Accession Number:

ADP011170

Title:

Wide-Range Robust Control of Combustion Instability

Descriptive Note:

Corporate Author:

PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF MECHANICAL ENGINEERING

Personal Author(s):

Report Date:

2001-06-01

Pagination or Media Count:

14.0

Abstract:

This paper presents the concept and design of a two-layer robust control system for suppression of combustion instabilities over a wide range of operation. The control law synthesis based on a multiple-time-scale model of combustion dynamics. Control actions on the fast-time scale are provided by secondary fuel injection realized as modulation of the primary fuel flow and are gain-scheduled according to the variations of mean-flow temperature and velocity on the slow-time scale. A linear parameter varying LPV L2 -gain control law is formulated in the setting of differential generic theory. Simulation experiments have been conducted to evaluate the control law under wide-range operation of a generic combustor in terms of the trade-off among i fuel injection rate and pressure oscillation ii transient and steady responses and iii stability robustness and performance.

Subject Categories:

  • Hydraulic and Pneumatic Equipment
  • Combustion and Ignition
  • Fuels

Distribution Statement:

APPROVED FOR PUBLIC RELEASE