arXiv:2605.23568cs.ROcs.SY2026-05

用视觉触觉传感器自动生成控制阈值,实现脆弱容器的实时防滑防压控制。

TactileReflex: Noise-Statistics-Driven Vision-Tactile Reflex Control for Force-Sensitive Manipulation

论文配图:TactileReflex: Noise-Statistics-Driven Vision-Tactile Reflex Control for Force-Sensitive Manipulation
图 1 · 摘自论文原文
  • 基于传感器噪声特性自动校准控制阈值,无需手动调参或物理模型
  • 三通道闭环控制在12Hz下有效防止容器变形(5/5成功)
  • 可直接嵌入高级操作流程,适合高危柔性物体操控场景

操作易碎柔性容器(如装有液体的塑料杯)需在极窄力矩范围内实时调节抓握力:力不足会滑落,力过大则永久变形。现有方法难以实现此类力敏感操作。我们提出一种基于噪声统计特性的校准驱动反射控制范式,结合视觉触觉传感:通过简短静态保持-卸载协议分析传感器固有噪声特征,直接推导全部控制器阈值,避免外部力校准、试错调参或材料特异性物理模型。实例化该范式,我们构建TactileReflex——一个三通道闭环控制器,从双视触觉传感器中提取三个图像级代理量:剪切强度(S_y)、接触强度(F_n)和压力中心(C),以约12Hz频率驱动优先级反射通道,分别实现防滑、重量自适应释放与力保护。每个通道通过噪声导出的阈值直接闭环控制其代理量。消融实验表明,仅完整三通道系统能防止容器不可逆变形(5/5成功,部分配置最多1/5)。在动态倒液任务中,固定力度基线在10次尝试中全部失败(因姿态漂移),而TactileReflex在两种水量下均实现9/10成功。作为自包含且可解释的控制器,TactileReflex可作为安全层嵌入高层操作流程,包括无触觉远程操作与视觉-语言-动作(VLA)策略。

原文摘要 · Abstract (English)

Manipulating fragile deformable containers, such as disposable plastic cups filled with liquid, demands real-time grip-force adaptation within an extremely narrow force margin: insufficient force causes slip, while excessive force irreversibly deforms the thin wall. Existing approaches struggle to achieve such force-sensitive manipulation tasks. We propose a noise-statistics-based calibration-driven reflex control paradigm with vision-based tactile sensing: by analyzing the sensor's intrinsic noise characteristics (via a brief static-hold-and-unload protocol), we directly derive all controller thresholds, eliminating external force calibration, trial-and-error manual tuning, or material-specific physical models. Instantiating this paradigm, we present TactileReflex, a three-channel closed-loop controller that extracts three image-level proxies, shear intensity ($S_y$), contact intensity ($F_n$), and center of pressure ($C$), from dual visuo-tactile sensors and drives prioritized reflex channels at ~12 Hz for slip suppression, weight-adaptive release, and force protection. Each channel closes the loop directly on its proxy via noise-derived thresholds. Ablation demonstrates that only the full three-channel system is able to prevent irreversible container deformation (5/5 success vs. at most 1/5 for partial configurations). In a dynamic pouring task, fixed-effort baselines fail in all 10 attempts due to pose drift, while TactileReflex achieves 9/10 success across two water volumes. As a self-contained and interpretable controller, TactileReflex can serve as a plug-and-play safety layer beneath high-level manipulation pipelines, including haptic-free VR teleoperation and vision-language-action (VLA) policies.

触觉控制柔性操作闭环控制多模态感知

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