| 1. | This would cause poor transient response in the control loop due to low phase margin.
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| 2. | Loop parameters commonly examined for this are the loop's gain margin and phase margin.
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| 3. | Another equivalent measure of proximity to instability is the "'phase margin " '.
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| 4. | Figures 8 and 9 illustrate the gain margin and phase margin for a different amount of feedback ?.
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| 5. | The recurrence may be in the form of a varying voltage or a varying gain or phase margins.
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| 6. | Tools include the root locus, the Nyquist stability criterion, the Bode plot, the gain margin and phase margin.
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| 7. | Phase margin indicates relative stability, the tendency to oscillate during its damped response to an input change such as a step function.
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| 8. | In a controls sense, the oscillation is the result of reduced phase margin induced by the lag of the pilot's response.
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| 9. | Phase margin and its important companion concept, gain margin, are measures of stability in closed-loop, dynamic-control systems.
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| 10. | While phase margin comes from the phase where the loop gain equals one, the gain margin is based upon the gain where the phase equals-180 degrees.
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