The transfer function for a P-D controller is________________?
Correct answer: A. Kc(1+ηD s)
- A. Kc(1+ηD s)
- B. Kc(1 +1/ηD s)
- C. Kc ηD s
- D. Kc/ηD s
Explanation
A proportional-derivative controller has transfer function Gc(s)=Kc(1+τD s), where τD is the derivative time. The constant term gives proportional action and the s term gives derivative action.
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