Title
Development of a Small-Sized Quadruped Robotic Rat Capable of Multimodal Motions
Abstract
Legged robots are very promising for use in real-world applications, but their operation in narrow spaces is still challenging. One solution for enhancing their environmental adaptability is to design a small-sized biomimetic robot capable of performing multiple motions. By capturing a decent representation of an actual rat ( <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">rattus norvegicus</i> ), we developed a small-sized quadruped robotic rat (SQuRo), which includes four limbs and one flexible spine. On the basis of the extracted key movement joints, SQuRo was subtly designed with a relatively elongated slim body (aspect ratio: 3.42) and smaller weight (220 g) compared with quadruped robots of the same scale. Accordingly, we propose a control framework for multimodal motion planning, and the appropriate control parameters were tuned through optimization with consideration to the stability and actuation limits. The results obtained through a series of experimental tests reveal that SQuRo achieves a superior motion performance compared with existing state-of-the-art small-sized quadruped robots. Remarkably, SQuRo has an extremely small turning radius (0.48 BL) and strong payload capacity (200 g), and it can recover from falls.
Year
DOI
Venue
2022
10.1109/TRO.2022.3159188
IEEE Transactions on Robotics
Keywords
DocType
Volume
Biologically inspired robots,biomimetics,motion control,small-sized quadruped robots
Journal
38
Issue
ISSN
Citations 
5
1552-3098
0
PageRank 
References 
Authors
0.34
16
7
Name
Order
Citations
PageRank
Qing Shi197.73
Junhui Gao200.34
Shengjie Wang300.34
Xiaolong Quan400.34
Guanglu Jia512.38
Qiang Huang626691.95
Toshio Fukuda72723818.58