Title: Reconfigurable flight control based on nonlinear dynamic inversion and dynamic control allocation

Authors: Huidong Wang; Xiaoyun Zhang; Jianqiang Yi

Addresses: Shandong University of Finance and Economics, Jinan, Shandong Province 250014, China ' Jinan Engineering Vocational Technical College, Jinan, Shandong Province 250200, China ' Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China

Abstract: Based on nonlinear dynamic inversion (NDI) and dynamic control allocation, a new reconfigurable flight control scheme is proposed for multi effector aircraft. Firstly, basic flight control law is designed by NDI method to produce desired moment command according to the given attitude angle command. Then, the moment command is optimally distributed into individual control surfaces with position and rate constraints by dynamic control allocation (DCA) algorithm. In the face of control surface faults, control reallocation is performed in the remained control surfaces to fulfil flight reconfiguration, and the basic flight control law need not to be redesigned. The reconfigurable flight control scheme is evaluated by a nonlinear six degree-of-freedom (DoF) aircraft model under jammed case and damaged case, respectively. Effectiveness of the reconfigurable flight control method is demonstrated by simulation results.

Keywords: reconfigurable flight control; NDI; nonlinear dynamic inversion; DCA; dynamic control allocation; system control; flight reconfiguration; nonlinear modelling; 6DoF aircraft models; simulation.

DOI: 10.1504/IJSCIP.2014.059683

International Journal of System Control and Information Processing, 2014 Vol.1 No.3, pp.274 - 287

Published online: 06 Mar 2014 *

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