Rockwell Automation RSLogix 5000 Fuzzy Designer - Manual (Page 51)

Publication LOGIX-UM004A-EN-P - March 2007
FuzzyDesigner Component Library 51
Set of Rules Example Evaluation Procedure
Example of a Block Diagram of the Rule Block Evaluation
1. (small, negative) Æ (medium [0.9] , positive [1.0])
0.4 0.1
min
premise part: DOF = 0.1
voltage
small , medium , large
0.0 , 0.09 , 0.0
current
zero , positive
0.0 , 0.1
* 0.09
* 0.1
2. (large, negative) Æ (small [0.8] , )
0.8 0.1
min
premise part: DOF = 0.1
voltage
small , medium , large
0.08 , 0.0 , 0.0
current
zero , positive
0.0 , 0.0
* 0.08
3. ( , positive) Æ (small [1.0] , positive [1.0])
0.5
min
premise part: DOF = 0.5
voltage
small , medium , large
0.5 , 0.0 , 0.0
current
zero , positive
0.0 , 0.5
* 0.5
* 0.5
total DOF = maximum
voltage
small , medium , large
0.5 , 0.09 , 0.0
current
zero , positive
0.0 , 0.5
1. (small, negative) Æ (medium [0.9] , positive [1.0])
0.4 0.1
min
premise part: DOF = 0.1
voltage
small , medium , large
0.0 , 0.09 , 0.0
current
zero , positive
0.0 , 0.1
* 0.09
* 0.1
2. (large, negative) Æ (small [0.8] , )
0.8 0.1
min
premise part: DOF = 0.1
voltage
small , medium , large
0.08 , 0.0 , 0.0
current
zero , positive
0.0 , 0.0
* 0.08
3. ( , positive) Æ (small [1.0] , positive [1.0])
0.5
min
premise part: DOF = 0.5
voltage
small , medium , large
0.5 , 0.0 , 0.0
current
zero , positive
0.0 , 0.5
* 0.5
* 0.5
total DOF = maximum
voltage
small , medium , large
0.5 , 0.09 , 0.0
current
zero , positive
0.0 , 0.5
0.4
0.8 0.8
small small
large large
temperature
0.1
0.5 0.5
negative negative
positive positive
pressure
0.2 0.2 zero zero
small small
negative negative
medium [0.9] medium [0.9]
positive [1.0] positive [1.0]
Æ
large large
negative negative
small [0.8] small [0.8]
Æ
positive positive
small [1.0] small [1.0]
positive [1.0] positive [1.0]
Æ
0.5
0.0
small
large
voltage
0.09 medium
0.0
0.5 0.5
zero zero
positive positive
current
Rule Block
max
max
max
max max
max max
0.09
0.1
0.08
0.0
0.5
0.5
Ж
Ж
temperature
pressure
voltage
current