On Autonomous Humanoid Robots: Contact Planning for Locomotion and Manipulation

Karim Bouyarmane 1, 2
1 IDH - Interactive Digital Humans
LIRMM - Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier
Abstract : We propose a unified planning approach for autonomous humanoid robots that perform dexterous locomotion and manipulation tasks. These tasks are based on contact transitions; for instance between the locomotion limbs of the robot and the environment, or between the manipulation end-effector of the robot and the manipulated object. We plan these contact transitions for general abstract systems made of arbitrary numbers of robots, manipulated objects, and environment supports. This approach allows us to erase distinction between the locomotion and manipulation nature of the tasks and to extend the method to various other planning problems such as collaborative manipulation and locomotion between multiple agents. We introduce our non-decoupled locomotion-and-manipulation planning paradigm by exhibiting the induced stratification of the configuration space of example simplified systems for which we analytically solve the problem comparing geometric path planning, kinematic non-holonomic planning, and dynamic trajectory planning methods. We then present the contact planning algorithm based on best-first search. The algorithm relies on an inverse kinematics solver that handles general robot-robot, robot-object, robot-environment, object-environment, non-horizontal, non-coplanar, friction-based, multi-contact configurations, under static equilibrium and physical limitation constraints. The continuous dynamics-consistent motion is generated in the locomotion case using a quadratic programming formulation. We finally envision the extension to deformable environment contact support by considering linear elasticity behaviours solved using the finite element method.
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Karim Bouyarmane. On Autonomous Humanoid Robots: Contact Planning for Locomotion and Manipulation. Automatic. Université Montpellier II - Sciences et Techniques du Languedoc, 2011. English. ⟨NNT : 2011MON20104⟩. ⟨tel-00806453⟩

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