Showing papers by "Gilead Tadmor published in 1989"

H ∞ interpolation in systems with commensurate input lags

Abstract: $H_\infty $ optimal control and system design problems are known to mathematically reduce to the framework of operator interpolation. Here a solution scheme in the context of systems with multiple input lags is provided. The main result, a linear algebraic characterization of eigenvalue/eigenfunction pairs, can be utilized also in finite-dimensional approximations of the associated Hankel Operator. A particular feature of the analysis is the heavy reliance on time-domain techniques and utilization of explicit time-domain properties of the transfer function.

H ∞ in the time domain: the standard problem

Abstract: Classical optimal control tools make a powerful substitute for current "frequency domain" H∞ methods. Here they are used in solving the standard H∞ problem in a general time-varying setup.