Title :
Eigenstructure invariance for an anticipated flight control surface failure
Author :
Belkharraz, Abderrazak I. ; Sobel, Kenneth
Author_Institution :
Dept. of Electr. Eng., City Univ. of New York, NY, USA
Abstract :
Consider an LTI plant which is augmented with first order actuator dynamics. Suppose we know which control surface is most likely to fail. We seek a constant gain output feedback controller such that the dominant eigenstructure is invariant under this failure. We show mathematically that the solution is that the surface which will fail should not be used. That is, if the jth control surface will fail, then the jth row of the constant output feedback gain matrix will be zero. We apply our results to the design of a stability augmentation system for the linearized lateral dynamics of the F/A-18 aircraft
Keywords :
aircraft control; eigenvalues and eigenfunctions; fault tolerance; feedback; linear systems; matrix algebra; military aircraft; stability; F/A-18 aircraft; LTI plant; anticipated flight control surface failure; constant output feedback gain matrix; eigenstructure invariance; feedback; first-order actuator dynamics; invariant dominant eigenstructure; linearized lateral dynamics; stability augmentation system design; Actuators; Aerospace control; Aircraft; Cities and towns; Educational institutions; Eigenvalues and eigenfunctions; Filters; NASA; Output feedback; Stability;
Conference_Titel :
American Control Conference, 2001. Proceedings of the 2001
Conference_Location :
Arlington, VA
Print_ISBN :
0-7803-6495-3
DOI :
10.1109/ACC.2001.946002
