Control Configured Combustors: A Systems Framework for Active Control of Combustion Dynamics

我们建议研究主动控制燃烧动力学，特别强调热声不稳定性的抑制。我们的方法是开发一个系统框架，该框架将包括(a)导致不稳定性的不同组件的模型，例如，热释放动力学，声学动力学，致动器-传感器动力学，(b)主动反馈控制对这些组件及其相互作用的影响，以及(c)自调谐算法作为控制设计的一部分，以允许过程操作条件的变化。每个子部件模型将以与实际系统兼容的复杂性增加的顺序进行研究，例如，虚张声势体稳定燃烧的热释放动态模型，剪切层中的涡状结构，用作执行器的燃油喷射器等。我们将重点展示，使用一个系统框架，一个整体控制燃烧室模型是如何用这些组件模型合成的，能够描述在实际系统中观察到的微妙的动态行为。将特别关注基于模型的控制策略的理解，这些控制策略基于使用这些模型的燃烧系统的预测响应，并且考虑了以前未理解的影响，例如声学模式之间的耦合以及不同控制器组件与燃烧器之间的耦合。＊＊＊

9713415AnnaswamyWe propose to study active control combustion dynamics, with particular emphasis on suppression of thermoacoustic instability. Our approach is to develop a systems framework which will include (a) models for the different components which contribute to the instability, e.g., the heat release dynamics, the acoustic dynamics, the actuator-sensor dynamics, (b) the effect of active feedback control on these components and their mutual interactions, and (c) self-tuning algorithms as part of the control design to allow changes in the operating conditions of the process. Each subcomponent model will be studied in increasing order of complexities which are compatible with practical systems, e.g., heat release dynamic models for bluff body-stabilized combustion, in vortical structures in shear layers, from fuel injectors used as actuators, etc. We will focus on showing, using a systems framework, how an overall controlled combustor model which is synthesized using these component models is capable of describing the subtle dynamic behavior observed in practical systems. Particular attention will be given to an understanding of model-based control strategies that are based on the predicted response of the combustion systems using these models and that account for effects not previously understood, such as coupling among acoustic modes and coupling among different controller components and the combustor. ***