2008 • Journal Article
H2-optimal model reduction of MIMO systems
Authors:
Van Dooren, Paul,
Gallivan, Kyle A.,
Absil, Pierre-Antoine
Published in:
Applied Mathematics Letters
Volume: 21 • Number: 12 • Pages: 1267-1273
We consider the problem of approximating a p × m rational transfer function H(s) of high degree by another p × m rational transfer function bH(s) of much smaller degree. We derive the gradients of the H2-norm of the approximation error and show how stationary points can be described via tangential interpolation.