Nonlinear steady state control of small turbofan engine based on LMI

Abstract

Abstract: Aiming at the strong nonlinear characteristics of aero-engine, a general nonlinear term is introduced based on its linear state space model to broaden the working range of it. Based on the nonlinear model, a generalized Gronwall-Bellman lemma is applied to design a steady state controller. Then the performance of the controller is verified by applying the Lyapunov stability theorem. DGEN380 engine is taken as simulation object, and the above controller is simulated. Simulation results verify the effectiveness of the current method.

Key words: aero-engine, nonlinear, steady state regulator, generalized Bellman-Granwall lemma, linear matrix inequality

CLC Number:

V233.7

CAO Huiling, ZHENG Lijiu. Nonlinear steady state control of small turbofan engine based on LMI[J]. Journal of Civil Aviation University of China, 2020, 38(3): 12-17.

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