Consider the control problem of Exercise 14.10 and a PI controller with Kc = 5 and 1

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Consider the control problem of Exercise 14.10 and a PI controller with Kc = 5 and τ1 = 0.3mm.
(a) Plot the Nyquist diagram for the open-loop system.
(b) Determine the gain margin from the Nyquist plot.
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Process Dynamics And Control

ISBN: 978-0471000778

2nd Edition

Authors: Dale E. Seborg, Thomas F. Edgar, Duncan A. Mellich

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