Bounded real and positive real balanced truncation for infinite-dimensional systems

Guiver, Christopher; Opmeer, Mark R.

Abstract

Bounded real balanced truncation for infinite-dimensional systems is considered. This provides reduced order finite-dimensional systems that retain bounded realness. We obtain an error bound analogous to the finite-dimensional case in terms of the bounded real singular values. By using the Cayley transform a gap metric error bound for positive real balanced truncation is subsequently obtained. For a class of systems with an analytic semigroup, we show rapid decay of the bounded real and positive real singular values. Together with the established error bounds, this proves rapid convergence of the bounded real and positive real balanced truncations.

• Journal Article Type: Article
• Publication Date: 2013-03
• Deposit Date: Jul 23, 2020
• Publicly Available Date: Aug 13, 2020
• Journal: Mathematical Control and Related Fields
• Print ISSN: 2156-8472
• Publisher: American Institute of Mathematical Sciences
• Peer Reviewed: Peer Reviewed
• Volume: 3
• Issue: 1
• Pages: 83-119
• DOI: https://doi.org/10.3934/mcrf.2013.3.83
• Keywords: positive real., well-posed linear system, Model reduction, infinite-dimensional system, balanced truncation, bounded real
• Public URL: http://researchrepository.napier.ac.uk/Output/2677379