Robust feedback control of thermoacoustic oscillations

Abstract eng:
This study investigates the feedback control of nonlinear thermoacoustic oscillations. A particular aim is to investigate the efficacy of feedback control when the system’s nonlinear dynamics are rich. Specifically, we investigate a flame model which exhibits significant changes in both the gain and the phase of its response to harmonic fluctuations. The flame is modelled by the kinematic G-equation. We model the experimental geometry of Balachandran et al. [1], accounting for a spatially non-uniform flow field, curvature corrections on the flame speed and equivalence ratio fluctuations at the injection point. Robust control techniques are used to design a controller which is then applied to both the linear and fully nonlinear system.

• Export as: BibTeX | MARC | MARCXML | DC | EndNote | NLM | RefWorks
• Add to your basket