Controller design for serial processes

被引:8
作者
Faanes, A [1 ]
Skogestad, S [1 ]
机构
[1] Norwegian Univ Sci & Technol, Dept Chem Engn, N-7491 Trondheim, Norway
关键词
control structure; serial process; multivariable control; feedforward; feedback;
D O I
10.1016/j.jprocont.2004.07.001
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
In this paper, we aim at obtaining insight into how a multivariable feedback controller works, with special attention to serial processes. Serial processes are important in the process industry, and the structure of this process makes it simple to classify the different elements of the multivariable controller. In particular, we focus on the difference between the feedforward and feedback parts of the controller. Feedforward control may improve the performance significantly, but is sensitive to uncertainty, especially at low frequencies. Feedback control is very effective at lower frequencies where high feedback gains are allowed. An example of neutralization of an acid in a series of three tanks is used to illustrate the ideas. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码:259 / 271
页数:13
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