Implementation of a self-triggered control strategy over IEEE 802.15.4
A self-triggered control strategy implementation on a IEEE 802.15.4 based network can prove to be quite difficult. In this master thesis project a study of the IEEE 802.15.4 protocol is conducted to understand what constraints it poses to an iplementation of a self-triggered controller and the poss...
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ndltd-UPSALLA1-oai-DiVA.org-kth-577092013-01-08T13:51:37ZImplementation of a self-triggered control strategy over IEEE 802.15.4engPantzar, DanKTH, Reglerteknik2011A self-triggered control strategy implementation on a IEEE 802.15.4 based network can prove to be quite difficult. In this master thesis project a study of the IEEE 802.15.4 protocol is conducted to understand what constraints it poses to an iplementation of a self-triggered controller and the possibility to use it as a feedback link in a control process. A self-triggered control strategy recently introduced by Tiberi et al. is implemented on a wireless sensor network. An experimental test to prove that it is possible to use a self-trigger control is presented. A PI-controller is designed and used on a system where the temperature is measured with a wireless sensor located on a Mote(iv) Tmote Sky. The feedback link in the control process is over a IEEE 802.15.4 network. It is shown that a self-triggered control strategy delivers an equal control result compared to a periodic control strategy while reducing the energy consumption of the network. The results from the conducted experiments show that the hardware in use is not yet ready for the self-triggered control strategy. Even though the same control performance as a periodic controller was achieved, the hardware has some flaws. Problems with beacon adaptivity as well as computation constraints were discovered. It is concluded that for a system with low demands on precision and with a slow dynamic the self-triggered control performs well on Mote(iv) Tmote Sky units. However, a fast system with a high demand on precision is not ready for the self-triggered control implementation while using Tmote Sky platforms. Student thesisinfo:eu-repo/semantics/bachelorThesistexthttp://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-57709EES Examensarbete / Master Thesis ; XR-EE-RT 2011:004application/pdfinfo:eu-repo/semantics/openAccess |
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A self-triggered control strategy implementation on a IEEE 802.15.4 based network can prove to be quite difficult. In this master thesis project a study of the IEEE 802.15.4 protocol is conducted to understand what constraints it poses to an iplementation of a self-triggered controller and the possibility to use it as a feedback link in a control process. A self-triggered control strategy recently introduced by Tiberi et al. is implemented on a wireless sensor network. An experimental test to prove that it is possible to use a self-trigger control is presented. A PI-controller is designed and used on a system where the temperature is measured with a wireless sensor located on a Mote(iv) Tmote Sky. The feedback link in the control process is over a IEEE 802.15.4 network. It is shown that a self-triggered control strategy delivers an equal control result compared to a periodic control strategy while reducing the energy consumption of the network. The results from the conducted experiments show that the hardware in use is not yet ready for the self-triggered control strategy. Even though the same control performance as a periodic controller was achieved, the hardware has some flaws. Problems with beacon adaptivity as well as computation constraints were discovered. It is concluded that for a system with low demands on precision and with a slow dynamic the self-triggered control performs well on Mote(iv) Tmote Sky units. However, a fast system with a high demand on precision is not ready for the self-triggered control implementation while using Tmote Sky platforms. |
author |
Pantzar, Dan |
spellingShingle |
Pantzar, Dan Implementation of a self-triggered control strategy over IEEE 802.15.4 |
author_facet |
Pantzar, Dan |
author_sort |
Pantzar, Dan |
title |
Implementation of a self-triggered control strategy over IEEE 802.15.4 |
title_short |
Implementation of a self-triggered control strategy over IEEE 802.15.4 |
title_full |
Implementation of a self-triggered control strategy over IEEE 802.15.4 |
title_fullStr |
Implementation of a self-triggered control strategy over IEEE 802.15.4 |
title_full_unstemmed |
Implementation of a self-triggered control strategy over IEEE 802.15.4 |
title_sort |
implementation of a self-triggered control strategy over ieee 802.15.4 |
publisher |
KTH, Reglerteknik |
publishDate |
2011 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-57709 |
work_keys_str_mv |
AT pantzardan implementationofaselftriggeredcontrolstrategyoverieee802154 |
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1716530705811374080 |