Abstract: Aiming at the nondeterminacy of the aeroengine model structure and parameters, this paper presents new robust adaptive laws for e-modification scheme using novel Non-Quadratic Lyapunov function(NQLF) for aeroengine. These new laws need no accurate mathematic model of aeroengine and offer better performance represented in a fast response of the output error signal while going to zero with a less number of oscillations. Simulation results show that this controller can make system track the model reference output quite well. It has high adaptivity to the change of aeroengine model parameters and structure.

Key words: aeroengine, model reference adaptive control, e-modification robust adaptive law