Aeroengine Multivariable Nonlinear Tracking Control Based on Uncertainty and Disturbance Estimator

Abstract

The multivariable robust tracking control problem for aeroengine is considered in this paper. On the basis of the aeroengine nonlinear affine uncertain dynamic model, and according to uncertainty and disturbance estimator (UDE) control approach, a novel aeroengine multivariable robust nonlinear tracking control method is presented in order to provide favorable tracking and disturbance rejection performance. After getting a generalization form of UDEbased aeroengine multivariable controller, a simplification form of control law is obtained when a specified form of lowpass filter is applied. Reference model of the aeroengine system should have satisfying dynamic, thus an optional reference model is provided. Simulation on a twinshaft aeroengine with two inputs, verifies the effectiveness of the proposed method.