensor 1 of streams of random pulses, triggers 2.3, elements AND 4.6, pulse generators 5, 12, counters 7, 10, 13, element OR 8, block 9 of memory, register 11 of memory, group of multiplexers 14. 2 Il.

Description

The invention relates to computing and can be used in modeling systems, taking into account the influence of random external; influences, in the construction of stochastic computing and simulation devices, as well as in the construction of automated test complexes.

The purpose of the invention is to achieve a precision 3 of trigger 3 in a trigger 2 control, in the generator of a generator.

FIG. 1 shows a timing diagram of the main signals; in fig. 2 - generator circuit diagram.

As a result, the zero logic level at the second inputs of elements I 4 and 6 prohibits the passage of imps from sensor 1 and generator 5 and

The device contains a sensor 1 - 5 pulses, respectively, to the outputs

for random pulses, first 2 and second triggers 3, element 4, generator 5, element 6, pulse counter 7, element 8, memory block 9 counter 10, memory register 11, generator 12 pulses, counter 13, group multiplexers 14.

Consideration of the generator will start from the time when the output of the counter 13 by the overflow pulse, which sets trigger 1 to one, writes the control code to the counter 7 read from memory block 9 at the address in the counter 10, increments the value of the counter 10 by one and writes the code stored in memory register 11 to counter 13. The first pulse from sensor 1 examining the operation of the proposed generator rewrites the single value of trigger 3 into trigger 2, with the result elements 4 and 6 are opened. Pulses from a generator

the pulse torus 5, the passage through the opening element I 6, reduce the contents of counter 7, at the output of which the overflow pulse appears after a time determined by the frequency of the generator of 5 pulses and the value of the control code recorded in counter 7 from memory . The overflow pulse of counter 7 writes the new control code to counter 7, read from memory block 9, at the address found in counter 10, and increments the counter 10 value by one. Each overflow pulse of counter 7 writes the new value of the control code to the counter 7 and increases the contents of the counter 10 by one until the second comes from the moment of considering the work of the proposed generator

The pulse from sensor 1, which passed the AND 4 element, with its front rewrites the code of the interval number from counter 10 to memory register 11 and sets the trigger 3 to its zero state, and with its decay sets the counter 10j to the zero state directly 1 rewrites the zero state triggered by which the zero logic level at the second inputs of elements 4 and 6 prohibits the passage of pulses from sensor 1 and generator 5 to them

elements 4 and 6.

The probability that the value of the i-th code of the quantization interval number from counter 10 is recorded at memory register 11 at a random time depends on the storage time of the i--code of the quantization interval number in counter 10, and therefore, on the size of the control code stored at (1-1) -th address in memory block 9. Treason led ranks governing

codes in memory block 9, it is possible to control the likelihood that the code M of the memory will be recorded

or another number of the quantization interval, i.e. reproduce the desired probability distribution function. By the overflow signal of the counter 13, a new random test is started and the new contents of the register 11 of the memory 11 are overwritten into the counter 13.

The pulse generator 12 and the counter 13 translate the code recorded in the counter 13 into the time interval between adjacent signals generated by the generator, at the same time a new random test is conducted, as a result of which a new random one is formed, the code in the memory register 11. The intensity of the output signal of the secondary signals generated by the proposed generator is adjusted by changing the frequency of the signals following.

pulses from generator 12, which does not affect the type of reproducible probability distribution function.

Let us now consider the operation of the proposed generator in non-stationary mode, i.e. procedure for changing the generator to reproduce probabilities. Rebuilding is done by writing codes from

3129

external source to memory block 9 through a group of multiplexers 14, using a control computer or other means of generating control

codes.

The following are the mathematical relationships that allow determining the values of the control codes based on the probability vector P ,, ..., obtained by quantizing the probability distribution function over n intervals.

The value of the control codes is calculated by the formula

TO; 2-p. ,

Kj is the control code stored at 1-1;

R. - probability of entry in

register 11 of code memory equal to i;

L is the counter width of 7 pulses.

The period of the following pulses of the 25th element of And, the first input of which

The pulse rate of 5 pulses is determined by the formula

T,

li

connected to the output of the second pulse generator; the output of the random pulse flow sensor is connected to the synchronization input of the first trigger and 30 to the first input of the second element AND whose output is connected to the write input of the memory register, the zero counter of the second counter and the zero reset of the second trigger whose output soy-2

Here, T is the maximum interval between random pulses of the sensor 1 of streams of random pulses.

The pulse duration period is 5 dinene with the information input of the first generator of 12 pulses: so; a trigger whose output is connected to

Claims (1)

the second inputs of the first and second elements AND, the address inputs of the multiplexers of the group are combined and are Formula 40 of the invention with the input Boot resolution, the information input of the memory unit and the random process generator, the second second information inputs containing the random pulse sensor, the multiplexers of the group are input the first pulse generator, the register of the assignment of the law of distribution of memory, the output of which is connected to the 45th generator, the write input of the memory unit. the input of the installation of the first counter, which is detected by the input of the reference mode, the overflow rate of which is the rator. generator output, the output of the first pulse generator is connected to the counting input of the first counter, so that, in order to ensure the accuracy of the generator, the first and second triggers, the first and second And elements, the memory block, the second and third counters, group pa multiplexers, element 1-SHI, the bit outputs of the second counter are connected to the same-named bits of the information input of the memory register and to the first information inputs of the corresponding groups {, ultiplexors, the outputs of which are connected to the corresponding address bit inputs of the memory unit, the output of which is connected to the installation input of the third counter, the overflow output of which connected to the first input element OR, the output of which is connected to the counting input of the second counter and to the recording input of the third counter, to the counting input of which the output is connected is connected to the output of the second pulse generator, the output of the sensor of the streams of random pulses is connected to the synchronization input of the first trigger And the output which is connected to the input register of the memory register, the unit zeroing the second counter and the input zeroing the second trigger, the output of which soyout From ditnana 1 From trigger 2 From trigger 3 From slenent And From c4em4iiHQl Exit counts. W Entering in register 11 nuMfimu 9g.1 Editor E. Papp Compiled by I. Stollow Tehred I. Khodanichcorrector A. Zimokosov Order 890/51 Circulation 673 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d, 4/5 Production and printing company, Uzhgorod, st. Project, 4