Path-following control of wheeled planetary exploration robots moving on deformable rough terrain

ScientificWorldJournal. 2014 Mar 26:2014:793526. doi: 10.1155/2014/793526. eCollection 2014.

Abstract

The control of planetary rovers, which are high performance mobile robots that move on deformable rough terrain, is a challenging problem. Taking lateral skid into account, this paper presents a rough terrain model and nonholonomic kinematics model for planetary rovers. An approach is proposed in which the reference path is generated according to the planned path by combining look-ahead distance and path updating distance on the basis of the carrot following method. A path-following strategy for wheeled planetary exploration robots incorporating slip compensation is designed. Simulation results of a four-wheeled robot on deformable rough terrain verify that it can be controlled to follow a planned path with good precision, despite the fact that the wheels will obviously skid and slip.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Algorithms
  • Models, Theoretical*
  • Robotics*