Eigenstructure Assignment by Dynamic Output Feedback

A design method is proposed for low order regulators which assign desired closed-loop eigenvalues and eigenvectors. It is shown that, even if all poles are to be assigned, the regulator may have degree less than that of a minimal order state observer. Connections with the generalized dynamic cover problem are pointed out, and a simple algorithm is given to solve that problem for our special case. An example of eigenstructure assignment with dynamic output feedback for a relaxed static stability (RSS) fighter aircraft completes this paper.