敵対的ゲーム理論による多指ハンドの把持合成アルゴリズム
Adversarial Game-Theoretic Algorithm for Dexterous Grasp Synthesis
把持生成を2人ゲームとして定式化し、ロボット側と物体の脱出運動を敵対的に競わせることで、外乱に強い多指ハンドの把持姿勢を高速に合成する手法を提案した。
詳しい要約
1. どんなもの?
2. 先行研究と比べてどこがすごい?
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著者: Yu Chen, Botao He, Yuemin Mao, Arthur Jakobsson, Jeffrey Ke, Yiannis Aloimonos, Guanya Shi, Howie Choset, Jiayuan Mao, Jeffrey Ichnowski
分類: cs.RO
原文アブストラクト
For many complex tasks, multi-finger robot hands are poised to revolutionize how we interact with the world, but reliably grasping objects remains a significant challenge. We focus on the problem of synthesizing grasps for multi-finger robot hands that, given a target object's geometry and pose, computes a hand configuration. Existing approaches often struggle to produce reliable grasps that sufficiently constrain object motion, leading to instability under disturbances and failed grasps. A key reason is that during grasp generation, they typically focus on resisting a single wrench, while ignoring the object's potential for adversarial movements, such as escaping. We propose a new grasp-synthesis approach that explicitly captures and leverages the adversarial object motion in grasp generation by formulating the problem as a two-player game. One player controls the robot to generate feasible grasp configurations, while the other adversarially controls the object to seek motions that attempt to escape from the grasp. Simulation experiments on various robot platforms and target objects show that our approach achieves a success rate of 75.78%, up to 19.61% higher than the state-of-the-art baseline. The two-player game mechanism improves the grasping success rate by 27.40% over the method without the game formulation. Our approach requires only 0.28-1.04 seconds on average to generate a grasp configuration, depending on the robot platform, making it suitable for real-world deployment. In real-world experiments, our approach achieves an average success rate of 85.0% on ShadowHand and 87.5% on LeapHand, which confirms its feasibility and effectiveness in real robot setups.
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