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Real-time control in industrial IoT
Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.
Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.
2015 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Great advances in cloud computing have drawn the interest of industry. Cloud infrastructures areused, mainly, for monitoring the shop oor. In recent years cloud technologies combined with IoTtechnologies have initiated the eort to close loops between industrial applications and cloud infras-tructures. This thesis examines the eect of including remote servers, both local and centralized,in the closed control loop. Specically, we investigate how delays and jitter aect the closed controlloop. A prototype is developed to include servers on a control loop and inject delays and jitter inthe network. Furthermore, delay mitigation mechanisms are proposed and, using the prototype, anumber of experiments are performed to evaluate them. The mitigation mechanisms focus mainlyon delays and jitter that are larger than the period of closed control loop. The proposed mechanismsimprove the closed control loop response but still fall short compared to the performance of the closecontrol loop when it executes locally, without any servers included. We also, show that local serverscan be included in the closed control loop without signicant degradation in the performance of thesystem.

Place, publisher, year, edition, pages
2015. , 43 p.
National Category
Embedded Systems
Identifiers
URN: urn:nbn:se:mdh:diva-28309OAI: oai:DiVA.org:mdh-28309DiVA: diva2:821335
External cooperation
ABB Corporate research
Subject / course
Miscellaneous
Presentation
2015-06-04, Gamma, U-builduing, MDH, Högskoleplan 1, Västerås, 09:55 (English)
Supervisors
Examiners
Available from: 2015-06-30 Created: 2015-06-15 Last updated: 2015-06-30Bibliographically approved

Open Access in DiVA

fulltext(1773 kB)881 downloads
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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf