RU1774352C - Nondistinct values comparator - Google Patents

Abstract

The invention relates to computer technology and can be used to assess the state of an object with a fuzzy setting of the degree of belonging of possible parameter values to a given state of the object. The device comprises shift registers 1, GTI 2, membership function calculation blocks 3, minimum value determination blocks 4, maximum value determination block 5. 1 ill.

Description

The invention relates to computer technology and can be used to assess the state of an object by several parameters with a fuzzy setting of the degree of belonging of possible & x parameter values to a given state of the object.

The purpose of the invention is to expand functionality by forming an estimate of the degree of membership of a fuzzy set to a given clear set.

The drawing shows an electrical structural diagram of the device.

The device contains shift registers 1-1-1-t, a clock generator (GTI) 2, groups 3-1 of blocks 3-1-1-3-th calculation of the membership function, blocks 4-1 determine the minimum value, block 5 determining the maximum value.

The device operates as follows.

Fuzzy numbers are entered to the inputs of the registers 1-1-1-t according to the GTI 2 signals - measurements of 1 parameters characterizing the state of the object Sr (, m;, N, where m is the number of measured parameters; N is the number of cells registers). Thus, in a steady state, in each of the registers there are N samples of the corresponding parameter. Each parameter value corresponds to a value of the membership function.

, (SJ),

characterizing the j-ro belonging of the value of the 1st parameter to a certain given state of the object.

In each block 3-i-j, the membership function value for the current value of Si is calculated. Blocks in a particular case can be made in the form of ROM and programmed for the corresponding membership function, for example, an approximate equality of the linear form

/ is, (s) max {0., i

where Sol, (Л - position and range parameters of the membership function, characterizing

parameter values corresponding to the unconditional state of an object in a given state, and the scope of the membership function, respectively.

5 In blocks 4-1 -4-t, minimum values for each Si (, N) group are respectively allocated. As a result, a plurality of {Simin. , m}:

{SfmmM pSr .j-I.N}}.

The signals of this set are fed to the input of block 5, in which the maximum signal

With | ma {Slmln}.

The resulting estimate lies in the interval (0.1) and determines the degree to which the state of the object belongs to a given one.

Claims (1)

SUMMARY OF THE INVENTION A device for comparing fuzzy values, comprising a clock, a minimum value determining unit, m groups of membership function calculation unit blocks, characterized in that, in order to expand the functionality by forming estimates of the degree of membership of a fuzzy set to a given clear set, m shift registers, t-1 blocks for determining the minimum value and a block for determining the maximum value, and the information input of the 1st () shift register is the input for setting the corresponding fuzzy number of the device, the output of the clock generator is connected to the write enable inputs of the shift registers, the bit outputs of the 1st shift register are connected to the inputs of the corresponding blocks of the membership function calculation of the 1st group, the outputs of which are connected to the corresponding inputs of 1- the first block for determining the minimum value, the output of which is connected to the corresponding input of the block for determining the maximum value, the output of which is the output devices.