Consider the stirred-tank heating system shown in Fig. E. It is desired to control temperature T2 by adjusting the heating rate Q1 (Btu/h) via voltage signal V1 to the . It has been suggested that measurements of T1 and To, as well as T2, could provide improved control of T2.
(a) Briefly describe how such a control system might operate and sketch a schematic diagram. State any assumptions that you make.
(b) Indicate how you would classify your control scheme, for example, feedback, cascade, or feedforward. Briefly justify your answer.
(c) Draw a block diagram for the controlsystem.
