Practice Nyquist Plot (4.5.3) - Analyze Systems Using Block Diagrams in Both Time and Frequency Domains

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6 sample questions

Question 1.
What is a Nyquist plot used for?
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Think about analyzing a control system.
Question 2.
What does the Nyquist criterion help us determine?
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Focus on pole positions!
3Question 3.
What does a Nyquist plot graphically represent?
- System time response
- System frequency response
- System error response
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Think about the domain in which the plot operates.
4Question 4.
True or False: Nyquist plots are only applicable to linear systems.
- True
- False
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Consider the general applicability of Nyquist plots.
Question 5.
Given the transfer function G(s) = 5/(s^2 + 3s + 2), sketch the Nyquist plot and describe the stability of the system.
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Consider how the poles are positioned in relation to the Nyquist plot.
Question 6.
Explain how the Nyquist plot would change if the feedback gain of a system was increased?
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Think about the effects of feedback gain on pole distribution.

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