Aircraft control using nonlinear dynamic inversion in conjunction with adaptive robust control

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Title: Aircraft control using nonlinear dynamic inversion in conjunction with adaptive robust control
Author: Fisher, James Robert
Abstract: This thesis describes the implementation of Yao ?s adaptive robust control to an aircraft control system . This control law is implemented as a means to maintain stability and tracking performance of the aircraft in the face of failures and changing aerodynamic response . The control methodology is implemented as an outer loop controller to an aircraft under nonlinear dynamic inversion control . The adaptive robust control methodology combines the robustness of sliding mode control to all types of uncertainty with the ability of adaptive control to remove steady state errors . A performance measure is developed in to reflect more subjective qualities a pilot would look for while flying an aircraft . Using this measure , comparisons of the adaptive robust control technique with the sliding mode and adaptive control methodologies are made for various failure conditions . Each control methodology is implemented on a full envelope , high fidelity simulation of the F -15 IFCS aircraft as well as on a lower fidelity full envelope F -5A simulation . Adaptive robust control is found to exhibit the best performance in terms of the introduced measure for several different failure types and amplitudes .
URI: http : / /hdl .handle .net /1969 .1 /1515
Date: 2005-02-17

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Aircraft control using nonlinear dynamic inversion in conjunction with adaptive robust control. Available electronically from http : / /hdl .handle .net /1969 .1 /1515 .

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