无系绳亚厘米级飞行机器人。

Untethered subcentimeter flying robots.

作者信息

Sui Fanping, Yue Wei, Behrouzi Kamyar, Gao Yuan, Mueller Mark, Lin Liwei

机构信息

Berkeley Sensor and Actuator Center, University of California at Berkeley, Berkeley, CA 94720, USA.

Mechanical Engineering Department, University of California at Berkeley, Berkeley, CA 94720, USA.

出版信息

Sci Adv. 2025 Mar 28;11(13):eads6858. doi: 10.1126/sciadv.ads6858.

DOI:10.1126/sciadv.ads6858

PMID:40153508

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11952086/

Abstract

The miniaturization of insect-scale flying robots with untethered flights is extremely challenging as the tradeoff between mass and power becomes problematic. Here, a subcentimeter rotating-wing robot of 21 mg in weight and 9.4 mm in wingspan driven by a single-axis alternating magnetic field has accomplished navigable flights. This artificial flying robot is the lightest and smallest to realize untethered and controllable aerial travels including hovering, collision recovery, and route adjustments. Experimentally, it has achieved a high aerodynamic efficacy with a measured lift-to-drag ratio of 0.7 and lift-to-flying power ratio of 7.2 × 10 N/W at a Reynolds number of ~2500. The wireless driving mechanism, system operation principle, and flight characteristics can be further optimized for the advancement and miniaturization of subcentimeter scale flying robots.

摘要

实现无绳飞行的昆虫尺度微型飞行机器人极具挑战性，因为质量与动力之间的权衡成为难题。在此，一个由单轴交变磁场驱动、重量为21毫克、翼展为9.4毫米的亚厘米级旋转翼机器人完成了可导航飞行。这个人工飞行机器人是实现无绳且可控空中飞行（包括悬停、碰撞恢复和路线调整）的最轻、最小的机器人。通过实验，它在雷诺数约为2500时实现了高空气动力学效率，测得的升阻比为0.7，升力与飞行功率比为7.2×10 N/W。无线驱动机制、系统运行原理和飞行特性可进一步优化，以推动亚厘米级飞行机器人的发展和小型化。