Implementing and evaluating the coordination layer andtime-synchronization of a new protocol for industrial communication networks

Download

index.pdf

Date

2011

Author

Turan, Ulaş

Metadata

Show full item record

Item Usage Stats

240
views

95
downloads

Currently automation components of large-scale industrial systems are realized with distributed controller devices that use local sensor/actuator events and exchange shared events with communication networks. Fast paced improvement of Ethernet provoked its usage in industrial communication networks. The incompatibility of standard Ethernet protocol with the real-time requirements encouraged industry and academic researchers to provide a resolution for this problem. However, the existing solutions in the literature suggest a static bandwidth allocation for each controller device which usually leads to an inefficient bandwidth use.Dynamic Distributed Dependable Real-time Industrial Communication Protocol (D3RIP) family dynamically updates the necessary bandwidth allocation according to the messages generated by the control application. D3RIP is composed of two protocols; interface layer that provides time-slotted access to the shared medium based on an accurate clock synchronization of the distributed controller devices and coordination layer that decides the ownership of real-time slots. In this thesis, coordination layer protocol of D3RIP family and the IEEE 1588 time synchronization protocol is implemented and tested on the real hardware system that resembles a factory plant floor. In the end, we constructed a system that runs an instance of D3RIP family with 3ms time-slots that guarantees 6.6ms latency for the real-time packets of control application. The results proved that our implementation may be used in distributed controller realizations and encouraged us to further improve the timing constraints.

Subject Keywords

Telecommunication.

URI

http://etd.lib.metu.edu.tr/upload/12613576/index.pdf
https://hdl.handle.net/11511/21064

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Implementation of stanag 428 hf modem software on tms320c54x digital signal processor Örümlü, Erhan; Baykal, Buyurman; Department of Electrical and Electronics Engineering (2004) In this research, STANAG 4285 HF modem software is implemented on TMS320C54x fixed point digital signal processor. The software is optimized in order to meet real-time operation requirements. A fractionally spaced least mean square (LMS) decision feedback equalizer (DFE) is employed for the receiver. In order to improve the convergence of the LMS algorithm a multipass technique is utilized. Based on Watterson̕s model, an HF channel simulator is employed for evaluating the performance of the modem. The simul...
Multi-layer network design problems in telecommunication Yüksel Ergün, İnci; Kırca, Ömer; Süral, Haldun; Department of Industrial Engineering (2013) The telecommunication network design problem is to configure a telecommunication network of major hardware and their links in order to satisfy traffic demands and flows subject to a set of constraints arising from topology, capacity, and technology. Telecommunication network design has been studied in several disciplines and its literature is intricate. In this study, we classify the telecommunication network design problems in the literature from the perspective of operations research and review the networ...
Implementation and comparison of the advanced encryption standard finalist algorithms on tms320c54x Serter, Ahmet Volkan; Yücel, Melek D; Department of Electrical and Electronics Engineering (2005) Implementation aspects of Advanced Encryption Standard (AES) Contest finalist algorithms (MARS, RC6, RIJNDAEL, SERPENT and TWOFISH) are studied on TMS320C54X processor. The C codes written by Brian Gladman in 1999 are adapted to TMS320C54X and the speed and memory usage values are compared with the adaptation of Karol Gorski and Michal Skalski̕s implementation in 1999. The effects of implementation environment are investigated by comparing the two implementations. The sensitivities of the finalist algorithm...
Resource management in callular communication networks with subscriber profile prediction Yılmaz, Nusrat; Ergül, Rüyal; Department of Electrical and Electronics Engineering (2005) In this study, a dynamic resource management and subscriber profile prediction scheme for mobile communication systems is presented. The aim is to achieve a high level of QoS for both handoff calls and new calls, while at the same time to improve the utilization of wireless network resources. The simultaneous satisfaction of these two actually conflicting interests will be thanks to two major key features. First, it will be due to the individual subscriber profile based prior information about handoff reser...
Distributed Real-Time Protocols for Industrial Control Systems: Framework and Examples SCHMİDT, KLAUS WERNER; Schmidt, Şenan Ece (2012-10-01) The automation of today's large-scale industrial systems relies on the operation of distributed controller devices that perform local computations and exchange information via communication networks. The subject of this paper is the development of a family of shared-medium industrial communication protocols that support the transmission of real-time (RT) and nonreal-time (nRT) data among distributed controller devices. Different from existing protocols, we suggest to incorporate information that is availabl...

Citation Formats

U. Turan, “Implementing and evaluating the coordination layer andtime-synchronization of a new protocol for industrial communication networks,” M.S. - Master of Science, Middle East Technical University, 2011.