Terrain topology is the principal source of vertical excitation to the vehicle system and must be accurately represented in order to correctly predict the vehicle response. It is desirable to evaluate vehicle and tire models over a wide range of terrain types, but it is computationally impractical to simulate long distances of every terrain variation. This work seeks to study the terrain surface, rather than the terrain profile, to maximize the information available to the tire model (i.e., wheel path data), yet represent it in a compact form. A method to decompose the terrain surface as a combination of deterministic and stochastic components is presented. If some, or all, of the components of the terrain surface are considered to be stochastic, then the sequence can be modeled as a stochastic process. These stochastic representations of terrain surfaces can then be implemented in tire and vehicle models to predict chassis loads.
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November 2013
Research-Article
Developing Compact Models of Terrain Surfaces
John B. Ferris
John B. Ferris
e-mail: jbferris@vt.edu
Virginia Polytechnic Institute and State University
,150 Slayton Avenue
,Danville, VA 24540
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John B. Ferris
e-mail: jbferris@vt.edu
Virginia Polytechnic Institute and State University
,150 Slayton Avenue
,Danville, VA 24540
Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received February 24, 2012; final manuscript received July 12, 2013; published online August 23, 2013. Assoc. Editor: Sean Brennan.
J. Dyn. Sys., Meas., Control. Nov 2013, 135(6): 061008 (9 pages)
Published Online: August 23, 2013
Article history
Received:
February 24, 2012
Revision Received:
July 12, 2013
Citation
Chemistruck, H. M., and Ferris, J. B. (August 23, 2013). "Developing Compact Models of Terrain Surfaces." ASME. J. Dyn. Sys., Meas., Control. November 2013; 135(6): 061008. https://doi.org/10.1115/1.4025016
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