Identification of Road Irregularities via Vehicle Accelerations

Files in This Item:
File Description SizeFormat 
c101.pdf660.58 kBAdobe PDFDownload
Title: Identification of Road Irregularities via Vehicle Accelerations
Authors: O'Brien, Eugene J.
McGetrick, P.
González, Arturo
Permanent link:
Date: 2010
Online since: 2013-01-16T16:31:16Z
Abstract: A periodic monitoring of the pavement condition facilitates a cost-effective distribution of the resources available for maintenance of the road infrastructure network. The task can be accurately carried out using profilometers, but such an approach is generally expensive. This paper presents a method to collect information on the road profile via accelerometers mounted in a fleet of non-specialist vehicles, such as police cars, that are in use for other purposes. It proposes an optimisation algorithm, based on Cross Entropy theory, to predict road irregularities. The Cross Entropy algorithm estimates the height of the road irregularities from vehicle accelerations at each point in time. To test the algorithm, the crossing of a half-car roll model is simulated over a range of road profiles to obtain accelerations of the vehicle sprung and unsprung masses. Then, the simulated vehicle accelerations are used as input in an iterative procedure that searches for the best solution to the inverse problem of finding road irregularities. In each iteration, a sample of road profiles is generated and an objective function defined as the sum of squares of differences between the ‘measured’ and predicted accelerations is minimized until convergence is reached. The reconstructed profile is classified according to ISO and IRI recommendations and compared to its original class. Results demonstrate that the approach is feasible and that a good estimate of the short-wavelength features of the road profile can be detected, despite the variability between the vehicles used to collect the data.
Type of material: Conference Publication
Keywords: Roads--Maintenance and repairRoad conditionsAccelerometers
Language: en
Status of Item: Not peer reviewed
Conference Details: Transport Research Arena Europe 2010, 7-10th June, Brussels, Belgium
Appears in Collections:Civil Engineering Research Collection

Show full item record

Google ScholarTM


This item is available under the Attribution-NonCommercial-NoDerivs 3.0 Ireland. No item may be reproduced for commercial purposes. For other possible restrictions on use please refer to the publisher's URL where this is made available, or to notes contained in the item itself. Other terms may apply.