arXiv:2503.20754cs.RO2025-03被引 5

轻量软臂无人机可空中抓取,靠气动变形实现高精度轨迹跟踪。

Flying Vines: Design, Modeling, and Control of a Soft Aerial Robotic Arm

  • 用充气软臂+小旋翼设计,实现低重、易收纳的空中机械臂。
  • 通过动态建模与轨迹优化,实现在高速下末端执行器精准跟踪。
  • 适合需要灵活避障和快速响应的空中作业场景。

空中机械臂旨在实现对难以到达区域的检测与环境交互。然而,多数空中机械臂采用大尺寸、高载重飞行器搭载笨重臂体。本文提出一种新型轻量化、可折叠的空中机械臂——‘飞藤’(flying vine),由小型机动四旋翼搭载一条柔软、可延展的充气臂构成。该软臂为欠驱动系统,末端位置通过耦合四旋翼-藤蔓动力学控制实现。本文提出飞藤的设计方案及一套建模与控制框架,用于跟踪期望的末端执行器轨迹。动态模型结合数据驱动方法,并引入双线性插值以处理时变动力学参数。利用轨迹优化规划四旋翼控制输入,实现期望的末端运动。实物原型实验表明,该框架使飞藤能够完成高速末端轨迹跟踪,为软式空中机械臂的动态操作奠定基础。

原文摘要 · Abstract (English)

Aerial robotic arms aim to enable inspection and environment interaction in otherwise hard-to-reach areas from the air. However, many aerial manipulators feature bulky or heavy robot manipulators mounted to large, high-payload aerial vehicles. Instead, we propose an aerial robotic arm with low mass and a small stowed configuration called a "flying vine". The flying vine consists of a small, maneuverable quadrotor equipped with a soft, growing, inflated beam as the arm. This soft robot arm is underactuated, and positioning of the end effector is achieved by controlling the coupled quadrotor-vine dynamics. In this work, we present the flying vine design and a modeling and control framework for tracking desired end effector trajectories. The dynamic model leverages data-driven modeling methods and introduces bilinear interpolation to account for time-varying dynamic parameters. We use trajectory optimization to plan quadrotor controls that produce desired end effector motions. Experimental results on a physical prototype demonstrate that our framework enables the flying vine to perform high-speed end effector tracking, laying a foundation for performing dynamic maneuvers with soft aerial manipulators.

空中机械臂软体机器人轨迹跟踪

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