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Unformatted text preview: 1 28150. Introduction to proces control 5. First-order systems Krist V. Gernaey 21 September 2009 28150 Learning objectives • At the end of this lesson you should be able to: – Explain the response of first-order systems to standard inputs 21 September 2009 28150 Outline • Standard process inputs • Response of first-order processes 21 September 2009 28150 Outline • Standard process inputs • Response of first-order processes 21 September 2009 28150 Process inputs • Previously, 2 types of process inputs were distinguished: – Manipulated variables = inputs that can be manipulated to control a process – Disturbance variables = inputs that cannot be manipulated • How does a process respond to changes in the inputs? 21 September 2009 28150 Definitions • Output and input: terminology has been used for process models until now • From now on!: – Output = controlled variable in a process (set point) – Input = any variable that influences the output • Disturbance • Manipulated variable • Knowledge about how outputs respond to changes in inputs is essential when analyzing process dynamics and developing control systems...
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This note was uploaded on 11/20/2009 for the course CHME DTU-abroad taught by Professor Rafiqulgani during the Fall '09 term at Rensselaer Polytechnic Institute.
- Fall '09