The quotient SVD and directional aspects of 2 transfer matrices

Abstract

Directional aspects of multiple-input-multiple-output systems relative to one another are studied. The quotient singular value decomposition (QSVD), a generalization of the SVD is used. The definition and some properties of the QSVD are stated. The concepts of the indicator ellipsoid and the oriented energy plot allow for a better visualization of the directional gain. The oriented signal-to-signal ratio, is introduced. It is shown that it can be computed by using the QSVD. Some applications in control are outlined.<>