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What is the integral action in a PID controller responsible for?

Practice Questions

Q1
What is the integral action in a PID controller responsible for?
  1. Eliminating steady-state error
  2. Improving transient response
  3. Increasing system stability
  4. Decreasing overshoot

Questions & Step-by-Step Solutions

What is the integral action in a PID controller responsible for?
  • Step 1: Understand what a PID controller is. It is a control system that uses three actions: Proportional, Integral, and Derivative.
  • Step 2: Focus on the integral action. This part of the controller looks at the error over time.
  • Step 3: The error is the difference between the desired value and the actual value.
  • Step 4: The integral action adds up all the past errors. This means it keeps a running total of how much error has occurred.
  • Step 5: By accumulating the error, the integral action helps to correct any persistent error that doesn't go away on its own.
  • Step 6: This process helps eliminate steady-state error, which is when the system settles at a value that is not the desired value.
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