SU1224807A1 - Device for determining period of reconditioning technical object with dependent failures - Google Patents

Abstract

This invention relates to the field of control. The invention makes it possible to determine the number of different types of spare blocks for technical objects with dependent failures as a result of calculating and displaying the value of the guaranteed likelihood of ensuring operable condition in the presence of one, two AND spare blocks of each type taking into account the total intensity of their dependent failures. Under the action of the control signals from the decoder 9 and from the register 12j in which I is written, the row of the reachability matrix indicates which blocks will fail after the failure of the f-th block, the keys 13j-13 are passed to the corresponding adders, the failure rate recorded in the block ; th block. By passing the signal with i (L you y 4 oo

Description

the last output of the decoder content of adders 2j is equal to the total intensity of the dependent failures of the j -th block And j. As a result of the comparison, in blocks 16, the node number of the assignment of guaranteed probability is determined, corresponding to 1

The invention relates to computing technology and can be used in the study of random processes, for example, to determine a sufficient number of spare blocks that ensure the operational state of a technical object with guaranteed probability.

The purpose of the invention is to expand the functionality of the device by making it possible to determine the number of different types of spare blocks for technical objects with dependent failures.

The essence of the invention is that for a technical object with known dependencies of failures between blocks, the failure rate of the blocks is determined as the sum of the own failure rate (L;) and the failure rates of other blocks (including jn, which failures will lead to failure of the i-th block, i.e.

-A L; + .., I am j + ... + l.

Then, at a known operating time (T), the value of T is determined and the guaranteed probability of ensuring a healthy state with a stock of one, two, ...., .., n blocks during operation, equal to T, is displayed

Fig. 1 shows a block diagram of the device, Fig. 2 shows a block diagram of a setter of guaranteed probability.

The device contains switches); failures, adders, channels 3, -3k, calculation of guaranteed probability, digital-to-analog converters 4, -4., block 5 of constant voltage sources, block 6, setting a constant coefficient.

1224807

T value, where T is the period of operation of a technical object. The indication indicator is displayed in the ACTsaMtii. The guaranteed probability of working condition in the presence of from one to n spare blocks of the lth type is displayed. 3 il.

7 pulse generator, counter 8 and a decoder 9,

Failure switch 1 contains delay element 10, counter 11, register 12 and keys 13.-13.,

t l

The guaranteed probability calculation block 3 contains a multiplication element 14, a signal-distribution valve distributor 15, comparison elements 16, -16, guaranteed probability assignment nodes 17, -17 and elements 18, -18 and fDH

diction ,.

The guaranteed probability setting node 17 contains a block 19 of setting constant coefficients, AND elements, analog-digital converters 21, -21 and decoders 22, -22 ".

The device works as follows.

Codes whose values are proportional to the intensity of

Mast of failure bounces,. The technical object for which the recovery resource is determined. These codes are entered into the corresponding adders .. In registers 12, -12 | the matrix of failures of blocks of a technical object is entered line by line. In block 16, a voltage is established proportional to the operating time of the technical object with a guaranteed probability of failure-free operation. At the i-th output of block 5, the voltage is proportional to 1 1, m. As a rule, for an inerner practice, 5 is limited by the values of LT 10. At the outputs of the blocks

19 voltage U. n are proportional to the guaranteed probabilities at certain values of -J for a different, common number of spare blocks 2, 2.

From the output of the generator 7, the first pulse enters the counter 8. At the first output of the decoder 9, the potential of the logical unit appears, which is fed to the first control inputs of the keys 13, -TZ, switch 1j, and also through element 10 to the control input counter 11. In register 12, the first row of the failures reachability matrix of the technical system block is written, i.e. units in bits corresponding to the numbers of those blocks in which failures will occur after the failure of the first block. Consequently, those keys are opened that coincide in number with the bits of register 12 in which the units are written. After a time equal to the delay time of the element 1.0, information from the counter 11, will go to the first inputs of those ctmators 2, - that match the number with the public keys. In the initial state, the value of the intensities of their own failures of the corresponding blocks was already entered into these adders. With these values of failure rates, i 1, k, the failure rate of the first block is summed for those blocks that fail after it goes out of order. After recording the second pulse from the generator 7 into the counter 8, the potential of the logical zero is present on the first output of the decoder 9 and on the first control inputs of the keys 13, switch 1, and from its outputs the information in the process of further operation of the device to the inputs of the adder. 2 does not arrive. The potential of the logical unit from the second output of the decoder 9 is fed to the first control inputs of the keys 13, -13 of the switch 1. The second control inputs of these keys are supplied to the potentials of the logical unit from those bits of the register 122, which coincide in number with the blocks of the technical object, failed after the failure of the second block. After a time equal to the delay time of block 10, the information from the counter llj (i.e., L2) goes to the first inputs of those adders 2, -2, which coincide with the public keys 13;, - 13

to

In the future, the device works similarly.

The values of failure rates i converted in blocks

in t

20

in analog form, arrive at the first input of blocks 14, -14, where. the values are calculated. Using the distributor 15, the output of element 14 is alternately connected to the inputs of elements 16 | -16. The order of connecting the comparison elements is determined by the values of the voltages applied to their inputs from block 5. The connection starts with the comparison element with the highest number, i.e. 16, which has the highest voltage at the second information input,

JC then connects element 1 1 ",., Etc., so long as the voltage at the first information input of the 4th reference element does not exceed the voltage at its second information input. In this case, at the output of the comparison element, the potential of a logical unit appears, which is fed to the control inputs of the elements of the 20th i task setting node with guaranteed 25% probability. Voltages from the outputs of the blocks 19, proportional to the values of the guaranteed probability for the case T. and 2 1, n, are fed to the converters 21. From their outputs, the code goes to the inputs of the decoders 22, where it is decoded and fed to the corresponding digital indicators 18 1- column of the matrix, where the display of the guaranteed probability of ensuring the operational state

with one, two, ..., and spare blocks for the case of XT-i.

Technical advantage of the invention compared to the prototype

 is to ensure the possibility of determining the guaranteed likelihood of a healthy state at a given interval of time with a stock of one ,, and spare blocks for

technical objects with dependent failures.

A positive effect is to increase the accuracy of determining the sufficient number of spare blocks for complex technical objects, which leads to an increase in their performance over a given time interval.

Claims (1)

55 claims Device for determining the recovery resource technical thirty an object with dependent failures k: blocks, containing a multiplication element, a signal distributor, m nodes specifying the guaranteed probability, g and display elements, and m comparison elements, which are connected to the first and second information inputs through the signal distributor, respectively, with the output of the multiplication element of the given channel and with the corresponding output of the constant voltage source block, the second inputs of the multiplication elements of all channels are connected to you Each unit of setting a constant coefficient, the input and outputs of each node, the tasks of guaranteed probability are connected respectively to the output of the corresponding comparison element, and to the inputs of the corresponding display elements, characterized in that, in order to expand the functional capabilities of the device by ensuring the possibility of determining the number of different types of spare blocks for technical objects with dependent failures, the device contains k adders, digital analogue converters, pulse generator, s a sensor, a decoder and k failure switches, the output of the pulse generator through the counter is connected to the input of the decoder, the output of the adder via the corresponding digital-to-analog converter is connected to the first input of the multiplier of the corresponding calculation channel of guaranteed probability, each switch of failures contains an element delay, counter, register and k keys, first 0 controllers whose inputs are connected to the corresponding output of the decoder, also connected via the delay element and the counter of the fault switch with the information inputs of all the keys of the given the commutator, the second control inputs and outputs of which are connected respectively to the outputs of the corresponding bit cells of the register of this fault switch and with the first inputs of the corresponding totalizers, the second inputs of which are connected to the counting inputs of the counters of the corresponding failure switches, each 5, the guaranteed probability setting node contains the assignment block pos-. these coefficients, h elements of AND, n analog-to-digital converters and p decoders, each of which output and input are associated respectively with the output of the node and through the analog-digital converter and the element And node with the corresponding output of the task of the constant coefficients, the second inputs of the elements And the node is connected to the input of the node. f Q} i / t.2 Compiled by S. Demidenko Editor N, Slobod nickname Tehred N. Vonkalo Corrector M. Pojo 1953/48 Circulation 671. Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/5 Production and printing company, Uzhgorod, st. Project 4