For many chemical and biological processes, thesteady-state gain changes when a process operating conditionsuch as throughput changes. Consider a biomedical applica-tion where a drug flow rate is used to control blood pressure.The steady-state gainKvaries with the manipulated variableuaccording to the relation K=a+b/u.whereu>0anda and bare constants that have been deter-mined by fitting steady-state data. Suggest a modification forthe standard PID controller to account for this variation in theprocess gain. Justify your answer. Assume that the time con-stant and time delay do not change with flow rate
For many chemical and biological processes, thesteady-state gain changes when a process operating conditionsuch as throughput changes. Consider a biomedical applica-tion where a drug flow rate is used to control blood pressure.The steady-state gainKvaries with the manipulated variableuaccording to the relation K=a+b/u.whereu>0anda and bare constants that have been deter-mined by fitting steady-state data. Suggest a modification forthe standard PID controller to account for this variation in theprocess gain. Justify your answer. Assume that the time con-stant and time delay do not change with flow rate
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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For many chemical and biological processes, thesteady-state gain changes when a process operating conditionsuch as throughput changes. Consider a biomedical applica-tion where a drug flow rate is used to control blood pressure.The steady-state gainKvaries with the manipulated variableuaccording to the relation K=a+b/u.whereu>0anda and bare constants that have been deter-mined by fitting steady-state data. Suggest a modification forthe standard PID controller to account for this variation in theprocess gain. Justify your answer. Assume that the time con-stant and time delay do not change with flow rate
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