软体外翻机器人可运送重达1.5kg的物体,穿行微小缝隙并跨越1.15米空隙。
Transport and Delivery of Objects with a Soft Everting Robot
- 利用软体外翻机器人体内空间运输物体,通过模型预测负载影响与滑移风险。
- 实测可运送1.5kg重物,穿过仅0.01cm间隙的孔洞,完成135度转向。
- 适合救援场景中在废墟等复杂环境中递送物资,如水瓶或工具。
软体外翻机器人相比传统刚性机器人具有更强灵巧性、更优环境交互能力及在不可预测环境中安全导航的优势。尽管其在探索类任务中已有广泛应用,但关于其运载和部署负载的能力研究较少,以往工作多聚焦于传感器与工具的集成。本研究分析了软体外翻机器人如何通过自身内部空间运送更大更重的负载,评估可运输物体类型及能穿越的地形特征。基于现有模型,提出量化负载对机器人伸展与自支撑影响的方法,并建立负载滑移预测模型。实验测试了多种形状、尺寸与重量的负载,在多个任务中表现:转向、垂直运输、穿孔、跨空隙。结果表明,该机器人可运输最大1.5kg的物体,通过最小0.01cm间隙的圆形开口,实现最高135度离散转向,并跨越最长1.15m的无支撑间隙。
原文摘要 · Abstract (English)
Soft everting robots present significant advantages over traditional rigid robots, including enhanced dexterity, improved environmental interaction, and safe navigation in unpredictable environments. While soft everting robots have been widely demonstrated for exploration type tasks, their potential to move and deploy payloads in such tasks has been less investigated, with previous work focusing on sensors and tools for the robot. Leveraging the navigation capabilities, and deployed body, of the soft everting robot to deliver payloads in hazardous areas, e.g. carrying a water bottle to a person stuck under debris, would represent a significant capability in many applications. In this work, we present an analysis of how soft everting robots can be used to deploy larger, heavier payloads through the inside of the robot. We analyze both what objects can be deployed and what terrain features they can be carried through. Building on existing models, we present methods to quantify the effects of payloads on robot growth and self-support, and develop a model to predict payload slip. We then experimentally quantify payload transport using soft everting robot with a variety of payload shapes, sizes, and weights and though a series of tasks: steering, vertical transport, movement through holes, and movement across gaps. Overall, the results show that we can transport payloads in a variety of shapes and up to 1.5kg in weight and that we can move through circular apertures with as little as 0.01cm clearance around payloads, carry out discrete turns up to 135 degrees, and move across unsupported gaps of 1.15m in length.
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