An annular pulsed detonation combustor (PDC) basically consists of a number of detonation tubes which are firing in a predetermined sequence into a common downstream annular plenum. Fluctuating initial conditions and fluctuating environmental parameters strongly affect the detonation. Operating such a setup without misfiring is delicate. Misfiring of individual combustion tubes will significantly lower performance or even stop the engine. Hence, an operation of such an engine requires a misfiring detection. Here, a model-based approach is used which exploits the innovation sequence calculated by a Kalman filter. The model necessary for the Kalman filter is determined based on a modal identification technique. A surrogate, nonreacting experimental setup is considered in order to develop and test these methods.
An Annular Pulsed Detonation Combustor Mockup: System Identification and Misfiring Detection
Contributed by the Controls, Diagnostics and Instrumentation Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received July 15, 2015; final manuscript received August 5, 2015; published online October 13, 2015. Editor: David Wisler.
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Wolff, S., and King, R. (October 13, 2015). "An Annular Pulsed Detonation Combustor Mockup: System Identification and Misfiring Detection." ASME. J. Eng. Gas Turbines Power. April 2016; 138(4): 041603. https://doi.org/10.1115/1.4031320
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