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Unformatted text preview: ω ) of the open-loop gain, G ( s ) H ( s ), of a single-loop feedback control system is shown. The open-loop gain is of the following form ) 25 8 ( ) ( ) ( ) ( 2 2 + + = s s s s N k s H s G , where N ( s ) is a polynomial of degree less than 4. Complete the Nyquist Diagram for all ω and use the Nyquist Criterion to determine the range of k in which the closed-loop system is stable. GH-plane 0 ω→ ∞ 2.5k ω →0...
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- Fall '09
- #, 0 2k, 0 4k, 0 2.5k