An omnidirectional mobile robot is able, kinematically, to move in any direction regardless of current pose. To date,
nearly all designs and analyses of omnidirectional mobile robots have considered the case of motion on flat, smooth
terrain. In this paper, an investigation of the design and analysis of an omnidirectional mobile robot for use in rough
terrain is presented. Kinematic and geometric properties of the active split offset caster drive mechanism are
investigated along with system and subsystem design guidelines. An optimization method is implemented to explore the
design space. Use of this method results in a robot that has higher mobility than a robot designed using engineering
judgment. A point design generated by the optimization method is shown for a meter-scale mobile robot.
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