Omron E5ZE Operation Manual page 72

Manually Setting PID Constants
Increasing Fuzzy Strength
External
disturbance
Temperature
Set point
Increasing Fuzzy Scale 1
External
disturbance
Temperature
Set point
Reducing Fuzzy Scale 1
Temperature
Set point
The following table shows the tendency of external disturbance response when fuzzy constants are adjusted.
Excessive overshooting
Excessive undershooting
Excessive overshooting
Vibration
Excessive undershooting
Time
Smaller overshooting
External
disturbance
Slow stabilization
Excessive undershooting
Fuzzy constants
Fuzzy strength
Fuzzy scale 1
and fuzzy
scale 2
Excessive value:
Oscillation:
External
disturbance
Temperature
Set point
Time
External
disturbance
Temperature
Set point
External
disturbance
Temperature
Set point
Time
External disturbance response
Excessive
value
Larger Decreases
Smaller Increases
Larger Increases
Smaller Decreases
Overshooting or undershooting
Hunting
Appendix C
Smaller overshooting
Smaller undershooting
Time
Smaller overshooting
Decreased vibration
Smaller undershooting
Time
Quick stabilization
Time
Oscillation Stabilization
time
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Increases
Decreases
Decreases Long
Increases Short
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