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PD controller:

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in Control Systems by (105k points)
PD controller:

(a) Decreases steady state error and improves stability

(b) Rise time decreases

(c) Transient response becomes poorer

(d) Increases steady state error

The question was posed to me by my college director while I was bunking the class.

This interesting question is from Cascade Compensation in Time Domain topic in chapter Design of Control Systems

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Best answer
Correct option is (b) Rise time decreases

To elaborate: In Proportional and Derivative controller the damping factor value is increases the oscillations are reduced and rise time decreases hence speed of response increases.

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