Overshoot

What is Overshoot?

The amount by which a system's response peaks above its final steady-state value before settling back down, usually reported as a percentage of that final value. It's closely tied to damping ratio — an underdamped system overshoots noticeably, and pushing controller gain higher tends to make the overshoot grow further still.

The five clues

Engineerdle #43 described Overshoot with five clues, revealed one at a time from hardest to most direct. Each clue points at a different property of the concept.

1. 01A step response's tendency to go too far before coming back.
2. 02It's reported as a percentage above the final steady-state value.
3. 03A more heavily damped system shows less of it, or none at all.
4. 04Push a controller's gain too high and it tends to grow.
5. 05The amount by which a system's step response exceeds its final steady-state value before settling.

More Control Systems concepts

• Ziegler-Nichols MethodPuzzle #48
• Phase MarginPuzzle #38
• Laplace TransformPuzzle #33