Using the Nyquist criterion, find the range of K for stability for each of the systems in
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Using the Nyquist criterion, find the range of K for stability for each of the systems in Figure P10.4.
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R(s) + K C(s) (s + 2) (s + 4)(s + 6) System 1 R(s) + K(s2 – 4s + 13) C(s) (s + 2)(s + 4) System 2 K(s – 1) (s+ 1) R(s) + C(s) (s- 2) (s+ 2) System 3 FIGURE P10.4
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