Nonlinear feedback control of self-sustained thermoacoustic oscillations

被引：34

作者：

Rubio-Hervas, Jaime ^{[1
]}

Zhao, Dan ^{[1
]}

Reyhanoglu, Mahmut ^{[2
]}

机构：

[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

[2] Embry Riddle Aeronaut Univ, Dept Phys Sci, Daytona Beach, FL 32114 USA

来源：

AEROSPACE SCIENCE AND TECHNOLOGY | 2015年 / 41卷

关键词：

Combustion instability; Thermoacoustic oscillation; Transient acoustics growth; Nonlinear control; COMBUSTION INSTABILITY; TRANSIENT GROWTH; PASSIVE CONTROL; ACTIVE CONTROL; MODEL; DYNAMICS;

D O I：

10.1016/j.ast.2014.12.026

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Acoustic disturbances could undergo transient growth to trigger thermoacoustic instability in a combustion system with non-orthogonal eigenmodes, even with stable eigenvalues and in the presence of conventional linear controllers. In this work, nonlinear feedback control of thermoacoustic oscillations in a Rijke-type combustion system is considered. A thermoacoustic model with distributed monopole-like actuators is presented. To stabilize the thermoacoustic system, a nonlinear feedback controller is developed. It is shown that the feedback controller achieves both exponential decay of the flow disturbance energy and unity maximum transient growth. The performance of the controller is illustrated with two systems: one associated with one mode and one actuator, and the other with two modes and two actuators. The successful demonstration indicates that the developed nonlinear controller has the potential to be applied to combustion systems with multiple modes. (C) 2015 Elsevier Masson SAS. All rights reserved.

引用

页码：209 / 215

页数：7

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