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MISO-structure-based control-relevant identification of MIMO systems with steady-state gain matching

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Title MISO-structure-based control-relevant identification of MIMO systems with steady-state gain matching
 
Creator SHREESHA, C
GUDI, RD
 
Subject distillation-columns
predictive control
feedback-control
control design
siso
 
Description The prefilter-based control-relevant identification (CRI) scheme proposed by Rivera et al. [IEEE Trans. Autom. Control 1992, 37 (7), 964-974] for single-input/single-output (SISO) systems estimates a model of the system that matches the true system dynamics in a range of frequencies that are important and relevant for closed-loop performance. In this paper, an extension of this approach is proposed for the CRI of multi-input/multi-output (MIMO) systems by partitioning the overall system into individual multi-input/single-output (MISO) structures. Furthermore, CRI methodologies proposed hitherto have not examined the issue of accurate identification of the steady-state gain. In this paper, the importance of achieving good steady-state gain match is emphasized, and a method is proposed to identify a control-relevant model that has a good match, at steady state (zero frequency), as well as in the control-relevant frequency band, with the true plant. The effect of the proposed control-relevant prefiltering on the identification of the high- and low-gain directions is also analyzed in this paper. The proposed methodology is validated using simulations on representative problems from the literature and on a paper machine problem.
 
Publisher AMER CHEMICAL SOC
 
Date 2011-07-14T12:01:39Z
2011-12-26T12:48:22Z
2011-12-27T05:34:47Z
2011-07-14T12:01:39Z
2011-12-26T12:48:22Z
2011-12-27T05:34:47Z
2004
 
Type Article
 
Identifier INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 43(10), 2534-2547
0888-5885
http://dx.doi.org/10.1021/ie020767v
http://dspace.library.iitb.ac.in/xmlui/handle/10054/3948
http://hdl.handle.net/10054/3948
 
Language en