ITPEC FE Morning April 2020 Question 74
ITPEC FE Morning April 2020 — Question 74 of 80
Fuzzy Control — a control method that uses vague, linguistic values like "slightly" or "somewhat large" instead of precise numbers.
Fuzzy control handles imprecise input by defining membership functions for linguistic terms (e.g., "low", "medium", "high") and applying fuzzy logic rules to determine output actions. This makes it ideal for systems where exact measurements are unnecessary or unavailable.
Why not others:
- (a) Feedback control — uses precise measured values to correct deviations from a setpoint; not based on vague terms
- (c) PWM control — modulates power delivery by varying pulse width; a signal technique, not a decision-making method
- (d) Sequence control — executes predetermined steps in a fixed order; no linguistic reasoning involved
Key rule: Words like "somewhat," "slightly," or "approximately" in a control context always point to fuzzy control.
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