Stability and Performance Analysis of Control Systems Subject to Bursts of Deadline Misses

Forskningsoutput: Kapitel i bok/rapport/Conference proceedingKonferenspaper i proceeding

Abstract

Control systems are by design robust to various disturbances, ranging from noise to unmodelled dynamics. Recent work on the weakly hard model---applied to controllers---has shown that control tasks can also be inherently robust to deadline misses. However, existing exact analyses are limited to the stability of the closed-loop system. In this paper we show that stability is important but cannot be the only factor to determine whether the behaviour of a system is acceptable also under deadline misses. We focus on systems that experience bursts of deadline misses and on their recovery to normal operation. We apply the resulting comprehensive analysis (that includes both stability and performance) to a Furuta pendulum, comparing simulated data and data obtained with the real plant. We further evaluate our analysis using a benchmark set composed of 133 systems, which is considered representative of industrial control plants. Our results show the handling of the control signal is an extremely important factor in the performance degradation that the controller experiences---a clear indication that only a stability test does not give enough indication about the robustness to deadline misses.

Detaljer

Författare
Enheter & grupper
Externa organisationer
  • Saarland University
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Reglerteknik

Nyckelord

Originalspråkengelska
Titel på värdpublikation33rd Euromicro Conference on Real-Time Systems (ECRTS 2021)
FörlagSchloss Dagstuhl - Leibniz-Zentrum für Informatik
StatusAccepted/In press - 2021 apr 28
PublikationskategoriForskning
Peer review utfördJa
Evenemang33rd Euromicro Conference on Real-Time Systems (ECRTS 2021) - virtual event
Varaktighet: 2021 jul 52021 jul 9
https://www.ecrts.org/

Konferens

Konferens33rd Euromicro Conference on Real-Time Systems (ECRTS 2021)
Period2021/07/052021/07/09
Internetadress

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