Consider a heat-exchanger control loop with no dead time. It is controlled by a PD controller. The rate time is 0.25 min. A real PD controller is used with filtering where a = 0.1.
The heat exchanger control loop has the following transfer function (time constants in seconds)
Determine the maximum gain of the system Kcu. What are the corresponding GM & PM if we set Kc = Kcu/1.7.