腿式机器人结合感知与自适应算法,提升行星探测灵活性与科学效率。
Legged Autonomous Surface Science In Analogue Environments (LASSIE): Making Every Robotic Step Count in Planetary Exploration
- 用腿式机器人直接接触地形,获取土壤力学数据以指导探索路径。
- 实测显示该方法显著提升复杂地形通过能力,揭示地质演化关键因素。
- 类人决策算法让机器人可动态调整采样策略,适合与科学家协同工作。
当前行星表面探测受限于轮式机器人在复杂地形中的通行能力,以及预设数据采集计划的灵活性不足。本文提出两项新方法:(i) 高机动性腿式机器人通过直接与地表交互,获取丰富的地形力学信息以指导探索;(ii) 受人类启发的数据采集算法使机器人能基于实时地面传感数据推理科学假设,并动态调整探索优先级。通过实验室测试与两次行星模拟环境的实地部署验证,证明腿式机器人测量土壤力学性能的能力显著提升复杂地形通过性。结合成分、热学性质及颗粒大小等其他地质属性,土壤力学数据揭示了地质环境形成与演化的关键驱动因素。同时,类人算法使机器人成为可协同工作的科学伙伴,支持更灵活、自适应的数据采集。本方法拓展了可探索的行星环境范围,通过人机协同系统实现更高的科学回报。
原文摘要 · Abstract (English)
The ability to efficiently and effectively explore planetary surfaces is currently limited by the capability of wheeled rovers to traverse challenging terrains, and by pre-programmed data acquisition plans with limited in-situ flexibility. In this paper, we present two novel approaches to address these limitations: (i) high-mobility legged robots that use direct surface interactions to collect rich information about the terrain's mechanics to guide exploration; (ii) human-inspired data acquisition algorithms that enable robots to reason about scientific hypotheses and adapt exploration priorities based on incoming ground-sensing measurements. We successfully verify our approach through lab work and field deployments in two planetary analog environments. The new capability for legged robots to measure soil mechanical properties is shown to enable effective traversal of challenging terrains. When coupled with other geologic properties (e.g., composition, thermal properties, and grain size data etc), soil mechanical measurements reveal key factors governing the formation and development of geologic environments. We then demonstrate how human-inspired algorithms turn terrain-sensing robots into teammates, by supporting more flexible and adaptive data collection decisions with human scientists. Our approach therefore enables exploration of a wider range of planetary environments and new substrate investigation opportunities through integrated human-robot systems that support maximum scientific return.
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