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Received: 1999-03-12

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Journal of Zhejiang University SCIENCE A 2000 Vol.1 No.2 P.136-143

http://doi.org/10.1631/jzus.2000.0136


MODELING AND ROBUST LQ REGULATOR DESIGNING FOR REFINING PROCESS


Author(s):  XUE An-ke, LU Ying-quan, SUN You-xian

Affiliation(s):  Institute of Industrial Process Control, National Key Lab of Industrial Control Tech.,Yuquan Campus of Zhejiang University, Hangzhou 310027, China

Corresponding email(s): 

Key Words:  Refining process, robust control, optimal control


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XUE An-ke, LU Ying-quan, SUN You-xian. MODELING AND ROBUST LQ REGULATOR DESIGNING FOR REFINING PROCESS[J]. Journal of Zhejiang University Science A, 2000, 1(2): 136-143.

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Abstract: 
This paper presents a synthetic design procedure for a robust LQ regulator for refining process, including modeling and robust optimal system designing. The paper discusses three major topics: mathematical modeling of the process with large uncertainty, determination of a synthetic performance index for optimizing the process, and design of the robust optimal system with robust guaranteed stability. This research result is a part of preliminary results of the real refining process optimal control system implemented in the Minfeng Paper Mill, Zhejiang Province. Simulation test results showed that the proposed modeling and control algorithm are efficient and practicable.

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Reference

[1]Anderson and Moore., 1989. Optimal Control. Englewood Cliffs, NJ, Prentice-Hall.

[2]Douglas, J. and Athans, M., 1994. Robust linear quadratic design with real parameter uncertainty. IEEE Trans. Automat. Contr., 39(1): 107-111.

[3]Lehtomaki, N.A., Sandell, Jr.N.R. And Athans, M., 1981. Robustness results in linear Gaussian based multivariable control designs. IEEE Trans. Automat. Contr., 26(1): 75-92.

[4]Leider, P.J. and Rihs, J.. 1977. Understanding the disk refiner. Part 1: the hydraulic behavior. Tappi, 60(9): 98-102.

[5]Lumianinen, J., 1990. New theory can improve practice. PPI,32(8): 46-54.

[6]Petersen, I.R. and Hollot, C.V., 1986. A Riccati equation approach to the stabilization of uncertain linear systems. Automatica, 22(4): 397-411.

[7]Pi Dao-ying and Sun You-xian, 1993. A mathematical model of refining process. Trans. of China Pulp and Paper, 12(8): 86-91.

[8]Safonov, M. G. and Athans, M., 1977. Gain and phase margin for multiloop LQG regulators. IEEE Trans. Automat. Contr., 22(2): 173-179.

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