SU1432549A2 - Device for simulating failures in complex systems - Google Patents

Description

(61) 902020

(21) L2.18323 / 24-24

(22) 01 „04.a7

(46) 23.10,88 e bull. No. 39

(72) A In Kor OLB 5 G, A, Adamovich j

B, A Cheprunova G.P. ,. Chubatov

(53) 681.3 (088.8)

(56) Copyright witness-alstvo USSR № 902020, cl. C-06 F 15/20, 1980.

(54) DEVICE, 1 MODELING OF FAILURES OF COMPLEX SYSTEMS

(57) The invention relates to computing and can be used for. modeling of random events corresponding to failure of elements in complex systems. The purpose of the invention is to improve the reliability of simulation results,. The goal is achieved by introducing in the device the third register of memory, the third and fourth gruig: AND elements, the decoder, the first and second elements of the NF, the group of frontal amps (shulls, triggers, and the second generator evenly distribute Zlenk tea numbers. The device allows one to eliminate the repeated failure of one and that element of a complex system at the stage of modeling, due to the increased reliability of the model 1p; Baths, 1 silt

The invention relates to computing, can be used to simulate random events corresponding to element failures in complex systems, and is an improvement to the invention by author. No. 902020.

The aim of the invention is to increase the reliability of the simulation results by eliminating repeated failures of the same element of the system.

The drawing shows a diagram of the device, I The device contains a sensor 1 of the first flow of a single pulse, element 2, a single vibrator 3, a pulse counter, an arithmetic unit 5, the first 6 and second 7 registers of memory, the first generator 8 of uniformly distributed random numbers, 9 random numbers generator with a given distribution law, delay element 10, first group of elements 11, second group of elements 12, second generator 13 of uniformly distributed small numbers, third register 14 of memory, third group of elements 15 and 15 , a group of triggers 17, a group of formers 18 pulses, the fourth group of elements And 19, the first 20 and second 21 elements OR.

The device is focused on complex systems, for which the following is characteristic: the system contains a series of elements with the same reliability characteristics; failed components: systems are not restored during system operation; the occurrence of failures of elements O, 1, 2, ... n during the time of the system operation is subject to the binomial law, approximated by the Poisson distribution law; the occurrence time of each failure of an element within the entire operating time is subject to any given distribution law, and the number obtained experimentally.

The device works as follows.

The polling signal corresponding to the regular statistical implementation resets the pulse counter 4, the output of which is the number of counted pulses corresponding to the number of element failures in the previous realization, sets the trigger group 17 to the initial state and starts the one-shot 3 that opens And 2 for a given time corresponding to the time of the system. During this time, the pulses from the sensor 1 of the primary (Poisson) random pulse stream arrive at the counter input 4 pulses at the inputs of the generator 8 of uniformly distributed random numbers, the generator of 9 random numbers with a given distribution law, and when the delayed element 10 controls the inputs of the AND elements 11 and 12, the delay Element 10 is necessary so that the generators 8 and 9, operating in the standby mode, have time to generate and install on the registers 6 and 7 of the memory the corresponding slips before the arrival of the impulse on the pack The incoming inputs of the elements 11 and TC and also managed to work out the schemes providing detection and exclusion of the same numbers characterizing the number of the failed element before the next pulse from the sensor 1 of the primary stream of random pulses, With the arrival of each pulse A from the element 2 after a delay of the inputs of elements 11 and 12 from register 6 of memory are a random number, corresponding to the time distribution of element failures within the time of the system, a parallel code through the elements 11 is fed to the first input a ifmeticheskogo unit 5, and a memory register 7 - another random number. , corresponding to the number of the failed element, parallel code through the elements And 12 enters the second input of the arithmetic unit 5, In the arithmetic unit 5 the first random number. multiplied by t and fed to the first output of the arithmetic unit 5, which is the first output of the device, and the second random number. multiplied by the number of elements of the system N, rounded to the nearest integer and fed to the second code of the arithmetic unit 5. From the corresponding bits of the second output of the arithmetic unit 5 the number of parallel code is fed to the inputs of the decoder 16 and stored in the register 14 of the memory. The latter serves to store the number produced by the generators 1 or. 13 uniformly distributed random numbers and worked by the arithmetic unit 5. Raz33232549

The register number is determined by the number of non-reproducible elements in a given

honestly digits of the number, the implementation implemented. At the end of the re-apa-parallel code from the equilibrium generator on the counter of 4 pulses, accumulated randomly distributed numbers, corresponding to the quality of villages. The decoder 16 produces concomitant failures in the system during the modeling of the positional code, the content of the implementation, With the arrival of the next. the sequence of units and the interrogation pulse is the cycle of operation of the device, at the input of the decoder 16 of the unitarity is repeated to the new country code at the output of the decoder 16, a ju-cal implementation containing the unit at the Kth output,

Claims (1)

the corresponding number of the failed invention formula an item. The signal from the K-th output of the decoder 16 enters the first inputs of the Device for simulating from the K-th trigger 17 and the K-th element I 19. 15 kazov in complex systems according to author. The group of flip-flops 17, the number of which is no. 902020, is different from the number of elements by the study that, in order to increase a reliable system, dp is a memorization of modeling, it additionally contains a second generator equal to - arithmetic unit 5. If a number, 20 evenly distributed random numbers, which were assigned to the decoder 16, is in the third memory register, the third and even implementation appeared for the first time a twisted group of elements And, the decoder is (once), then Kth trigger 17 settler, group of triggers, groups is formed in a single state of pulse flow, the first and second, and from its output, the high level signal is 25 OR elements, and the inputs are decrypted to the second input of the K-th elec- tor, respectively In this case, the second arithmetic group of the second arithmetic unit does not work, as well as at the input-K-th block and the third world Mirror 18 pulse inputs, a pulse from the memory register, whose co-output bits through the RShI element 20 30 are connected accordingly, goes to the control inputs The first element outputs the third elements AND 15, and then the groups are made, the outputs of which are the output from the register 14 of the memory to the house of the number of the failed element of the device — the second output of the device. Formations, and the second inputs of the elements And whether 18 pulses, the number of which gg of the third group is connected to the output is equal to the number of triggers 17, the necessary first OR element, whose inputs are needed to generate a single signal connected to the outputs of the pulse coming to the OR element 20 "group impulse drivers, every time one or more re-enters the decoder is connected to a single number (second, third, etc. by the same input of the corresponding tri-fold), which corresponds to repeated exiting of the group and per the same input of the same element of the SI element, the fourth element of the fourth system, to the input of the decoder of the 16th group, and the zero inputs of all the trigger 17 does not work, i.e. The groups are connected to the input in one state, and from the output, the direct output of each trigger of the K-th element And 19 through the element, the group is connected to the input of the corresponding; - Former of the pulse generator of the nerator group 13 is uniformly distributed and the second input of the corresponding number, forming the new ment And the fourth group, codes the random number f., which paral- 50men And the fourth group connected with the target code goes to the second, respectively, to the inputsthe second element of the arithmetic unit 5., the ment OR, the output of which is connected with the same way, and the launch of the second generator reveals the same numbers, characteristic randomly distributed numbers of the failed element, 55 villages, are The codes of which are connected exclusion of occurrences. are not correspondingly with the occurrence of elements of two or more failures of the same item AND of the second group through the installation OR. PIC: CLIP