相補性に基づく反応的な全身衝突回避ロボット動作の生成
On the Synthesis of Reactive Collision-Free Whole-Body Robot Motions: A Complementarity-based Approach
ロボット全身と障害物の非貫通制約を線形相補性問題として定式化し、1kHzで連続的な反応動作計画を生成するFLIQCプランナを提案した。
著者: Haowen Yao, Riddhiman Laha, Anirban Sinha, Jonas Hall, Luis F. C. Figueredo, Nilanjan Chakraborty, Sami Haddadin
分類: cs.RO
原文アブストラクト
This paper is about generating motion plans for high degree-of-freedom systems that account for collisions along the entire body. A particular class of mathematical programs with complementarity constraints become useful in this regard. Optimization-based planners can tackle confined-space trajectory planning while being cognizant of robot constraints. However, introducing obstacles in this setting transforms the formulation into a non-convex problem (oftentimes with ill-posed bilinear constraints), which is non-trivial in a real-time setting. To this end, we present the FLIQC (Fast LInear Quadratic Complementarity based) motion planner. Our planner employs a novel motion model that captures the entire rigid robot as well as the obstacle geometry and ensures non-penetration between the surfaces due to the imposed constraint. We perform thorough comparative studies with the state-of-the-art, which demonstrate improved performance. Extensive simulation and hardware experiments validate our claim of generating continuous and reactive motion plans at 1 kHz for modern collaborative robots with constant minimal parameters.
