ACTIVE CONTROL OF NONLINEAR PRESSURE OSCILLATIONS IN COMBUSTION-CHAMBERS

被引：41
作者：
FUNG, YT
YANG, V
机构：
[1] Pennsylvania State University, Department of Mechanical Engineering, University Park, PA
来源：
JOURNAL OF PROPULSION AND POWER | 1992年 / 8卷 / 06期
关键词：
D O I：
10.2514/3.11474
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
A theoretical analysis of active control of nonlinear acoustic instabilities in combustion chambers is developed in this article. The formulation starts with a generalized wave equation that describes the dynamic behavior of second-order nonlinear oscillations with distributed feedback actions. Control inputs are provided by the burning of the injected seconday fuel in the chamber, with its instantaneous mass flow rate modulated by a proportional-plus-integral (PI) controller located between the pressure sensor and the fuel injection mechanism. Various nonlinear stability characteristics, including the existence and stability of limit cycles, are studied analytically using the method of time averaging. In addition, an optimization procedure is developed for selecting controller gains.
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页码：1282 / 1289
页数：8
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