Design and Control of a Mobile Robot with an Articulated Body

DOI Web Site 15 Citations
  • Shigeo Hirose
    Tokyo Institute of Technology Department of Mechanical Engineering Science 2-12-1-Ookayama, Meguro-ku, Tokyo 152, Japan
  • Akio Morishima
    Tokyo Institute of Technology Department of Mechanical Engineering Science 2-12-1-Ookayama, Meguro-ku, Tokyo 152, Japan

Abstract

<jats:p> Mobile robots having good terrain adaptability, sufficient payload capability, and high mobility are now urgently in de mand. In this paper, design of a practical mobile robot is attempted, with an inspection task in a nuclear reactor as a concrete objective for development. The configuration of the mobile robot is first discussed. A wheel with crawler track, legs, and a snake-like articulated body are shown to be three fundamental configurations. A hybrid configuration consist ing of an articulated body and a crawler track is most ade quate for the nuclear reactor robot because of its excellent terrain adaptability, sufficient payload capability, and high mobility. Design of the joint structure of the articulated body is discussed. Basic control problems such as signal process ing for tactile sensors and control of statically indeterminant forces are also investigated. A mechanical model KR I, a robot with six articulated body segments, 16 degrees of free dom, length 1391 mm, and weight 27.8 kg, is constructed and several experiments are done to demonstrate the basic mobility of the robot and to show the validity of introducing force control. </jats:p>

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