On-line Identification Approach for Adaptive Control of Combustion Instabilities PDF Download
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Author: Clifford E. Johnson
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Languages : en
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Author: Clifford E. Johnson
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Languages : en
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Author: Anil Gulati
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Category : Combustion engineering
Languages : en
Pages : 0
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781721527069
Category :
Languages : en
Pages : 30
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An adaptive control algorithm has been developed for the suppression of combustion thermo-acoustic instabilities. This technique involves modulating the fuel flow in the combustor with a control phase that continuously slides within the stable phase region, in a back and forth motion. The control method is referred to as Adaptive Sliding Phasor Averaged Control (ASPAC). The control method is evaluated against a simplified simulation of the combustion instability. Plans are to validate the control approach against a more physics-based model and an actual experimental combustor rig. Kopasakis, George and DeLaat, John C. Glenn Research Center NASA/TM-2002-211805, NAS 1.15:211805, E-13500, AIAA Paper 2002-4075
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781721591268
Category :
Languages : en
Pages : 30
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This effort extends into high frequency (>500 Hz), an earlier developed adaptive control algorithm for the suppression of thermo-acoustic instabilities in a liquidfueled combustor. The earlier work covered the development of a controls algorithm for the suppression of a low frequency (280 Hz) combustion instability based on simulations, with no hardware testing involved. The work described here includes changes to the simulation and controller design necessary to control the high frequency instability, augmentations to the control algorithm to improve its performance, and finally hardware testing and results with an experimental combustor rig developed for the high frequency case. The Adaptive Sliding Phasor Averaged Control (ASPAC) algorithm modulates the fuel flow in the combustor with a control phase that continuously slides back and forth within the phase region that reduces the amplitude of the instability. The results demonstrate the power of the method - that it can identify and suppress the instability even when the instability amplitude is buried in the noise of the combustor pressure. The successful testing of the ASPAC approach helped complete an important NASA milestone to demonstrate advanced technologies for low-emission combustors. Kopasakis, George Glenn Research Center NASA/TM-2003-212535, E-14099, NAS 1.15:212535, AIAA Paper 2003-4491
Author: KoHse-HoingHaus
Publisher: Taylor & Francis US
ISBN: 9781560329381
Category : Technology & Engineering
Languages : en
Pages : 748
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The editors have assembled a world-class group of contributors who address the questions the combustion diagnostic community faces. They are chemists who identify the species to be measured and the interfering substances that may be present; physicists, who push the limits of laser spectroscopy and laser devices and who conceive suitable measurement schemes; and engineers, who know combustion systems and processes. This book assists in providing guidance for the planning of combustion experiments, in judging research strategies and in conceiving new ideas for combustion research. It provides a snapshot of the available diagnostic methods and thier typical applications from the perspective of leading experts in the field.
Author: Petros Koumoutsakos
Publisher: Springer
ISBN: 3540360859
Category : Technology & Engineering
Languages : en
Pages : 239
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This monograph presents the state of the art of theory and applications in fluid flow control, assembling contributions by leading experts in the field. The book covers a wide range of recent topics including vortex based control algorithms, incompressible turbulent boundary layers, aerodynamic flow control, control of mixing and reactive flow processes or nonlinear modeling and control of combustion dynamics.
Author: Shozo Koshigoe
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Languages : en
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Category : Mechanical engineering
Languages : en
Pages : 452
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Category : Airplanes
Languages : en
Pages : 572
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Author: C. E. Johnson
Publisher:
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Category :
Languages : en
Pages :
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