四足歩行ロボットによる固有感覚的地形マッピング:月の永久影領域探査に向けて
Towards Proprioceptive Terrain Mapping with Quadruped Robots for Exploration in Planetary Permanently Shadowed Regions
月の永久影領域探査のため、四足ロボットが歩行中の内部センサ情報から地形の高さ・足滑り・エネルギーコスト・安定余裕を推定し、2.5Dグリッドマップに統合する手法を提案し、月環境シミュレータで評価した。
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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: Alberto Sanchez-Delgado, João Carlos Virgolino Soares, Victor Barasuol, Claudio Semini
分類: cs.RO
原文アブストラクト
Permanently Shadowed Regions (PSRs) near the lunar poles are of interest for future exploration due to their potential to contain water ice and preserve geological records. Their complex, uneven terrain favors the use of legged robots, which can traverse challenging surfaces while collecting in-situ data, and have proven effective in Earth analogs, including dark caves, when equipped with onboard lighting. While exteroceptive sensors like cameras and lidars can capture terrain geometry and even semantic information, they cannot quantify its physical interaction with the robot, a capability provided by proprioceptive sensing. We propose a terrain mapping framework for quadruped robots, which estimates elevation, foot slippage, energy cost, and stability margins from internal sensing during locomotion. These metrics are incrementally integrated into a multi-layer 2.5D gridmap that reflects terrain interaction from the robot's perspective. The system is evaluated in a simulator that mimics a lunar environment, using the 21 kg quadruped robot Aliengo, showing consistent mapping performance under lunar gravity and terrain conditions.
