Improved constrained cascade control for parallel processes

被引：21

作者：

Lestage, R ^{[1
]}

Pomerleau, A ^{[1
]}

Desbiens, A ^{[1
]}

机构：

[1] Univ Laval, Dept Genie Elect & Genie Informat, Grp Rech Applicat Informat Ind Minerale, St Foy, PQ G1K 7P4, Canada

来源：

CONTROL ENGINEERING PRACTICE | 1999年 / 7卷 / 08期

关键词：

cascade control; constraints; decoupling; saturation;

D O I：

10.1016/S0967-0661(99)00049-0

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper addresses, first, the problem of constraint handling for a system with one input and multiple outputs, where one output must reach a given set point and the other outputs must lie between lower and an upper limits. Three algebraic solutions based on cascade control are outlined. One method employs the traditional cascade controllers, applied to serial transfer functions. The second uses cascade controllers applied to parallel transfer function processes. The latter method shows sensitivity to disturbance and tuning of inner loops. A third innovative method, called a pseudo-cascade controller, is introduced for parallel transfer functions. The new method allows independent tuning of the controllers, and requires no special anti-reset windup feature. An extension is also given for decoupled two-input processes. A simulated example and a distributed control design for an industrial application are given to illustrate the proposed methods. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：969 / 974

页数：6

共 6 条

[1]

[Anonymous], 1984, DISTILLATION CONTROL

[2] Multivariable cascade control for processes with output constraints [J].