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2 cards from this section. Quick, good the night before a test.
What does the Nyquist plot visualize?
Think about how the system responds across different frequencies.
What happens if the Nyquist plot does not encircle -1?
Consider the implications of having no encirclements.
What indicates a stable system in a Nyquist plot?
Recall the conditions for stability.
True or False: A Nyquist plot that circles -1 counter-clockwise indicates instability.
Consider the relationship between circling directions and stability.
If G(s) = 5/(s^2 + 2s + 5), calculate G(jω). Plot the Nyquist plot and determine the system's stability.
Look carefully at how ω affects the plot shape.
Analyze G(s) = 3/(s^3 + 3s^2 + 3s + 1) by constructing its Nyquist plot. Explore how varying K affects stability.
Consider the relationship between K and encirclements around -1.
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