根据用户和场景个性化调整延迟操控中的运动补偿,提升操作精度
Spatiotemporal Context-dependent Personalized Movement Compensation in Delayed Telemanipulation

- 为每位用户定制延迟、方向、距离相关的运动缩放参数
- 实验显示可减少20%-25%的越界误差,长延迟下效果更明显
- 适合需高精度远程操作的医疗机器人等场景
通信延迟是遥操作中的核心挑战,会破坏视觉运动协调并降低任务精度。运动缩放是应对延迟导致越界的有效方法,但传统方法使用统一增益,忽略个体与情境差异。本文提出一种以人为中心的方法,为每位参与者拟合延迟、方向和距离特异的缩放参数。20名参与者在虚拟仿真器中完成带延迟的伸展任务,缩放增益通过最小化各条件下模拟中的平均越界量来计算。在仿真和手术机器人上评估辅助效果,采用越界、终点误差、轨迹平滑性、动作经济性和综合误差-时间指标进行多延迟、多距离、多方向测试。结果表明,运动缩放显著优于无辅助情况,关键指标提升达20%-25%。在长延迟下效果最显著,个性化策略在中等延迟、短距离向内伸展时进一步提升精度。结果表明个性化缩放是构建更自适应框架的基础,可结合上下文信息提升遥操作的安全性与精确度。
原文摘要 · Abstract (English)
Communication delay remains a central challenge in telerobotics, where it disrupts visuomotor coordination and reduces task precision. Motion scaling is an effective countermeasure to delay-induced overshoot, yet typical deployments rely on uniform gains that neglect individual and contextual variability. We propose a human-centered method that fits personalized delay-, direction-, and distance-specific scaling parameters for each participant. We conducted experiments with twenty participants who performed delayed reaching tasks in a virtual simulator. Scaling gains were computed to minimize mean overshoot in simulation in each combination of experimental conditions. Evaluation was done in simulation and on a telesurgical robot to evaluate assistance benefits. Performance was assessed across multiple delays, distances, and movement directions using overshoot, endpoint error, trajectory smoothness, economy of motion, and a composite error-time metric. Motion scaling consistently improved performance relative to unassisted trials, yielding up to 20-25% performance gains in key metrics. Effects were most pronounced at longer delays. Personalization demonstrated additional accuracy benefits for inward reaching at a short distance under moderate delay. The results highlight the potential of personalized scaling as a foundation for more adaptive frameworks that integrate contextual information to improve the safety and precision of teleoperated procedures.
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