Wide-Range Robust Control of Combustion Instability

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.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2001
Accession Number
ADP011170

Entities

People

  • Asok Ray
  • Boe-shong Hong
  • Vigor Yang

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Closed Loop Systems
  • Combustion
  • Combustion Chambers
  • Computational Science
  • Control Systems
  • Differential Equations
  • Equations
  • Frequency
  • Fuel Injection
  • Mechanical Engineering
  • Military Aircraft
  • Modal Analysis
  • Propulsion Systems
  • Resonant Frequency
  • Scale Models
  • Steady State
  • Weighting Functions

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Control Systems Engineering.
  • Plasma Physics / Magnetohydrodynamics