Abstract
This paper mentions the recent development of combustion control technology and describes some results on the active combustion control system for suppressing flame instabilities. As for the combustion control technology, there are three typical elements including their coupling effects; thermoacoustic, heat release and fluid dynamics. In this research development of the active combustion control system based on a thermoacoustic control and a flame structure control is carried out experimentally. As the thermoacoustic approach, a feedback control system using a loudspeaker is developed, and furthermore a flame structure control system is also investigated using a secondary injection method. Both results of the thermoacoustic and the flame structure control show a good performance of suppressing the pressure oscillation.
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