Work

Identity Between Bounded Real and Positive Real Characteristic Values Through the Scattering Relation

Year: 2026

Type: article

Abstract: In this paper, new results regarding the identity that occurs between the characteristic values of the scattering matrixS(s) and the characteristic values of the corresponding impedance matrixZ(s) are provided. The results allow us to obtain reduced-order models with similar approximation degree, considering both the approximation ofS(s) and of the modelZ(s). Even if the computation of the impedance matrix is more immediate, in many cases, the scattering systemsS(s) are considered; therefore, in order to avoid different information degradation between the two reduced-order systems, they must be consistent. Numerical examples regarding both electrical networks and multi-port mechanical systems are discussed.

Source: IEEE Access

DOI: 10.1109/access.2026.3681180

Authors: Adriano Scibilia, Giovanni Garraffa, Qiang Lai, Luigi Fortuna

Institutions: National Research Council, Institute of Intelligent Industrial Systems and Technologies for Advanced Manufacturing, University of Palermo, East China Jiaotong University, Industrial University of Ho Chi Minh City

Language: English

Topic: Advanced Control Systems Design

Subfield: Control and Systems Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,075

OpenAlex ID: W7150718855

FWCI: 15.23

Cites:

Cited by: 6

Related to: 10