Wide-range robust control of Combustion instability

Boe Shong Hong, Asok Ray, Vigor Yang

Research output: Contribution to conferencePaperpeer-review

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 is synthesized 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. The robust control law is formulated based on the concept of linear parameter varying (LPV) L2 -gain in the setting of differential game 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.

Original languageEnglish
DOIs
Publication statusPublished - 2000
Event38th Aerospace Sciences Meeting and Exhibit 2000 - Reno, NV, United States
Duration: 2000 Jan 102000 Jan 13

Other

Other38th Aerospace Sciences Meeting and Exhibit 2000
CountryUnited States
CityReno, NV
Period00-01-1000-01-13

All Science Journal Classification (ASJC) codes

  • Space and Planetary Science
  • Aerospace Engineering

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