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In PD controller, the derivative action plays a significant role in increasing _______ of response.

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  1. time
  2. distance
  3. volume
  4. speed

Answer (Detailed Solution Below)

Option 4 : speed
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Proportional Derivative (PD) controller:

  • A type of controller in a control system whose output varies in proportion to the error signal as well as with the derivative of the error signal is known as the proportional derivative controller. 
  • This type of controller provides combined action of both proportional and derivative control action.
  • This controller produces an early corrective response for even a small value of error signal thereby increasing the stability of the system.
  • For the PD controller, the output is given as:

           

where, Kp = Proportionality constant

KD = Derivative constant

e(t) = Error signal

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