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无腿软体机器人能够快速、连续且受控地跳跃。

Legless soft robots capable of rapid, continuous, and steered jumping.

机构信息

State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing, 400044, China.

School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China.

出版信息

Nat Commun. 2021 Dec 7;12(1):7028. doi: 10.1038/s41467-021-27265-w.

Abstract

Jumping is an important locomotion function to extend navigation range, overcome obstacles, and adapt to unstructured environments. In that sense, continuous jumping and direction adjustability can be essential properties for terrestrial robots with multimodal locomotion. However, only few soft jumping robots can achieve rapid continuous jumping and controlled turning locomotion for obstacle crossing. Here, we present an electrohydrostatically driven tethered legless soft jumping robot capable of rapid, continuous, and steered jumping based on a soft electrohydrostatic bending actuator. This 1.1 g and 6.5 cm tethered soft jumping robot is able to achieve a jumping height of 7.68 body heights and a continuous forward jumping speed of 6.01 body lengths per second. Combining two actuator units, it can achieve rapid turning with a speed of 138.4° per second. The robots are also demonstrated to be capable of skipping across a multitude of obstacles. This work provides a foundation for the application of electrohydrostatic actuation in soft robots for agile and fast multimodal locomotion.

摘要

跳跃是扩展导航范围、克服障碍和适应非结构化环境的重要运动功能。从这个意义上说,连续跳跃和方向可调节性对于具有多模态运动的地面机器人来说可能是必不可少的特性。然而,只有少数软跳跃机器人能够实现快速连续跳跃和受控转弯运动以跨越障碍物。在这里,我们提出了一种基于软电静弯曲致动器的电静液压驱动有系绳无腿软跳跃机器人,它能够实现快速、连续和转向跳跃。这个 1.1g 和 6.5cm 的有系绳软跳跃机器人能够实现 7.68 个体高的跳跃高度和每秒 6.01 个体长的连续向前跳跃速度。结合两个致动器单元,它可以实现每秒 138.4°的快速转弯。机器人还被证明能够跳过多个障碍物。这项工作为电静液压致动在软机器人中的应用提供了基础,以实现敏捷和快速的多模态运动。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ceb2/8651723/1640d3703717/41467_2021_27265_Fig1_HTML.jpg

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