Determine the same parameters as in Problem (9), using the Nyquist method. Problem (9) The ACS of a heat exchanger has the following transfer functions: Using the direct substitution method, show that...

Determine the same parameters as in Problem (9), using the Nyquist method.

Problem (9)

The ACS of a heat exchanger has the following transfer functions:

Using the direct substitution method, show that the limit gain factor of the P controller is K_c
= 12 and the period of oscillation is T_u
= 0.36 min.