Flexible time-response matching in discrete model reduction
A simple way to match the time responses of the full- and reduced-order models at arbitrary sampling points is given for discrete-time systems. It is seen to be a natural extension of the Padé methods and is particularly useful in oscillatory systems. An example illustrates the technique.
Lucas, T.N. 2000. Flexible time-response matching in discrete model reduction. Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering. 214(5): pp.383-386. Available from http://dx.doi.org/10.1243/0959651001540735