High Speed Navigation of UGVs in Rough Unknown Terrains [article]

Graeme Neff Wilson, University Of Calgary, University Of Calgary, Alejandro Ramirez-Serrano
2013
The traversal of rough a priori unknown terrain by an Unmanned Ground Vehicle (UGV) at high-speed requires the assessment of terrain in front of the vehicle as well as algorithms to select a speed based on the identified terrain. Current techniques are either susceptible to miss-classification, do not address the challenge of speed selection, or have not been experimentally tested. This thesis proposes a geometric terrain identification technique where a range sensor captures a 3D terrain point
more » ... cloud and uses the standard deviation of the terrain point elevations to determine a roughness score. Using this roughness score three methods were proposed in this thesis to select a fast but safe allowable speed for a UGV based on predicting the force the terrain will exert on the UGV while driving. These methods were experimentally tested on rough outdoor terrain to demonstrate and compare their performance.
doi:10.11575/prism/26369 fatcat:vc6j2kns6zfmffh2pw2a6so3bq