ABSTRACT

Eigenstructure assignment is a useful tool that allows the designer to satisfy damping, settling time, and mode decoupling specifications directly by choosing eigenvalues and eigenvectors. Andry et al. [1] have applied eigenstructure assignment to design a stability augmentation system for the lateral dynamics of the L-1011 aircraft. Both constant gain output feedback and gain suppression designs are proposed. Sobel and Shapiro [30] used eigenstructure assignment to design dynamic compensators for the L-1011 aircraft. First-and second-order compensators were proposed for the case in which sideslip angle could not be measured. Later, Sobel et al. [33] proposed a systematic method for choosing the elements of the feedback gain matrix which can be suppressed to zero with minimal effect on the eigenvalue and eigenvector

“73648_C016” — #2

assignment. A design of an eigenstructure assignment gain-suppression flight controller is shown for F-18 High Angle of Attack Research Vehicle (HARV) aircraft.