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arXiv 2507.02438cs.ROcs.HCcs.SYeess.SY
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最小干预共享控制与非凸约束下的安全保证

Minimal Intervention Shared Control with Guaranteed Safety under Non-Convex Constraints

Aalto University(阿alto大学)

Shivam Chaubey, Francesco Verdoja, Shankar Deka, Ville Kyrki

AI总结:

本文提出了一种考虑约束的辅助控制器,通过在线计算控制动作,确保递归可行性、严格约束满足和最小偏离用户意图,适用于非凸约束的现实场景。

摘要:

共享控制结合人类意图与自主决策。在低层,主要目标是无论用户如何输入系统,都保持安全。然而,现有共享控制方法,如模型预测控制、控制屏障函数或基于学习的控制,常面临可行性、可扩展性和混合约束的挑战。为此,我们提出了一种考虑约束的辅助控制器,通过在线计算控制动作,确保递归可行性、严格约束满足和最小偏离用户意图。它还适用于现实世界中常见的非凸约束结构。我们利用鲁棒受控不变集确保递归可行性,并采用混合整数二次规划公式处理非凸约束。通过包含66名参与者的大型用户研究(共享控制研究中最广泛的研究)验证了该方法,使用模拟环境评估任务负荷、信任和感知控制,以及性能。结果在所有这些方面都显示出一致的改进,而不会牺牲安全性和用户意图。此外,一个在机械臂上的现实世界实验展示了框架在有界扰动下的适用性,确保安全和无碰撞操作。

英文摘要:

Shared control combines human intention with autonomous decision-making. At the low level, the primary goal is to maintain safety regardless of the user's input to the system. However, existing shared control methods-based on, e.g., Model Predictive Control, Control Barrier Functions, or learning-based control-often face challenges with feasibility, scalability, and mixed constraints. To address these challenges, we propose a Constraint-Aware Assistive Controller that computes control actions online while ensuring recursive feasibility, strict constraint satisfaction, and minimal deviation from the user's intent. It also accommodates a structured class of non-convex constraints common in real-world settings. We leverage Robust Controlled Invariant Sets for recursive feasibility and a Mixed-Integer Quadratic Programming formulation to handle non-convex constraints. We validate the approach through a large-scale user study with 66 participants-one of the most extensive in shared control research-using a simulated environment to assess task load, trust, and perceived control, in addition to performance. The results show consistent improvements across all these aspects without compromising safety and user intent. Additionally, a real-world experiment on a robotic manipulator demonstrates the framework's applicability under bounded disturbances, ensuring safety and collision-free operation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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