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4 (a) Based on the block diagram for a control system (Figure Q4(a) below) determine the...


4 (a) Based on the block diagram for a control system (Figure Q4(a) below) determine the transfer function between the error and the set point, E(s)/R(s) (8 marks) R(s)+ c(p) m(s) Figure Q4(a) Figure Q4(b) below shows two different control strategies for a continuous stirred tank reactor (CSTR). The reaction A → B is exothermic and the heat generated is removed by the coolant flowing through the jacket. It is assumed the flowrate of the reactor feed is fixed. Two anticipated disturbances to the system are coolant and feed inlet temperatures, Te and T (b) 4 marks] (i) Draw the block diagram for both control strategies. (i) Discuss briefly how the two control systems deal with To and compare their performance. [4 marks (ii) Discuss briefly how the two systems deal with the disturbance T, and compare their performance. [4 marks] Feed, F, T, Feed, F, T, Coolant Ts out Coolant m out TC SP TC TC A--Bİ|Product Product Te T. Coolant irn Coolant in Feedback Cascade Figure Q4(b)
4 (a) Based on the block diagram for a control system (Figure Q4(a) below) determine the transfer function between the error and the set point, E(s)/R(s) (8 marks) R(s)+ c(p) m(s) Figure Q4(a) Figure Q4(b) below shows two different control strategies for a continuous stirred tank reactor (CSTR). The reaction A → B is exothermic and the heat generated is removed by the coolant flowing through the jacket. It is assumed the flowrate of the reactor feed is fixed. Two anticipated disturbances to the system are coolant and feed inlet temperatures, Te and T (b) 4 marks] (i) Draw the block diagram for both control strategies. (i) Discuss briefly how the two control systems deal with To and compare their performance. [4 marks (ii) Discuss briefly how the two systems deal with the disturbance T, and compare their performance. [4 marks] Feed, F, T, Feed, F, T, Coolant Ts out Coolant m out TC SP TC TC A--Bİ|Product Product Te T. Coolant irn Coolant in Feedback Cascade Figure Q4(b)
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((n)-m(n) 北(n) (1M CA 14ち6,4 Cy

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