Physics · Control Systems
In order to satisfy the Nyquist stability criterion for a closed-loop system, the open-loop poles in the right-half of the s-plane must equal the number of counter-clockwise encirclements of the point (-1, j0). Where must the closed-loop poles (roots/zeroes of characteristic equation) lie for stability?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Right-half of the s-plane
- 2Anywhere in the s-plane
- 3Left-half of the s-plane✓
- 4On the imaginary axis of the s-plane
Correct answer
Left-half of the s-plane
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