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Open AccessProceedings ArticleDOI

Motion Planning for Multi-Mobile-Manipulator Payload Transport Systems

TLDR
A hierarchical approach is introduced to compute realtime collision-free motion plans for a formation of mobile manipulator robots and a convex decentralized model-predictive controller is formulated to plan collision- free trajectories for the formation ofMobile manipulators.
Abstract
In this paper, a kinematic motion planning algorithm for cooperative spatial payload manipulation is presented. A hierarchical approach is introduced to compute realtime collision-free motion plans for a formation of mobile manipulator robots. Initially, collision-free configurations of a deformable 2-D virtual bounding box are identified, over a planning horizon, to determine a convex workspace for the entire system. Then, 3-D payload configurations whose projections lie within the convex workspace are computed. Finally, a convex decentralized model-predictive controller is formulated to plan collision-free trajectories for the formation of mobile manipulators. Our work facilitates real-time motion planning for the system and is scalable in the number of robots. The algorithm is validated in simulated dynamic environments.

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Proceedings ArticleDOI

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Book ChapterDOI

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References
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Book ChapterDOI

Cooperative Grasping and Transport Using Multiple Quadrotors

TL;DR: This paper proposes individual robot control laws defined with respect to the payload that stabilize the payload along three-dimensional trajectories and detail the design of a gripping mechanism attached to each quadrotor that permits autonomous grasping of the payload.
Journal ArticleDOI

OSQP: An Operator Splitting Solver for Quadratic Programs

TL;DR: This work presents a general-purpose solver for convex quadratic programs based on the alternating direction method of multipliers, employing a novel operator splitting technique that requires the solution of a quasi-definite linear system with the same coefficient matrix at almost every iteration.
Journal ArticleDOI

Nonholonomic navigation and control of cooperating mobile manipulators

TL;DR: The first motion planning methodology applicable to articulated, nonpoint nonholonomic robots with guaranteed collision avoidance and convergence properties is presented, based on a new class of nonsmooth Lyapunov functions and a novel extension of the navigation function method to account for nonpoint articulated robots.
Journal ArticleDOI

Coordination and decentralized cooperation of multiple mobile manipulators

TL;DR: This work builds on four methodologies developed for fixed-base manipulation and presents the extension of these methodologies to mobile manipulation systems and proposes a new decentralized control structure for cooperative tasks.
Journal ArticleDOI

Swarm assignment and trajectory optimization using variable-swarm, distributed auction assignment and sequential convex programming

TL;DR: The implementation of the distributed auction algorithm and sequential convex programming using model predictive control produces the swarm assignment and trajectory optimization (SATO) algorithm that transfers a swarm of robots or vehicles to a desired shape in a distributed fashion.