Stability and Traction Optimization of a Reconfigurable Wheel-Legged Robot  

Oleh:

Grand, Christophe ; Benamar, Faiz ; Plumet, Frederic ; Bidaud, Philippe

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: The International Journal of Robotics Research vol. 23 no. 10-11 (Oct. 2004), page 1041-1058.
Topik: rover mobility; irregular terrains; posture control; stability
Fulltext: 1041.pdf (557.72KB)

Isi artikel

Actively articulated locomotion systems such as hybrid wheel-legged vehicles are a possible way to enhance the locomotion performance of an autonomous mobile robot. In this paper, we address the control of the wheel-legged robot Hylos traveling on irregular sloping terrain. The redundancy of such a system is used to optimize both the balance of traction forces and the tipover stability. The general formulation of this optimization problem is presented, and a suboptimal but computationally efficient solution is proposed. Then, an algorithm to control the robot posture, based on a velocity model, is described. Finally, this algorithm is validated through simulations and experiments that show the capabilities of such a redundantly actuated vehicle to enhance its own safety and autonomy in critical environments.

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