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Consider the following statements: A proportional plus derivative controller
1. has high sensitivity
2. increases the stability of the system
3. improves the steady-state accuracy
Which of these statements are correct ?

 
  • a)
    1, 2 and 3
  • b)
    1 and 2
  • c)
    2 and 3
  • d)
    1 and 3
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Consider the following statements: A proportional plus derivative cont...
Proportional plus derivative controller

A proportional plus derivative (PD) controller is a type of controller that combines proportional and derivative control actions. It is often used in control systems to improve the system's response to changes in the input signal.

Statements and their correctness

1. The PD controller has high sensitivity.
This statement is correct. The derivative control action in a PD controller amplifies high-frequency noise in the error signal, which can make the system more sensitive to changes in the input signal.

2. The PD controller increases the stability of the system.
This statement is correct. The derivative control action in a PD controller helps to stabilize the system by damping out oscillations and reducing overshoot.

3. The PD controller improves the steady-state accuracy.
This statement is incorrect. The PD controller does not have any effect on the steady-state accuracy of the system.

Conclusion

In conclusion, the correct statements about a proportional plus derivative controller are that it has high sensitivity and increases the stability of the system. The statement that the PD controller improves the steady-state accuracy is incorrect.
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Consider the following statements: A proportional plus derivative controller1. has high sensitivity2. increases the stability of the system3. improves the steady-state accuracyWhich of these statements are correct ?a)1, 2 and 3b)1 and 2c)2 and 3d)1 and 3Correct answer is option 'B'. Can you explain this answer?
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