63
strength is 0, the fuzzy control circuit will not work and only the PID with feed-for-
ward circuitry will work.
Fuzzy strength
Small
Large
Waveform Changes vs. Fuzzy Strength Value Changes
Fuzzy Scale 1
When the value of fuzzy scale 1 is large, response will be slow, temperature os-
cillation will be reduced, and overshooting and undershooting will increase
when the temperature is a long way from the set temperature. When the value of
fuzzy scale 1 is small, response will be fast and overshooting and undershooting
when greatly separated from the set temperature will decrease, but temperature
oscillation will increase.
Waveform Changes vs. Fuzzy Scale 1 Value Changes
Fuzzy scale 1
Large
Small
Fuzzy Scale 2
When the value of fuzzy scale 2 is large, response will be slow, temperature os-
cillation will be reduced, and overshooting and undershooting will increase
when the temperature rapidly returns to the set temperature. When the value of
fuzzy scale 2 is small, response will be fast and overshooting and undershooting
when rapidly returning to the set temperature will decrease, but temperature os-
cillation will increase.
Waveform Changes vs. Fuzzy Scale 2 Value Changes
Fuzzy scale 2
Large
Small
Note
The values of fuzzy scales 1 and 2 will be automatically adjusted when the PID
constants are autotuned or changed by communications.
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 ...