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Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received May 21, 2001
Accepted June 22, 2001

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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A Tuning of the Nonlinear PI Controller and Its Experimental Application

Doe Gyoon Koo Jietae Lee Dong Kwon Lee¹ Chonghun Han¹ Lyu Sung Gyu² Jae Hak Jung^2† Moonyong Lee²

Dept. of Chem. Eng., Kyungpook National University, Daegu 701-702, Korea ¹Dept. of Chem. Eng., Pohang Univ. of Sci. and Tech, San 31 Hyoja, Pohang 790-784, Korea ²School of Chem. Eng. and Tech., Yeungnam Univ., 214-1 Dae-dong, Kyongsan 712-749, Korea

Korean Journal of Chemical Engineering, July 2001, 18(4), 451-455(5), 10.1007/BF02698289

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Abstract

Many industrial chemical process control systems consist of conventional PID and nonlinear controllers, even though many advanced control strategies have been proposed. In addition, nonlinear control methods are widely used even for linear processes to achieve better control perfrormance compared with linear PID controllers. However, there are few tuning methods for these nonlinear controllers. In this work, we suggest new controller tuning methods for the error square type of nonlinear PI controller. These control methods can be applied to a large number of linear and nonlinear processes without changing control structures. We also propose new tuning rules for integrating processes. In addition, we suggest application guidelines for performing the proposed tuning rules at the pilot scale multistage level control system. Finally, in this work we confirmed good control performances of the proposed tuning methods through both simulation studies and experimental studies.

Keywords

Nonlinear PI Controller PID Controller Error Square Controller Tuning Experimental Application ITAE Tuning Criteria

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