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PD controller is used to compensate system. Compared to the uncompensated system, the compensated system has:

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PD controller is used to compensate system. Compared to the uncompensated system, the compensated system has:

(a) A higher type number

(b) Reduced damping

(c) Higher noise amplification

(d) Large transient overshoot

I got this question by my college director while I was bunking the class.

I'm obligated to ask this question of Cascade Compensation in Frequency Domain in portion Design of Control Systems

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The correct option is (c) Higher noise amplification

To explain I would say: Proportional Derivative controller is used to increase the bandwidth and also increases the signal to noise ratio by reducing the noise and increasing the signal.

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