Control System Design - McMaster University

ELEC ENG 4CL4: Control System DesignNotes for Lecture #2 Wednesday, January 7, 2004Dr. Ian C. BruceRoom: CRL-229 Phone ext.: 26984 Email: Graebe, Salgado , Prentice Hall 2000 Chapter 2 Chapter 2 Introduction to the Principlesof FeedbackTopics to be covered include: An industrial motivational example; A statement of the fundamental nature of the Control problem; The idea of inversion as the central ingredient in solvingcontrol problems; Evolution from open loop inversion to closed loop , Graebe, Salgado , Prentice Hall 2000 Chapter 2We will see that feedback is a key tool that can beused to modify the behaviour of a behaviour altering effect of feedback is a keymechanism that Control engineers exploitdeliberately to achieve the objective of acting on asystem to ensure that the desired performancespecifications are , Graebe, Salgado , Prentice Hall 2000 Chapter 2A motivating industrial exampleWe first present a simplified, yet essentiallyauthentic, example of an industrial Control example, taken from the steel industry, is of aparticular nature, however the principal elements ofspecifying a desired behaviour, modeling and thenecessity for trade-off decisions are , Graebe, Salgado , Prentice Hall 2000 Chapter 2 Photograph of Bloom Caster Goodwin, Graebe, Salgado , Prentice Hall 2000 Chapter 2 Process schematic of an Industrial Bloom Caster Goodwin, Graebe, Salgado.

Chapter 2 Goodwin, Graebe, Salgado©, Prentice Hall 2000 Modeling To make progress on the control system design problem, it is first necessary to gain an understanding of how the process operates.

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