A wireless controlled robotic insect with ultrafast untethered running speeds

Zhiwei Liu, Wencheng Zhan, Xinyi Liu, Yangsheng Zhu, Mingjing Qi, Jiaming Leng, Lizhao Wei, Shousheng Han, Xiaoming Wu () and Xiaojun Yan ()
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Zhiwei Liu: Beihang University
Wencheng Zhan: Beihang University
Xinyi Liu: Beihang University
Yangsheng Zhu: Beihang University
Mingjing Qi: Beihang University
Jiaming Leng: Beihang University
Lizhao Wei: Beihang University
Shousheng Han: Tsinghua University
Xiaoming Wu: Tsinghua University
Xiaojun Yan: Beihang University

Nature Communications, 2024, vol. 15, issue 1, 1-15

Abstract: Abstract Running speed degradation of insect-scale (less than 5 cm) legged microrobots after carrying payloads has become a bottleneck for microrobots to achieve high untethered locomotion performance. In this work, we present a 2-cm legged microrobot (BHMbot, BeiHang Microrobot) with ultrafast untethered running speeds, which is facilitated by the complementary combination of bouncing length and bouncing frequency in the microrobot’s running gait. The untethered BHMbot (2-cm-long, 1760 mg) can achieve a running speed of 17.5 BL s−1 and a turning centripetal acceleration of 65.4 BL s−2 at a Cost of Transport of 303.7 and a power consumption of 1.77 W. By controlling its two front legs independently, the BHMbot demonstrates various locomotion trajectories including circles, rectangles, letters and irregular paths across obstacles through a wireless control module. Such advancements enable the BHMbot to carry out application attempts including sound signal detection, locomotion inside a turbofan engine and transportation via a quadrotor.

Date: 2024
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DOI: 10.1038/s41467-024-47812-5

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