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D&D Inc operations area personnel are experiencing problems with a particular feedback control loop on an interstage cooler. Your supervisor has asked you to assess the situation and report back solutions if any are available. The control loop is exhibiting an undesirable sustained oscillation that the operations group are sure is caused by the feedback loop itself (poor controller tuning). They want assistance in retuning the controller. Your supervisor thinks that the oscillations are caused by external disturbances and wants the operations group personnel to deal with the problem themselves. Suggest a simple procedure that will allow you to determine quickly the cause of the oscillations. How will you explain your logic to your supervisor?

D&D Inc operations area personnel are experiencing problems with a particular feedback control loop on an interstage cooler. Your supervisor has asked you to assess the situation and report back solutions if any are available. The control loop is exhibiting an undesirable sustained oscillation that the operations group are sure is caused by the feedback loop itself (poor controller tuning). They want assistance in retuning the controller. Your supervisor thinks that the oscillations are caused by external disturbances and wants the operations group personnel to deal with the problem themselves. Suggest a simple procedure that will allow you to determine quickly the cause of the oscillations. How will you explain your logic to your supervisor?

Introduction to Chemical Engineering Thermodynamics
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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D&D Inc operations area personnel are experiencing problems with a particular feedback control loop on an interstage cooler. Your supervisor has asked you to assess the situation and report back solutions if any are available. The control loop is exhibiting an undesirable sustained oscillation that the operations group are sure is caused by the feedback loop itself (poor controller tuning). They want assistance in retuning the controller. Your supervisor thinks that the oscillations are caused by external disturbances and wants the operations group personnel to deal with the problem themselves. Suggest a simple procedure that will allow you to determine quickly the cause of the oscillations. How will you explain your logic to your supervisor?
Transcribed Image Text:D&D Inc operations area personnel are experiencing problems with a particular feedback control loop on an interstage cooler. Your supervisor has asked you to assess the situation and report back solutions if any are available. The control loop is exhibiting an undesirable sustained oscillation that the operations group are sure is caused by the feedback loop itself (poor controller tuning). They want assistance in retuning the controller. Your supervisor thinks that the oscillations are caused by external disturbances and wants the operations group personnel to deal with the problem themselves. Suggest a simple procedure that will allow you to determine quickly the cause of the oscillations. How will you explain your logic to your supervisor?
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