用数据驱动方法实现可变形拭子的实时精准操控,提升食品安全检测效率。
Data-Driven Contact-Aware Control Method for Real-Time Deformable Tool Manipulation: A Case Study in the Environmental Swabbing
- 基于状态自适应的柯尔莫哥洛夫算子线性化控制,处理工具形变与接触力变化。
- 实测显示接触角度估计误差小于5°,轨迹跟踪精度达±2mm,力控稳定可靠。
- 适合需要高精度触觉反馈的工业检测、医疗操作等场景应用。
可变形物体操作(DOM)因建模困难仍是机器人领域的重要挑战。可变形工具操作(DTM)进一步引入了机器人与环境间的额外不确定性。尽管人类能凭借触觉和经验轻松操控可变形工具,机器人系统却难以保持稳定与精度。为此,本文提出一种新型状态自适应柯尔莫哥洛夫算子线性二次调节器(SA-KLQR)控制框架,用于实时可变形工具操控,并以食品卫生检测中的环境拭子采样为案例进行验证。该方法利用基于柯尔莫哥洛夫算子的控制策略,将非线性动态线性化,并自适应地应对工具形变与接触力的状态依赖变化。结合触觉反馈系统,动态估算并调节拭子角度、接触压力及表面覆盖率,确保符合食品安全标准。此外,嵌入式传感器接触垫实时监测力分布,有效抑制工具偏转与形变,提升动态交互中的稳定性。实验结果验证了该方法在接触角度估计、轨迹跟踪与力调控方面的有效性:角度估计误差小于5°,轨迹跟踪精度达±2mm,力控响应时间低于100ms。所提框架显著提升了可变形工具操作的精度、适应性与实时控制能力,弥合了数据驱动学习与最优控制在机器人交互任务中的差距。
原文摘要 · Abstract (English)
Deformable Object Manipulation (DOM) remains a critical challenge in robotics due to the complexities of developing suitable model-based control strategies. Deformable Tool Manipulation (DTM) further complicates this task by introducing additional uncertainties between the robot and its environment. While humans effortlessly manipulate deformable tools using touch and experience, robotic systems struggle to maintain stability and precision. To address these challenges, we present a novel State-Adaptive Koopman LQR (SA-KLQR) control framework for real-time deformable tool manipulation, demonstrated through a case study in environmental swab sampling for food safety. This method leverages Koopman operator-based control to linearize nonlinear dynamics while adapting to state-dependent variations in tool deformation and contact forces. A tactile-based feedback system dynamically estimates and regulates the swab tool's angle, contact pressure, and surface coverage, ensuring compliance with food safety standards. Additionally, a sensor-embedded contact pad monitors force distribution to mitigate tool pivoting and deformation, improving stability during dynamic interactions. Experimental results validate the SA-KLQR approach, demonstrating accurate contact angle estimation, robust trajectory tracking, and reliable force regulation. The proposed framework enhances precision, adaptability, and real-time control in deformable tool manipulation, bridging the gap between data-driven learning and optimal control in robotic interaction tasks.
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