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                                       Details van artikel 2 van 15 gevonden artikelen
 
 
  A Model-based Self-tuning Controller forThermoacoustic Instability
 
 
Titel: A Model-based Self-tuning Controller forThermoacoustic Instability
Auteur: Annaswamy, A. M.
Rifai, O. M. El
Fleifil, M.
Hathout, J. P.
Ghoniem, A. F.
Verschenen in: Combustion science and technology
Paginering: Jaargang 135 (1998) nr. 1-6 pagina's 213-240
Jaar: 1998-06-01
Inhoud: Active Control of thermoacoustic instabilities in continuous premixed combustion processes is being increasingly investigated for operating at lean low NOx conditions. Recently, we have developed a model-based approach for active control design which accounts for the underlying acoustics, heat release dynamics, and sensor and actuator dynamics. While this model captures a number of the dominant dynamic features of a premixed laminar combustor, there are a number of uncertainties associated with it as well. In this paper, we study the sensitivity of this model with respect to parametric uncertainties, and the efficacy of a fixed control design for suppressing pressure oscillations. We show that under certain conditions, the fixed controller is inadequate and present a self-tuning controller which is capable of delivering the desired performance in the presence of these uncertainties. The controller proposed is based on a rigorous analytical foundation, and is shown through simulation results to lead to better performance than corresponding fixed controllers. Adaptive algorithms based on the LMS-filter are shown to result in numerical instabilities.
Uitgever: Taylor & Francis
Bronbestand: Elektronische Wetenschappelijke Tijdschriften
 
 

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