Research Papers

An Approach for Realistic Simulation of Real Road Condition in a Moving Base Driving Simulator

[+] Author and Article Information
Anne Bolling, Jonas Jansson, Mattias Hjort, Mats Lidström, Staffan Nordmark, Håkan Sehammar, Leif Sjögren

 Swedish Road and Transport Research Institute (VTI), S581 95 Linköping, Sweden

J. Comput. Inf. Sci. Eng 11(4), 041009 (Dec 06, 2011) (7 pages) doi:10.1115/1.4005450 History: Received June 29, 2011; Revised October 11, 2011; Published December 06, 2011; Online December 06, 2011

With today’s advanced measurement equipment for monitoring road condition, it is possible to measure road geometry at high precision within a large span of wavelengths. Detailed information about the roads’ longitudinal and lateral profiles, including macro texture, would in theory be sufficient for a realistic reproduction of road induced vibration and noise in a driving simulator. Especially, it would be possible to create a direct connection between the visual information of the road condition and the ride experience, which would increase the level of realism in the simulation. VTI has, during three years, performed an internal project called SHAKE with the aim to develop and implement models in VTI driving simulator III that use measured road data for generating realistic vibrations and audible road noise connected to the visual impression presented on the projection screen. This has indeed resulted in a more realistic driving experience, and a validation study with test persons driving both in the simulator and in the field has been undertaken. The OpenDRIVE standard is used as a framework for describing the road properties (e.g., visual, vibrations, and noise). For this purpose, some augmentations to the OpenDRIVE standard had to be made. This paper describes the technical implementations in the driving simulator, along with results from test drives on the implemented road sections.

Copyright © 2011 by American Society of Mechanical Engineers
Topics: Vibration , Roads , Simulation
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Figure 1

VTI Simulator III

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Figure 3

Road surface characteristics

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Figure 4

Principles of the VTI simulator vibration table (rear view)

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Figure 5

Principles of the roll-axis model used in the vibration model: (a) original version; (b) modified and improved version

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Figure 6

Lateral stiffness of tire

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Figure 7

Example of shock absorber characteristics with added Coulomb friction

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Figure 8

Comparison between PSD diagrams for vibrations measured in the simulator and in the real car (Field Test). Top: the roll velocity; Bottom: vertical acceleration. Speed is 70 km/h.

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Figure 9

OpenDRIVE and VTI’s extension

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Figure 10

Example of a road with cracks and patches

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Figure 11

Example of two of the roads (ruts with water and road with cracks in the right wheel track and edge deformations)



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