![background image](http://html.mh-extra.com/html/omron/e5zd/e5zd_operation-manual_744358072.webp)
62
3-7
Features
3-7-1 Fuzzy Parameters
The E5ZD-8F
jjjj
-E has three parameters: fuzzy strength, fuzzy scale 1,
and fuzzy scale 2.
The fuzzy strength, which is an output membership function scale, is used to in-
crease or decrease the amount of fuzzy control. The larger the fuzzy strength is,
the more fuzzy control will be exerted.
Fuzzy scale 1, which is an input membership function scale, determines the size
interpretation of the temperature deviation. The larger the fuzzy scale 1 value is,
the greater the amplitude of external disturbance is seen for the same distur-
bance.
Fuzzy scale 2, which is a deviation derivative input membership function scale,
determines the size interpretation of the deviation derivative. The larger the
fuzzy scale 2 value is, the slower the speed of external disturbance is seen for
the same disturbance.
–FUS1
0
+FUS1
Fuzzy scale 1
Deviation
–FUS2
0
+FUS2
Fuzzy scale 2
Derivative of
deviation
–FU
0
+FU
Fuzzy strength
Fuzzy control output
Fuzzy logic circuitry
I/O of Fuzzy Control Circuitry
3-7-2 Affects of Fuzzy Parameters
Fuzzy Strength
Overshooting and undershooting will decrease when the fuzzy strength is in-
creased. If the fuzzy strength value is too large,however, temperature oscillation
will occur. When the fuzzy strength value is small, overshooting or undershoot-
ing will increase but temperature oscillation will decrease. When the fuzzy
Fuzzy Control
Section 3-6
Содержание E5ZD
Страница 1: ...Cat No Z042 E1 4 Multipoint Temperature Controller E5ZD ...
Страница 2: ......
Страница 3: ...E5ZD Multipoint Temperature Controller Operation Manual Revised November 1996 ...
Страница 4: ...iv ...
Страница 6: ...vi ...
Страница 8: ......
Страница 10: ......
Страница 18: ......
Страница 76: ......
Страница 128: ......
Страница 132: ......
Страница 142: ......
Страница 146: ......
Страница 148: ......
Страница 150: ......
Страница 154: ......
Страница 157: ...Cat No Z042 E1 4 E5ZD Multipoint Temperature Controller OPERATION MANUAL ...