Disturbance Modeling and State Estimation for Predictive Control with Different State-Space Process Models

Piotr Tatjewski

Abstract

The paper is conce rned with d isturbance modeling a nd observer design for ModelPredictive Control (MPC) with d ifferent formulations of state-space proce ss models. Systematicdiscuss ion is given, presenting the ways the deterministic disturbance s most important in proce sscontrol app lications s hould be treated in the MPC algorithm, to o btain disturbance att enu ationand offset-free c ontrol. The c losely related p roblem of observer design and understand ing isexplained. It is shown that a simple app roa ch with a proce ss s tate observer only, in the presenceof deterministic disturbance s, can work bett er than the c onventional app roa ch of extend edproce ss -disturbance state e stimation. The observer design is also considered for the c ase ofextend ed velocity form state-space modeling including integrators. A simplified app roa ch withredu ce d order observer is given. The results are illustrated on a 2×2 example proce ss problem.
Author Piotr Tatjewski (FEIT / AK)
Piotr Tatjewski,,
- The Institute of Control and Computation Engineering
Pages5326-5331
Publication size in sheets0.5
Book Proceedings of the 18th IFAC World Congress, IFAC-PapersOnLine, 2011, Elsevier Science Direct, ISBN 978-390266193-7
Keywords in EnglishModel predictive c ontrol, state-space models, disturbance rejec tion, state observers,extend ed state-space modeli
ASJC Classification2207 Control and Systems Engineering
DOIDOI:10.3182/20110828-6-IT-1002.00440
Languageen angielski
Score (nominal)0
Publication indicators Scopus Citations = 4; GS Citations = 3.0; Scopus SNIP (Source Normalised Impact per Paper): 2011 = 0.345
Citation count*3 (2016-07-04)
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