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首页> 外文期刊>Gait & posture >Minimal predicted distance: A common metric for collision avoidance during pairwise interactions between walkers
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Minimal predicted distance: A common metric for collision avoidance during pairwise interactions between walkers

机译：最小预测距离：步行者之间成对互动时避免碰撞的常用指标

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This study investigated collision avoidance between two walkers by focusing on the conditions that lead to avoidance manoeuvres in locomotor trajectories. Following the hypothesis of a reciprocal interaction, we suggested a mutual variable as a continuous function of the two walkers' states, denoted minimum predicted distance (MPD). This function predicts the risk of collision, and its evolution over time captures the motion adaptations performed by the walkers. By groups of two, 30 walkers were assigned locomotion tasks which lead to potential collisions. Results showed that walkers adapted their motions only when required, i.e., when . MPD is too low (<1. m). We concluded that walkers are able (i) to accurately estimate their reciprocal distance at the time the crossing will occur, and (ii) to mutually adapt this distance. Furthermore, the study of . MPD evolution showed three successive phases in the avoidance interaction: observation where . MPD(t) is constant, reaction where . MPD(t) increases to acceptable values by adapting locomotion and regulation where . MPD(t) reaches a plateau and slightly decreases. This final phase demonstrates that collision avoidance is actually performed with anticipation. Future work would consist in inspecting individual motion adaptations and relating them with the variations of . MPD.
机译：这项研究着眼于导致运动轨迹回避回避的条件，研究了两个助行器之间的回避。根据交互作用的假设，我们提出了一个互变量作为两个步行者状态的连续函数，表示为最小预测距离（MPD）。该功能可预测发生碰撞的风险，其随着时间的演变可捕获步行者进行的运动适应。由两个人组成的小组，为30个步行者分配了运动任务，这导致了潜在的碰撞。结果表明，步行者仅在需要时，即在时才适应运动。 MPD太低（<1。m）。我们得出的结论是，步行者能够（i）准确估计他们将要穿越的时间的相互距离，并且（ii）可以相互适应该距离。此外，对的研究。 MPD演变在回避相互作用中显示出三个连续的阶段：观察。 MPD（t）是常数，反应式中。 MPD（t）通过调整运动和调节来增加到可接受的值。 MPD（t）达到平稳状态并略有下降。这个最后阶段表明，避免碰撞实际上是在预期的情况下执行的。未来的工作将包括检查单个运动适应性并将它们与的变化相关联。 MPD。

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