Chemical Engineering > GATE 2024 > Process Control
A PD controller with transfer function Gc is used to stabilize an open-loop unstable process with transfer function Gp, where
Gc = Kc [(τDs + 1) / ((τD/20)s + 1)], Gp = 1 / [(s − 1)(10s + 1)]
and time is in minutes. From the necessary conditions for closed-loop stability, the maximum feasible value of τD, in minutes, rounded off to 1 decimal place, is _________
Gc = Kc [(τDs + 1) / ((τD/20)s + 1)], Gp = 1 / [(s − 1)(10s + 1)]
and time is in minutes. From the necessary conditions for closed-loop stability, the maximum feasible value of τD, in minutes, rounded off to 1 decimal place, is _________
Correct : 0.67
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