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To improve the mobility of locomotive devices on loose, sandy terrain, protrusions or convex patterns called lugs (i.e., grousers) are attached to the surface of a locomotive modulus. Following our previous study, in which the effects of angular speed, lug sinkage length, and soil cumulative deformation on lug-soil interaction forces during the fixed-axis rotational motion were experimentally confirmed,...
To improve the mobility of wheeled robots on loose sandy terrain, lugs (i.e., grousers) are attached to the surface of each wheel. Unlike existing studies that focus on the effects of lug shape (e.g. height and width) on lug-soil interaction forces, this study involved experimental and quantitative analyses to investigate the effects of parameters such as inclination angle, sinkage length, and moving...
Wheeled mobile robots working on sandy soil (e.g. planetary surface, desert, etc.) are commonly equipped with lugs (i.e. grousers) on wheels to improve travelling performance. It has been verified that presence of these lugs significantly affects on the traction performance of the locomotion mechanisms on soft terrains. However, the influences of movable lugs on traction performance are unclear, since...
To enhance the mobility of amphibious robots for multi-terrains tasks, we have proposed an eccentric paddle locomotion mechanism (ePaddle) with several feasible terrestrial and aquatic gaits. In this paper, we present a rigid paddle model for predicting the thrust force in one of the aquatic gaits, namely the rotational paddling gait. Thrust forces calculated by this model demonstrate the idea that...
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