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A Unified Method for Solving Inverse, Forward, and Hybrid Manipulator Dynamics using Factor Graphs

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arxiv 1911.10065 v2 pith:EFMVELPJ submitted 2019-11-22 cs.RO

classification cs.RO
keywords dynamicsunifiedfactorgraphsalgorithmsforwardhybridinverse
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This paper describes a unified method solving for inverse, forward, and hybrid dynamics problems for robotic manipulators with either open kinematic chains or closed kinematic loops based on factor graphs. Manipulator dynamics is considered to be a well studied problem, and various different algorithms have been developed to solve each type of dynamics problem. However, they are not easily explained in a unified and intuitive way. In this paper, we introduce factor graphs as a unifying graphical language in which not only to solve all types of dynamics problems, but also explain the classical dynamics algorithms in a unified framework.

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    A sparse factor-graph formulation of the discrete Cosserat rod with midpoint strain integration gives real-time joint estimation of shape, external loads, and actuation for tendon-driven, parallel, and concentric-tube...

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