SAMWONTECH
1st Edition of TEMP880S IM : Sep. 21. 2005 Page 34 / 101
▶ If load changes intensely and set point frequently changes, overshoot may occur. Fuzzy
▶ can control overshoot effectively.
▶ Internal motion of fuzzy function
○
1 When pointer value (PV) gets close to set point (SP), supporting set point (SUPER SP)
▶ starts calculating.
○
2 Treat this calculated value from the previous step as set point and calculate control
▶ output (MV).
☞ Overshoot is repressed.
▶ Changes of pointer value (PV) according to the function of fuzzy.
Fuzzy OFF Fuzzy ON
Fuzzy Motion
PV
SP
Fuzzy ON
PV
SP
SUPER SP
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