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Process Control and Instrumentation
Find the ultimate gain and frequency for a proportional controller in the case of a process having the transfer function Gp(s) = 1/(4s + 1)(2s + 1)(s + 1).
w = 1/14, Kc = 45/714
w = 7/6, Kc = 46/3
w = 1, Kc = 13
w = 7/8, Kc = 45/4
Correct Answer:
w = 7/6, Kc = 46/3
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