NDLI: Two-phase dual-type optimising control algorithm for uncertain plants with active output constraints

Content Provider	IEEE Xplore Digital Library
Author	Tatjewski, P.
Copyright Year	1999
Description	Author affiliation: Inst. of Control & Comput. Eng., Warsaw Univ. of Technol., Warsaw, Poland (Tatjewski, P.)
Abstract	An algorithm for steady-state optimising control of technological processes within a multilayer control structure is considered in the paper, applicable to the situation when only an approximate and rather rough steady-state process model is available and disturbance estimates are uncertain. It is known that in such cases a single process model optimisation can lead only to very suboptimal results. The algorithm performs iterative set-point optimisation (improvement) using the model and process measurement information to cope with the uncertainty. It belongs to the ISOPE class (Integrated System Optimisation and Parameter Estimation). Further, a case with active constraints on process outputs vital for economical efficiency is considered, with an additional dedicated feedback correction controller used to keep the constraints satisfied. A two-phase dual-type ISOPE algorithm derived for the considered control structure is presented in the paper. It removes the major drawback of the available dual algorithm - inefficiency of the initial phase. Simulation results on a case study example of distillation columns in series are presented, for both new and previous algorithms.
Starting Page	1015
Ending Page	1020
File Size	273727
Page Count	6
File Format	PDF
ISBN	9783952417355
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-08-31
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	EUCA
Subject Keyword	Adaptation models Constraints Feedback Process control Set-point optimisation Approximation algorithms Nonhomogeneous media Multilayer control Steady-state Iterative methods Optimization
Content Type	Text
Resource Type	Article

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