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Tool-Independent Distributed Simulations Using Transmission Line Elements And The Functional Mock-up Interface
Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Fluida och mekatroniska system. Linköpings universitet, Tekniska högskolan.
Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Fluida och mekatroniska system. Linköpings universitet, Tekniska högskolan.
2013 (Engelska)Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

This paper describes how models from different simulation tools can be connected and simulated on different processors by using the Functional Mockup Interface (FMI) and the transmission line element method (TLM). Interconnectivity between programs makes it possible to model each part of a complex system with the best suited tool, which will shorten the modelling time and increase the accuracy of the results. Because the system will be naturally partitioned, it is possible to identify weak links and replace them with transmission line elements, thereby introducing a controlled time delay. This makes the different parts of the system naturally independent, making it possible to simulate large aggregated system models with good performance on multi-core processors. The proposed method is demonstrated on an example model. A suggestion of an XML extension to the FMI standard for describing TLM ports is also presented.

Ort, förlag, år, upplaga, sidor
2013.
Nyckelord [en]
Functional Mockup Interface (FMI), Functional Mockup Unit (FMU), Transmission Line Element Method (TLM), Parallelism, Co-Simulation
Nationell ämneskategori
Teknik och teknologier
Identifikatorer
URN: urn:nbn:se:liu:diva-99870OAI: oai:DiVA.org:liu-99870DiVA, id: diva2:658595
Konferens
53rd SIMS conference on Simulation and Modelling, October 4-6, Reykjavik, Iceland
Tillgänglig från: 2013-10-22 Skapad: 2013-10-22 Senast uppdaterad: 2015-11-19Bibliografiskt granskad
Ingår i avhandling
1. Distributed System Simulation Methods: For Model-Based Product Development
Öppna denna publikation i ny flik eller fönster >>Distributed System Simulation Methods: For Model-Based Product Development
2015 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

Distributed system simulation can increase performance, re-usability and modularity in model-based product development. This thesis investigates four aspects of distributed simulation: multi-threaded simulations, simulation tool coupling, distributed equation solvers and parallel optimization algorithms.

Multi-threaded simulation makes it possible to split up the workload over several processing units. This reduces simulation time, which can save both time and money during the product development cycle. The transmission line element method (TLM) is used to decouple models to independent sub-models.

Different simulation tools are suitable for different problems. Tool coupling makes it possible to use the best suited tool for simulating each part of the whole product. Models from different tools can then be coupled into one aggregated simulation model. An emerging standard for tool coupling is the Functional Mock-up Interface (FMI). It is investigated how this can be used in conjunction with TLM.

Equation-based object-oriented languages (EOOs) are becoming increasing popular. A logical approach is to let the equation solvers maintain the same structure that was used in the modelling process. Methods for achieving this using TLM and FMI are implemented and evaluated.

In addition to parallel simulations, it is also possible to use parallel optimization algorithms. This introduces parallelism on several levels. For this reason, an algorithm for profile-based multi-level scheduling is proposed.

Ort, förlag, år, upplaga, sidor
Linköping: Linköping University Electronic Press, 2015. s. 118
Serie
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1732
Nationell ämneskategori
Elektroteknik och elektronik Strömningsmekanik och akustik
Identifikatorer
urn:nbn:se:liu:diva-122754 (URN)10.3384/diss.diva-122754 (DOI)978-91-7685-875-2 (ISBN)
Disputation
2015-12-18, ACAS, A-huset, Campus Valla, Linköping, 10:15 (Engelska)
Opponent
Handledare
Tillgänglig från: 2015-11-19 Skapad: 2015-11-19 Senast uppdaterad: 2019-11-15Bibliografiskt granskad

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Braun, RobertKrus, Petter

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