让机器人实现100%可靠插入柔性排线,靠的是模仿人类的感知与记忆机制。
Memory-updated-based Framework for 100% Reliable Flexible Flat Cables Insertion
- 通过三维触觉传感+贝叶斯记忆模块,实时评估插入状态并动态纠错。
- 可精准检测0.5毫米对齐误差,准确率达97.92%,最终实现100%成功率。
- 适合高可靠性要求的自动化装配场景,如电子制造、精密器件生产。
自动装配线已广泛替代人工,但柔性扁平电缆(FFC)插入因对反馈精度和动态响应要求极高,仍难以实现自动化,限制了全球约11%的工业产能。尽管已有视觉、触觉传感器和强化学习等方法尝试解决,但实现类人级高可靠性插入(即100%成功)仍是重大挑战。受人类插入行为启发——感知三维力、转化为物理概念、持续优化判断,本文提出一种新型框架:包含采集三维触觉数据的传感模块、将数据转化为有意义物理信号的感知模块,以及基于贝叶斯理论的记忆模块,用于可靠性估计与控制。该策略使机器人能准确评估自身物理状态,生成可靠状态估计并触发纠正动作。实验表明,该框架可以97.92%的准确率检测出0.5毫米对齐误差,并在多次迭代后实现所有测试中100%的成功率。本工作解决了复杂插入任务中感知与控制不可靠的问题,为全自动化生产线的发展指明方向。
原文摘要 · Abstract (English)
Automatic assembly lines have increasingly replaced human labor in various tasks; however, the automation of Flexible Flat Cable (FFC) insertion remains unrealized due to its high requirement for effective feedback and dynamic operation, limiting approximately 11% of global industrial capacity. Despite lots of approaches, like vision-based tactile sensors and reinforcement learning, having been proposed, the implementation of human-like high-reliable insertion (i.e., with a 100% success rate in completed insertion) remains a big challenge. Drawing inspiration from human behavior in FFC insertion, which involves sensing three-dimensional forces, translating them into physical concepts, and continuously improving estimates, we propose a novel framework. This framework includes a sensing module for collecting three-dimensional tactile data, a perception module for interpreting this data into meaningful physical signals, and a memory module based on Bayesian theory for reliability estimation and control. This strategy enables the robot to accurately assess its physical state and generate reliable status estimations and corrective actions. Experimental results demonstrate that the robot using this framework can detect alignment errors of 0.5 mm with an accuracy of 97.92% and then achieve a 100% success rate in all completed tests after a few iterations. This work addresses the challenges of unreliable perception and control in complex insertion tasks, highlighting the path toward the development of fully automated production lines.
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