The Nyquist plot of a conditionally stable system is shown in Figure P9.4 for a specific
Chapter 0, Problem P9.4(choose chapter or problem)
The Nyquist plot of a conditionally stable system is shown in Figure P9.4 for a specific gain K. (a) Determine s / / / \ l /" \ l\-L' x^ ^ v ^ ^^G,.(j(o)G(j(o \ \ \ \ 0 J FIGURE P9.4 Nyquist plot of conditionally stable system. whether the system is stable, and find the number of roots (if any) in the right-hand s-plane. The system has no poles of Gc(s)G(s) in the right half-plane, (b) Determine whether the system is stable if the - 1 point lies at the dot on the axis.
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