English

A Unified Framework for Continuous/Discrete Positive/Bounded Real State-Space Systems

Optimization and Control 2021-02-03 v3 Operator Algebras

Abstract

There are four variants of passive, linear time-invariant systems, described by rational functions: Continuous or Discrete time, Positive or Bounded real. By introducing a quadratic matrix inequality formulation, we present a unifying framework for state-space characterization (a.k.a. Kalman-Yakubovich-Popov Lemma) of the above four classes of passive systems. These four families are matrix-convex as rational functions, and a slightly weaker version holds for the corresponding balanced, state-space realization arrays.

Keywords

Cite

@article{arxiv.2008.04635,
  title  = {A Unified Framework for Continuous/Discrete Positive/Bounded Real State-Space Systems},
  author = {I. Lewkowicz},
  journal= {arXiv preprint arXiv:2008.04635},
  year   = {2021}
}
R2 v1 2026-06-23T17:46:29.035Z