Title: Power spectral density approximations of longitudinal road profiles

Authors: Peter Andren

Addresses: Department of Infrastructure Maintenance, Swedish National Road and Transport Research Institute, SE-581 95 Linkoping, Sweden

Abstract: The power spectral density (PSD) representation of road profiles can be used both to assess the road roughness, and as an input to vehicle dynamics. The PSD is often approximated with a simple function, using only a few parameters. The present paper presents a literature survey of such PSD approximations, and tests four approximations on longitudinal road profile data from the entire Swedish state road network.

Keywords: literature review; longitudinal road profiles; power spectrum density; spectral analysis; Swedish road network; Sweden; road roughness; vehicle dynamics; vehicle modelling; simulation.

DOI: 10.1504/IJVD.2006.008450

International Journal of Vehicle Design, 2006 Vol.40 No.1/2/3, pp.2 - 14

Available online: 21 Dec 2005 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article