Question:
A first order system with a proportional controller exhibits an offset to step input. The offset can be reduced by:
A first order system with a proportional controller exhibits an offset to step input. The offset can be reduced by:
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To eliminate steady-state error (offset), add integral action in the controller.
Updated On: May 26, 2025
- increasing the gain
- adding integral mode
- adding derivative mode
- decreasing the gain
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The Correct Option is B
Solution and Explanation
A proportional controller alone cannot eliminate steady-state error (offset) for a step input. Adding an integral component introduces an accumulating term that forces the error to zero over time, effectively removing the offset.
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