Nonlinear Control of A High-Performance Aircraft Engine

P.K. Menon, G. D. Sweriduk, S. S. Vaddi & Khary I. Parker



Direct design of nonlinear control systems from the real-time simulation model of an
aircraft engine is discussed. The benefits of the design approach are that it permits rapid
prototyping, and leverages all the investments made in the engine model development into
better control system designs. Nonlinear control system design using a component level
simulation model of a high-pressure ratio, dual spool, low bypass, variable cycle, militarytype
engine is presented. Numerical design methods are used to automatically generate
controller C-code. Command tracking and mode blending between low and high-power
operations are illustrated. Monte-Carlo simulations are carried out to investigate the
robustness of nonlinear engine control systems with respect to parameter variations.
Robustness comparisons are given with a previous gain scheduled linear control law.


Reference: Menon, P. K., Sweriduk, G. D.,  Vaddi, S. S. & Parker, K. K. (2006 August 21-24). Nonlinear Control of A High-Performance Aircraft Engine. 2006 AIAA Guidance, Navigation, and Control Conference, August 21-24, Keystone, CO.  doi: 10.2514/6.2006-6087 © Copyright 2006 by Optimal Synthesis Inc. All Rights Reserved. Reproduced with permission.

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