Numerical algorithms and existence results on LQ control of descriptor systems with conditions on x(0-) and stability

Author: Stefanovski, Joven¹

Source: International Journal of Control, Volume 82, Number 1, January 2009 , pp. 155-170(16)

Publisher: Taylor and Francis Ltd

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Abstract:

We present a numerical algorithm, based on using orthogonal matrices, and sufficient existence conditions for an LQ control problem of descriptor systems, which generalise the existing results. The associated Hamiltonian pencil may be singular and may have infinite generalised eigenvalues (IGEs) of multiplicity > 1. Besides on x(0+), we present optimality conditions on x(0-). We present sufficient conditions for stability of the optimal closed-loop descriptor system, as well as a stabilisation algorithm.

Keywords: Euler-Lagrange differential equations; para-hermitian pencil; descriptor system; deflating subspace

Document Type: Research article

DOI: 10.1080/00207170802029597

Affiliations: 1: Control & Informatics Div., JP Strezevo, Bitola, Republic of Macedonia

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