多机器人长期任务中,自适应搜索+动态充电调度,兼顾信息获取与续航。
Adaptive Ergodic Search with Energy-Aware Scheduling for Persistent Multi-Robot Missions
- 用动态信息分布指导探索,聚焦高不确定性区域
- 在线调度支持多机共享移动充电桩,持续运行不中断
- 无需预设计划,可应对充电位误差和节点故障
自主机器人越来越多地用于长期信息采集任务,面临两大挑战:在时空变化环境中规划有信息量的轨迹,以及在能源限制下实现持久运行。本文提出统一框架mEclares,通过自适应遍历搜索与能量感知调度解决这两个问题。首先,基于过程不确定性建模真实世界的随机时空环境,利用‘清晰度’这一指标刻画无观测时信息衰减,构建目标信息空间分布(TISD),引导探索;其次,提出Robustmesch(Rmesch)在线调度方法,使可充电机器人共享单一移动充电站实现持续作业。相比以往工作,该方法不依赖预设计划、固定或专用充电站,也不简化机器人动力学。调度器支持一般非线性模型,考虑充电站位置估计不确定性,并能处理中心节点故障。框架通过真实硬件实验验证,特定假设下提供可行性保障。
原文摘要 · Abstract (English)
Autonomous robots are increasingly deployed for long-term information-gathering tasks, which pose two key challenges: planning informative trajectories in environments that evolve across space and time, and ensuring persistent operation under energy constraints. This paper presents a unified framework, mEclares, that addresses both challenges through adaptive ergodic search and energy-aware scheduling in multi-robot systems. Our contributions are two-fold: (1) we model real-world variability using stochastic spatiotemporal environments, where the underlying information evolves unpredictably due to process uncertainty. To guide exploration, we construct a target information spatial distribution (TISD) based on clarity, a metric that captures the decay of information in the absence of observations and highlights regions of high uncertainty; and (2) we introduce Robustmesch (Rmesch), an online scheduling method that enables persistent operation by coordinating rechargeable robots sharing a single mobile charging station. Unlike prior work, our approach avoids reliance on preplanned schedules, static or dedicated charging stations, and simplified robot dynamics. Instead, the scheduler supports general nonlinear models, accounts for uncertainty in the estimated position of the charging station, and handles central node failures. The proposed framework is validated through real-world hardware experiments, and feasibility guarantees are provided under specific assumptions.
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