(11 Marks) Consider the composition conventional feedback control system (physical process) shown in figure (1) in which a concentrated stream of control reagent containing water and solute is used to control the concentration of the stream leaving a two-tank system (Tank 1 and Tank 2 are identical). The stream to be processed passes through a preconditioning stirred tank where composition fluctuations are smoothed out before the outlet stream is mixed with control reagent. 1. Draw the control system block diagram with feedforward (GH(s)) and feedback controllers. Make use of the following: R = set point or desired value. Transfer function of preconditioning tank = Transfer function of Tank 1 = 65+1 5+1 Transfer function of PI controller = Kc(1++) (7 Marks) 2- What are the advantages of using the feedforward and feedback control together. (4 Marks) 1 Control Reagent PI Conroller Control Valve Preconditioning Tank Tank 1 Tank 2 Figure (1) (11 Marks) Consider the composition conventional feedback control system (physical process) shown in figure (1) in which a concentrated stream of control reagent containing water and solute is used to control the concentration of the stream leaving a two-tank system (Tank 1 and Tank 2 are identical). The stream to be processed passes through a preconditioning stirred tank where composition fluctuations are smoothed out before the outlet stream is mixed with control reagent. 1. Draw the control system block diagram with feedforward (GH(s)) and feedback controllers. Make use of the following: R = set point or desired value. Transfer function of preconditioning tank = Transfer function of Tank 1 = 65+1 5+1 Transfer function of PI controller = Kc(1++) (7 Marks) 2- What are the advantages of using the feedforward and feedback control together. (4 Marks) 1 Control Reagent PI Conroller Control Valve Preconditioning Tank Tank 1 Tank 2 Figure (1)