Tuning of PI controllers with one-way decoupling in 2x2 MIMO systems based on finite frequency response data

被引:22
作者
Gilbert, AF [1 ]
Yousef, A
Natarajan, K
Deighton, S
机构
[1] Lakehead Univ, Dept Chem Engn, Thunder Bay, ON P7B 5E1, Canada
[2] Lakehead Univ, Dept Elect Engn, Thunder Bay, ON P7B 5E1, Canada
关键词
frequency response; MIMO systems; PID tuning; decoupling;
D O I
10.1016/S0959-1524(02)00089-6
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
A method of tuning for PI controllers with one-way lead/lag decoupling tuning is demonstrated for 2x2 input-output systems, based on finite frequency response data. The frequency response estimates are obtained from closed loop tests using an identification technique based on bandpass filters. The open-loop frequency response is calculated and used to tune PI controllers and to fit lead-lag compensators for decoupling by weighted least-squares. Separate optimization of the PI controllers and the lead-lag compensator is preferred. The tuning takes into account violations of desired multivariable robustness criteria. The method is illustrated by application to a paper machine headbox simulation and by experiments in distillation column temperature control. (C) 2003 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:553 / 567
页数:15
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