RESEARCH PAPERS: Gas Turbines: Controls and Diagnostics

Multivariable Adaptive Control Using Only Input and Output Measurements for Turbojet Engines

[+] Author and Article Information
Jin-Quan Huang, Jian-Guo Sun

Department of Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, People’s Republic of China

J. Eng. Gas Turbines Power 117(2), 314-319 (Apr 01, 1995) (6 pages) doi:10.1115/1.2814096 History: Received March 30, 1994; Online November 19, 2007


Current and future aircraft engines are increasingly relying upon the use of multivariable control approach for meeting advanced performance requirements. A multivariable model reference adaptive control (MRAC) scheme is proposed in this paper. The adaptation law is derived using only input and output (I/O) measurements. Simulation studies are performed for a two-spool turbojet engine. The satisfactory transient responses are obtained at different operating points from idle to maximum dry power within the flight envelope. These show insensitivity of the design to engine power level and flight condition. Simulation results also show high effectiveness of reducing interaction in multivariable systems with significant coupling. Using the multivariable MRAC controller, the engine acceleration time is reduced by about 19 percent in comparison with the conventional engine controller.

Copyright © 1995 by The American Society of Mechanical Engineers
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