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A Driving Simulation Platform using Distributed Vehicle Simulators and HLA
Statens väg- och transportforskningsinstitut, Fordonsteknik och simulering, FTS.
Statens väg- och transportforskningsinstitut, Fordonsteknik och simulering, FTS.
Hiq Accelerated Concept Evaluation AB, Stockholm, Sweden.
Pitch Technologies.
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2015 (English)In: Proceedings of the DSC 2015 Europe: Driving Simulation Conference & Exhibition / [ed] Heinrich Bülthoff, Andras Kemeny and Paolo Pretto, 2015, 123-130 p.Conference paper, Published paper (Refereed)
Abstract [en]

Modern vehicles are complex systems consisting of an increasing large multitude of components that operate together. While functional verification on individual components is important, it is also important to test components within a driving environment, both from a functional perspective and from a driver perspective. One proven way for testing is vehicle simulators and in this work the main goals have been to increase flexibility and scalability by introducing a distributed driving simulator platform.

As an example, consider a workflow where a developer can go from a desktop simulation to an intermediate driving simulator to a high fidelity driving simulator with Hardware-In-the-Loop systems close to a finished vehicle in an easy way. To accomplish this, a distributed simulation architecture was designed and implemented that divides a driving simulator environment into four major entities with well-defined interfaces, using HLA as the method of communication. This platform was evaluated on two aspects, flexibility/scalability and timing performance. Results show that increased flexibility and scalability was achieved when using a distributed simulation platform. It is also shown that latency was only slightly increased when using HLA.

Place, publisher, year, edition, pages
2015. 123-130 p.
Keyword [en]
Test, Vehicle, Engine, Performance, Simulator (driving), Computer
National Category
Computer Systems
Research subject
90 Road: Vehicles and vehicle technology, 911 Road: Components of the vehicle; 90 Road: Vehicles and vehicle technology, 96 Road: Vehicle operating and management
Identifiers
URN: urn:nbn:se:liu:diva-136153ISBN: 9783981309935 (print)OAI: oai:DiVA.org:liu-136153DiVA: diva2:1086027
Conference
Driving Simulation Conference 2015. 16-18 september 2015, Tübingen, Germany
Available from: 2016-01-11 Created: 2017-03-31 Last updated: 2017-04-06Bibliographically approved
In thesis
1. Extensions for Distributed Moving Base Driving Simulators
Open this publication in new window or tab >>Extensions for Distributed Moving Base Driving Simulators
2017 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Modern vehicles are complex systems. Different design stages for such a complex system include evaluation using models and submodels, hardware-in-the-loop systems and complete vehicles. Once a vehicle is delivered to the market evaluation continues by the public. One kind of tool that can be used during many stages of a vehicle lifecycle is driving simulators.

The use of driving simulators with a human driver is commonly focused on driver behavior. In a high fidelity moving base driving simulator it is possible to provide realistic and repetitive driving situations using distinctive features such as: physical modelling of driven vehicle, a moving base, a physical cabin interface and an audio and visual representation of the driving environment. A desired but difficult goal to achieve using a moving base driving simulator is to have behavioral validity. In other words, \A driver in a moving base driving simulator should have the same driving behavior as he or she would have during the same driving task in a real vehicle.".

In this thesis the focus is on high fidelity moving base driving simulators. The main target is to improve the behavior validity or to maintain behavior validity while adding complexity to the simulator. One main assumption in this thesis is that systems closer to the final product provide better accuracy and are perceived better if properly integrated. Thus, the approach in this thesis is to try to ease incorporation of such systems using combinations of the methods hardware-in-the-loop and distributed simulation. Hardware-in-the-loop is a method where hardware is interfaced into a software controlled environment/simulation. Distributed simulation is a method where parts of a simulation at physically different locations are connected together. For some simulator laboratories distributed simulation is the only feasible option since some hardware cannot be moved in an easy way.

Results presented in this thesis show that a complete vehicle or hardware-in-the-loop test laboratory can successfully be connected to a moving base driving simulator. Further, it is demonstrated that using a framework for distributed simulation eases communication and integration due to standardized interfaces. One identified potential problem is complexity in interface wrappers when integrating hardware-in-the-loop in a distributed simulation framework. From this aspect, it is important to consider the model design and the intersections between software and hardware models. Another important issue discussed is the increased delay in overhead time when using a framework for distributed simulation.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2017. 18 p.
Series
Linköping Studies in Science and Technology. Thesis, ISSN 0280-7971 ; 1777
National Category
Vehicle Engineering Computer Systems
Identifiers
urn:nbn:se:liu:diva-136146 (URN)10.3384/lic.diva-136146 (DOI)9789176855249 (ISBN)
Presentation
2017-05-12, Alan Turing, hus E, Campus Valla, Linköping University, Linköping, 10:15 (English)
Opponent
Supervisors
Funder
VINNOVA, 2011-03994
Available from: 2017-03-30 Created: 2017-03-30 Last updated: 2017-04-11Bibliographically approved

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