arXiv:2409.06864cs.RO2024-09被引 16

让机器人动态调整路径,兼顾安全、舒适与效率。

PRO-MIND: Proximity and Reactivity Optimisation of robot Motion to tune safety limits, human stress, and productivity in INDustrial settings

  • 基于人类注意力与心理负荷优化机器人运动轨迹
  • 降低操作员心率变异和急促动作,减少压力
  • 适配个体差异,实时响应注意力变化

尽管工业协作机器人取得显著进展,但其潜力仍受限于人机安全与生产效率之间的平衡难题。为此,我们提出PRO-MIND框架,通过捕捉人机协同工作中的关键生理数据,动态优化机器人运动轨迹。该方法利用心率变异性与急促动作等信号估算人类心理负荷,进而实时调节安全区域并重规划路径,以提升操作者舒适度与任务终止条件的合理性。同时,采用多目标优化策略,根据当前心理-生理状态调整机器人轨迹执行时间与平滑性,借助B样条曲线保持运动连续性与可预测性,从而改善人机协作体验。在两个真实工业场景下的评估表明,该框架能有效降低操作员工作负荷与压力水平,保障安全的同时提升人机协同效率。其优势还包括对个体差异的适应能力以及对注意力、心理负荷和压力波动的敏感响应。

原文摘要 · Abstract (English)

Despite impressive advancements of industrial collaborative robots, their potential remains largely untapped due to the difficulty in balancing human safety and comfort with fast production constraints. To help address this challenge, we present PRO-MIND, a novel human-in-the-loop framework that leverages valuable data about the human co-worker to optimise robot trajectories. By estimating human attention and mental effort, our method dynamically adjusts safety zones and enables on-the-fly alterations of the robot path to enhance human comfort and optimal stopping conditions. Moreover, we formulate a multi-objective optimisation to adapt the robot's trajectory execution time and smoothness based on the current human psycho-physical stress, estimated from heart rate variability and frantic movements. These adaptations exploit the properties of B-spline curves to preserve continuity and smoothness, which are crucial factors in improving motion predictability and comfort. Evaluation in two realistic case studies showcases the framework's ability to restrain the operators' workload and stress and to ensure their safety while enhancing human-robot productivity. Further strengths of PRO-MIND include its adaptability to each individual's specific needs and sensitivity to variations in attention, mental effort, and stress during task execution.

人机协作动态路径心理负荷工业机器人

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