Suppose that the gain, time constant and dead time of a process with the following transfer function: Gc(s) = 10 exp( – 0.1s)/(0.5s + 1) are known with a possible error of ± 20% of their values. The largest permissible gain Kc of a proportional controller needs to be calculated below taking the values of process gain, time constant and dead time as________________?

Question

Accepted Answer

12, 0.6, 0.12. The problem asks for the values of process gain (K), time constant (tau), and dead time (L) that should be used. Based on the structure of the options and typical control problems, option B provides a consistent set of calculated or assumed values.