Self-Reconfiguration Sequence of Lattice Modular Soft Robots

doi:10.16183/j.cnki.jsjtu.2020.005

Abstract

Abstract:

A lattice self-reconfigurable modular soft robot based on the expansion-contraction motion rule is designed, which is composed of several soft modules, each of which is composed of a silica gel main body with positive hexahedron configuration and a master-slave docking surface. The internal bulged design makes it have a good expansion performance. The master-slave docking surface is composed of an iron disk and a suction disk type electromagnet connected with the silica gel main body by thread composition. Based on the relationship between the volume change of the soft module and the internal pressure, the expansion of the soft module is analyzed. The mapping relationship between the inflation pressure and the expansion of soft module is established. Besides, the inflation pressure required for the connection of adjacent two soft modules is obtained. Each soft module can expand 1.5 times under the working pressure of 30 kPa, and the docking and separation of two adjacent soft modules are realized by using the electromagnet connection and the expansion-contraction motion rules of soft modules. The self-reconfiguration of the modular soft robot can be realized by the sequential docking and separation of multiple adjacent modules. The feasibility of self-reconfiguration of soft robot is verified by the self-reconfiguration experiment.

Key words: soft robot, modularization, self-reconfiguration sequence

CLC Number:

TP242

LIU Jiapeng, WANG Jiangbei, DING Ye, FEI Yanqiong. Self-Reconfiguration Sequence of Lattice Modular Soft Robots[J]. Journal of Shanghai Jiao Tong University, 2021, 55(2): 111-116.

Figures/Tables 9

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References 11

[1]	侯涛刚，王田苗，苏浩鸿，等. 软体机器人前沿技术及应用热点[J]. 科技导报，2017, 35(18): 20-28.
	HOU Taogang, WANG Tianmiao, SU Haohong, et al. Review on soft-bodied robots[J]. Science & Technology Review, 2017, 35(18): 20-28.
[2]	李卓雨. 软体机器人的发展应用与展望[J]. 科技传播，2018, 10(23): 109-110.
	LI Zhuoyu. Development, application and prospect of soft robots[J]. Public Communication of Science & Technology, 2018, 10(23): 109-110.
[3]	GERMANN J, DOMMER M, PERICET-CAMARA R, et al. Active connection mechanism for soft modular robots[J]. Advanced Robotics, 2012, 26(7): 785-798.
[4]	KWOK S W, MORIN S A, MOSADEGH B, et al. Magnetic assembly of soft robots with hard components[J]. Advanced Functional Materials, 2014, 24(15): 2180-2187.
[5]	NEMITZ M P, MIHAYLOV P, BARRACLOUGH T W, et al. Using voice coils to actuate modular soft robots: Wormbot, an example[J]. Soft Robotics, 2016, 3(4): 198-204.
[6]	VERGARA A, LAU Y S, MENDOZA-GARCIA R F, et al. Soft modular robotic cubes: Toward replicating morphogenetic movements of the embryo[J]. PLOS One, 2017, 12(1): 1-17.
[7]	ZOU J, LIN Y Q, JI C, et al. A reconfigurable omnidirectional soft robot based on caterpillar locomotion[J]. Soft Robotics, 2018, 5(2): 164-174.
[8]	王羽麟. 可重构软体模块化机器人研制及其运动控制研究[D]. 哈尔滨：哈尔滨工业大学，2018.
	WANG Yulin. Development and motion control strategy research of soft reconfigurable modular robots[D]. Harbin: Harbin Institute of Technology, 2018.
[9]	RUS D, VONA M. A physical implementation of the self-reconfiguring crystalline robot[C]∥IEEE International Conference on Robotics and Automation. Symposia Proceedings. Piscataway, NJ, USA: IEEE, 2000: 1726-1733.
[10]	钱家骊. 电磁铁吸力公式的讨论[J]. 电工技术杂志，2001, 20(1): 59-60.
	QIAN Jiali. Discussion on the suction formula of electromagnet[J]. Electrotechnical Journal, 2001, 20(1): 59-60.
[11]	陈安科. 线性电磁力控制系统试验和研究[D]. 重庆：重庆大学，2012.
	CHEN Anke. Research on the control system of linear electromagnetic force[D]. Chongqing: Chongqing University, 2012.