A feedback control loop is used to control the temperature of a process fluid exiting a heat exchanger by manipulating t

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A Feedback Control Loop Is Used To Control The Temperature Of A Process Fluid Exiting A Heat Exchanger By Manipulating T 1 (14.45 KiB) Viewed 58 times

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 (p) and other components of the feedback loop (Gm Gv and G c) are given as: Gp = -5/(10s +1). Gm = 1.5/3s +1), Gy=-0.05/(5s +1), Gorka The process has negative steady state gain, the control valve is a linear air-to-close valve, and a proportional controller with gain ke is used. Use the direct substitution method to determine the upper limit on the value of K for stability of the feedback control loop