December 2002
Intermediate to advanced
800 pages
18h 7m
English
Content preview from Process Control: Modeling, Design, and Simulation
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6.1. Introduction
Consider the standard feedback block diagram shown in Figure 6-1, where disturbance inputs have been neglected. Transfer functions (and block diagrams) are used to analyze the behavior of control systems, because the algebraic expressions are easy to manipulate.
Figure 6-1. Feedback control block diagram.
We noted in Chapter 5 that the closed-loop transfer function could be used to determine, for example, the range of controller gains that assure closed-loop stability.
PID Controller Forms
PID controller algorithms were developed in Chapter 5. Here we provide a concise review of the algorithms in common use.
P-Only Control
The ...
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