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Control SystemsControllers

The transfer function of an ideal PID controller is?

  • AKp+Ki/s+Kd s
  • BKp s+Ki+Kd/s²
  • CKp/(s+1) only
  • DKi s only
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Correct Answer: A. Kp+Ki/s+Kd s
Explanation: An ideal PID controller combines proportional, integral and derivative actions: Gc(s)=Kp+Ki/s+Kd s.
Reference: Standard control systems: controllers
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