J= H (S) - H (S/nj). (2)
Level of uncertainty of system states before the check in condition that system can be unworkable as a result of appearance of only one any diagnose from their general quantity with probability qk is calculated by the formula:
(3)
Level of uncertainty of system states after the check:
(4)
Where - total probability of appearance of m diagnoses, which are enveloped by the check ni; qn - probability of appearance of diagnose from totality m, enveloped by the check ni.
Then (5)
Setting of the diagnose in the system should be begun from the check ni, which carries the greatest quantity of information. As a result of making of the check table 1 is transformed. We will two tables as a result of this. If in the first check it is fixed that sign was confirmed (such situation is signed as R = 1), diagnoses should be looking for in that totality, with which this sign has stochastic relation. Second step for refinement of diagnose is made with the help of transformed table, which includes m diagnoses. As in the previous case setting of diagnose will be made with taking into account quantity of information, got during second check. Quantity of information in this case is calculated by the formula:
(6)
If R = 0, that means sign is not confirmed, then search of diagnose is made by another transformed table, which includes diagnoses from the number m+1…N. in such case quantity of information is calculated by formula:
(7)
For usage of expressions (1) - (7) it is made table of calculated-informational data (table 2).
Table of calculated-informational data. Table 2
№
Parameters and features
System components diagnoses
Sq
I
D1
D2
D3
D4
D5
D6
1
X1
0.25
0
0,25
0.81
2
0.31
0,31
0.88
3
0.56
0.98
4
X2
5
0.13
0.55
6
0.38
0.95
7
X3
0. 19
0.69
8
0.06
0.32
9
10
X4
11
X5
Algorithm for checking of aggregate state. Table 3
row
#
0.44
0.99
1.00
0.29
0.86
0.43
0.65
0.93
0.76
0.79
0.23
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