Quantifying and Suppressing the Measurement Disturbance in Feedback Controlled Real-Time Systems
2008 (English)In: Real-time systems, ISSN 0922-6443, E-ISSN 1573-1383, Vol. 40, no 1, 44-76 p.Article in journal (Refereed) Published
In the control of continuous and physical systems, the controlled system is sampled sufficiently fast to capture the dynamics of the system. In general, this property cannot be applied to the control of computer systems as the measured variables are often computed over a data set, e.g., deadline miss ratio. In this paper we quantify the disturbance present in the measured variable as a function of the data set size and the sampling period, and we propose a feedback control structure that suppresses the measurement disturbance. The experiments we have carried out show that a controller using the proposed control structure outperforms a traditional control structure with regard to performance reliability.
Place, publisher, year, edition, pages
Springer, 2008. Vol. 40, no 1, 44-76 p.
Adaptive scheduling, Feedback control, Measurement disturbance, System disturbance
IdentifiersURN: urn:nbn:se:liu:diva-12639DOI: 10.1007/s11241-008-9048-3OAI: oai:DiVA.org:liu-12639DiVA: diva2:16752