Robust performance of soft real-time networked control systems with data dropouts

Author

Ling, Qiang ; Lemmon, Michael D.

Author_Institution

Dept. of Electr. Eng., Notre Dame Univ., IN, USA

Volume

2

fYear

2002

fDate

10-13 Dec. 2002

Firstpage

1225

Abstract

This paper derives the power spectral density (PSD) of the output generated by a discrete-time feedback control system in which feedback measurements are dropped with a known probability, ε. This class of systems is a model for soft real-time control systems in which the feedback path is implemented on a nondeterministic computer network. The PSD computed in this paper is a function of the dropout probability. The dropout probability is taken as a measure of the network quality of service (QoS). Based on the derived PSD, the power semi-norm of the output is predicted. So a direct way of linking control system performance(as measured by the power semi-norm of the output) to the network´s QoS (as measured by the dropout probability) is provided.

Keywords

discrete time systems; feedback; probability; quality of service; real-time systems; robust control; telecontrol; PSD; data dropouts; discrete-time feedback control system; feedback measurements; network QoS; network service quality; nondeterministic computer network; power semi-norm; power spectral density; robust performance; soft real-time networked control systems; Density measurement; Feedback control; Networked control systems; Output feedback; Power generation; Power measurement; Power system modeling; Quality of service; Real time systems; Robust control;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control, 2002, Proceedings of the 41st IEEE Conference on

ISSN

0191-2216

Print_ISBN

0-7803-7516-5

Type

conf

DOI

10.1109/CDC.2002.1184681

Filename

1184681