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Documents authored by Mandrioli, Claudio

Document
DOI: 10.4230/OASIcs.Fog-IoT.2020.8
Evaluation of Burst Failure Robustness of Control Systems in the Fog

Authors: Nils Vreman and Claudio Mandrioli

Published in: OASIcs, Volume 80, 2nd Workshop on Fog Computing and the IoT (Fog-IoT 2020)

Abstract
This paper investigates the robustness of control systems when a controller is run in a Fog environment. Control systems in the Fog are introduced and a discussion regarding relevant faults is presented. A preliminary investigation of the robustness properties of a MinSeg case study is presented and commented. The discussion is then used to outline future lines of research.
Cite as

Nils Vreman and Claudio Mandrioli. Evaluation of Burst Failure Robustness of Control Systems in the Fog. In 2nd Workshop on Fog Computing and the IoT (Fog-IoT 2020). Open Access Series in Informatics (OASIcs), Volume 80, pp. 8:1-8:8, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)

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@InProceedings{vreman_et_al:OASIcs.Fog-IoT.2020.8,
  author =	{Vreman, Nils and Mandrioli, Claudio},
  title =	{{Evaluation of Burst Failure Robustness of Control Systems in the Fog}},
  booktitle =	{2nd Workshop on Fog Computing and the IoT (Fog-IoT 2020)},
  pages =	{8:1--8:8},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-144-3},
  ISSN =	{2190-6807},
  year =	{2020},
  volume =	{80},
  editor =	{Cervin, Anton and Yang, Yang},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.Fog-IoT.2020.8},
  URN =		{urn:nbn:de:0030-drops-120025},
  doi =		{10.4230/OASIcs.Fog-IoT.2020.8},
  annote =	{Keywords: Networked Control Systems, Stability Analysis, Control over Internet, Fault Tolerance}
}
Document
Artifact
DOI: 10.4230/DARTS.5.1.3
DMAC: Deadline-Miss-Aware Control (Artifact)

Authors: Paolo Pazzaglia, Claudio Mandrioli, Martina Maggio, and Anton Cervin

Published in: DARTS, Volume 5, Issue 1, Special Issue of the 31st Euromicro Conference on Real-Time Systems (ECRTS 2019)

Abstract
The real-time implementation of periodic controllers requires solving a co-design problem, in which the choice of the controller sampling period is a crucial element. Classic design techniques limit the period exploration to safe values, that guarantee the correct execution of the controller alongside the remaining real-time load, i.e., ensuring that the controller worst-case response time does not exceed its deadline. This paper presents the artifact linked to DMAC: the first formally-grounded controller design strategy that explores shorter periods, thus explicitly taking into account the possibility of missing deadlines. The experimental results obtained with this artifact show that the DMAC design proposal - i.e., exploring the space where deadlines can be missed and handled with different strategies - greatly outperforms classical control design techniques.
Cite as

Paolo Pazzaglia, Claudio Mandrioli, Martina Maggio, and Anton Cervin. DMAC: Deadline-Miss-Aware Control (Artifact). In Special Issue of the 31st Euromicro Conference on Real-Time Systems (ECRTS 2019). Dagstuhl Artifacts Series (DARTS), Volume 5, Issue 1, pp. 3:1-3:3, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2019)

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@Article{pazzaglia_et_al:DARTS.5.1.3,
  author =	{Pazzaglia, Paolo and Mandrioli, Claudio and Maggio, Martina and Cervin, Anton},
  title =	{{DMAC: Deadline-Miss-Aware Control}},
  pages =	{3:1--3:3},
  journal =	{Dagstuhl Artifacts Series},
  ISSN =	{2509-8195},
  year =	{2019},
  volume =	{5},
  number =	{1},
  editor =	{Pazzaglia, Paolo and Mandrioli, Claudio and Maggio, Martina and Cervin, Anton},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DARTS.5.1.3},
  URN =		{urn:nbn:de:0030-drops-107315},
  doi =		{10.4230/DARTS.5.1.3},
  annote =	{Keywords: Weakly-Hard Real-Time Systems, Deadline Miss Handling, Control Design}
}
Document
DOI: 10.4230/LIPIcs.ECRTS.2019.1
DMAC: Deadline-Miss-Aware Control

Authors: Paolo Pazzaglia, Claudio Mandrioli, Martina Maggio, and Anton Cervin

Published in: LIPIcs, Volume 133, 31st Euromicro Conference on Real-Time Systems (ECRTS 2019)

Abstract
The real-time implementation of periodic controllers requires solving a co-design problem, in which the choice of the controller sampling period is a crucial element. Classic design techniques limit the period exploration to safe values, that guarantee the correct execution of the controller alongside the remaining real-time load, i.e., ensuring that the controller worst-case response time does not exceed its deadline. This paper presents DMAC: the first formally-grounded controller design strategy that explores shorter periods, thus explicitly taking into account the possibility of missing deadlines. The design leverages information about the probability that specific sub-sequences of deadline misses are experienced. The result is a fixed controller that on average works as the ideal clairvoyant time-varying controller that knows future deadline hits and misses. We obtain a safe estimate of the hit and miss events using the scenario theory, that allows us to provide probabilistic guarantees. The paper analyzes controllers implemented using the Logical Execution Time paradigm and three different strategies to handle deadline miss events: killing the job, letting the job continue but skipping the next activation, and letting the job continue using a limited queue of jobs. Experimental results show that our design proposal - i.e., exploring the space where deadlines can be missed and handled with different strategies - greatly outperforms classical control design techniques.
Cite as

Paolo Pazzaglia, Claudio Mandrioli, Martina Maggio, and Anton Cervin. DMAC: Deadline-Miss-Aware Control. In 31st Euromicro Conference on Real-Time Systems (ECRTS 2019). Leibniz International Proceedings in Informatics (LIPIcs), Volume 133, pp. 1:1-1:24, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2019)

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@InProceedings{pazzaglia_et_al:LIPIcs.ECRTS.2019.1,
  author =	{Pazzaglia, Paolo and Mandrioli, Claudio and Maggio, Martina and Cervin, Anton},
  title =	{{DMAC: Deadline-Miss-Aware Control}},
  booktitle =	{31st Euromicro Conference on Real-Time Systems (ECRTS 2019)},
  pages =	{1:1--1:24},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-110-8},
  ISSN =	{1868-8969},
  year =	{2019},
  volume =	{133},
  editor =	{Quinton, Sophie},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ECRTS.2019.1},
  URN =		{urn:nbn:de:0030-drops-107387},
  doi =		{10.4230/LIPIcs.ECRTS.2019.1},
  annote =	{Keywords: Weakly-Hard Real-Time Systems, Deadline Miss Handling, Control Design}
}
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