Error Mitigation in Roughness Measurements

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dc.contributor.authorWang, Zhuosongen
dc.contributor.committeechairFerris, John B.en
dc.contributor.committeememberTaheri, Saieden
dc.contributor.committeememberWicks, Alfred L.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2014-08-14T08:00:58Zen
dc.date.available2014-08-14T08:00:58Zen
dc.date.issued2014-08-13en
dc.description.abstractRoad roughness is an important factor in determining the quality of a stretch of road. The International Roughness Index, a specific measure of road roughness, is widely used metric. However, in order to measure roughness, an accurate road profile must exist. To measure the roads, terrain profiling systems are commonly used. Modern systems based on laser scanners and inertial navigation systems (INS) are able to measure thousands of data points per seconds over a wide path. However, because of the subsystems in the profiling systems, they are susceptible to errors that reduce the accuracy of the measurements. Thus, both major subsystems - the laser and the navigation system - must be accurate and synchronized for the road to be correctly scanned. The sensors' mounting was investigated to ensure that the vehicle motion is accurately captured and accounted for, demonstrated in the Vehicle Terrain Performance Lab's (VTPL) Ford Explorer profilometer. Next, INS errors were addressed. These may include drift in the inertial measurement unit or errors due to poor reception with the global navigation satellite system. The solution to these errors was demonstrated through the VTPL's HMMWV profilometer.en
dc.description.degreeMaster of Scienceen
dc.format.mediumETDen
dc.identifier.othervt_gsexam:3393en
dc.identifier.urihttp://hdl.handle.net/10919/50146en
dc.publisherVirginia Techen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectroughnessen
dc.subjectIRIen
dc.subjectterrain measurementen
dc.titleError Mitigation in Roughness Measurementsen
dc.typeThesisen
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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