Parametric Control of Combustion Thermo-Acoustic Instabilities Authors Al-Masoud, N., & Singh T. Source IEEE Transactions on Control System Technology, 13(6), 1076-1083, 2005. Abstract
In this brief, we present a parametric controller
design for thermo-acoustic combustion instabilities in a propulsion
system. A generalized wave equation describes the dynamic
behavior of second-order nonlinear oscillations. The control
algorithm is developed based on the first two modes using the
time-averaged simplification of the governing coupled nonlinear
system equations. The closed-loop control law design is based on
finding an optimal phase angle such that the heat release produced
by secondary oscillatory fuel injection is out of phase with the
mode's pressure oscillations, and on finding the limits on the
controller gain, to ensure the system stability. These gains are
then optimized using three different performance indices, namely,
integral of the time absolute error (ITAE), integral of the absolute
error (IAE), and finally, integral of square of the error (ISE).
Simulations illustrate that the proposed techniques are able to
effectively attenuate the unwanted oscillations.
@article{Singh05_IEEE, Author = {N. Al-Masoud, T. Singh}, Journal = {IEEE Transactions on Control System Technology}, Month = {November}, Pages = {1076-1083}, Title = {Parametric Control of Combustion Thermo-Acoustic Instabilities}, Volume = {13}, Number = {6}, Year = {2005} } |