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Relating sampling period and control delay in distributed control systems

conference contribution
posted on 06.12.2017, 00:00 by L Samaranayake, M Leksell, Sanath AlahakoonSanath Alahakoon
The control delay in distributed control systems may be compensated on-line or off-line depending on the required quality of the output, available computational power of the controller node, time stamping and clock synchronizing facilities etc. Irrespective of the compensation technique, there is an upper bound to the constant or variable control delay, which is decided by the plant, controller and the selected sampling period of the distributed computer controlled system. It is shown that in general, if the control delay exceeds the sampling period, the system becomes multi-rate; deteriorate performance as the plant updates do not correspond to the output samples. This paper introduces an adaptive sampling scheme to ensure the control delay is less than the sampling period in steady state and uses the maximum tolerable delay of the system at a particular sampling interval to ensure stable transform from one sampling period to another.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Start Page

274

End Page

277

Number of Pages

4

Start Date

01/01/2005

ISBN-10

142440049X

Location

Belgrade, Serbia

Publisher

IEEE and School of Electrical Engineering, University of Belgrade

Place of Publication

Serbia and Montenegro

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Kungl. Tekniska högskolan; University of Peradeniya;

Era Eligible

Yes

Name of Conference

EUROCON

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