著者

関 宏也 大山 敏 小河 守正

出版者

The Society of Instrument and Control Engineers

雑誌

計測自動制御学会論文集 (ISSN:04534654)

巻号頁・発行日

vol.38, no.1, pp.61-66, 2002-01-31 (Released:2009-03-27)

参考文献数

15

被引用文献数

1 2

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A nonlinear model predictive control based on successive linearization approach is developed. A nonlinear process model is linearized along its trajectory and an infinite-time horizon linear optimal regulator with integrator is implemented in a receding horizon fashion. Simulation examples for highly nonlinear chemical reactors which exhibit static input or output multiplicities are given to demonstrate the capability of the controller. The developed control algorithm has been successfully applied to a grade transition operation in an industrial polymerization reactor.

著者

関 宏也 天野 壮一 江本 源一

出版者

公益社団法人 計測自動制御学会

雑誌

計測自動制御学会論文集 (ISSN:04534654)

巻号頁・発行日

vol.47, no.9, pp.374-379, 2011 (Released:2012-01-21)

参考文献数

8

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An initial design of an advanced control system for an industrial crystallizer train is addressed. The target process is a part of para-xylene production process, and it consists of five scraped surface crystallizers, two centrifugal separators, and two hydrocyclones. An operation policy is derived by solving a constrained nonlinear optimization problem on the basis of a nonlinear process model. Multiloop and multivariable control systems are designed to realize the derived operation policy and their performances are compared through simulation studies. The process is found to be highly interacting and constraint switching is likely to occur under operation condition changes, so that application of constrained multivariable model predictive control may be well justified. The procedures demonstrated in this study will help perform a feasible study for unconventional applications of advanced control technology.