This paper addresses open-loop control strategies that involve a low frequency modulation of the fuel injection for suppression of pressure oscillations in combustion systems. Such a strategy has been em-ployed in a number of recent investigations including [1]-[5]. Using a physically based model, analytical explanations for the effectiveness of such a low pulsing strategy are provided in this paper. Conditions are derived on the frequency and the duty-cycle used in the control strategy that lead to stabilization in the combustor, under ideal and nonideal switching strategies, and in the presence of hysteresis. 1
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Prasanth et al. (2002) studied this question.
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