QUESTION 2 = A feedback control loop is used to control the temperature of a process fluid exiting a heat exchanger by m

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Question 2 A Feedback Control Loop Is Used To Control The Temperature Of A Process Fluid Exiting A Heat Exchanger By M 1 (59.29 KiB) Viewed 49 times

QUESTION 2 = A feedback control loop is used to control the temperature of a process fluid exiting a heat exchanger by manipulating the flow rate of cooling water. The transfer functions of the process (GP) and other components of the feedback loop (G m, G v and G c) are given as: Gp = -5/(10s +1), Gm = 1.5/(38 +1), Gy=-0.05/(5s +1), Gc= Kc The process has negative steady state gain, the control valve is a linear air-to-close valve, and a proportional controller with gain K c is used. Use K the direct substitution method to determine the upper limit on the value of K c for stability of the feedback control loop