可控三维运动的软体驱动器仿真与试验

doi:10.3901/JME.2018.21.011

机械工程学报 ›› 2018, Vol. 54 ›› Issue (21): 11-18.doi: 10.3901/JME.2018.21.011

可控三维运动的软体驱动器仿真与试验

谢哲新^1,2, 龚哲元¹, 王田苗¹, 文力¹

1. 北京航空航天大学机械工程及自动化学院北京 100191;
2. 北京航空航天大学沈元荣誉学院北京 100191

收稿日期:2017-11-15 修回日期:2018-06-25 出版日期:2018-11-05 发布日期:2018-11-05
通讯作者: 文力(通信作者),男,1983年出生,副教授,博士研究生导师,曾担任美国哈佛大学博士后研究员。主要研究方向为软体机器人、仿生机器人。相关研究成果获评《Nature》杂志研究亮点,获《Science》杂志撰文,英国BBC、美国《探索》杂志等报道。E-mail:liwen@buaa.edu.cn
作者简介:谢哲新,男,1996年出生,博士研究生。主要研究方向为软体机器人。E-mail:523288389@qq.com;龚哲元,男,1993年出生,硕士研究生。主要研究方向为软体机器人。E-mail:zheyuangong@163.com;王田苗,男,1960年出生,博士,教授,博士研究生导师,国家杰出青年基金获得者,教育部长江学者特聘教授。主要研究方向为工业机器人与嵌入式控制技术、仿生机器鱼推进机理、医疗外科机器人。发表论文70余篇,发明专利10余项,著作3部。E-mail:itm@buaa.edu.cn
基金资助:
国家自然科学基金资助项目（61633004，61403012）。

Simulation and Experiments of a Controllable Soft Spatial Fluidic Elastomer Manipulator

XIE Zhexin^1,2, GONG Zheyuan¹, WANG Tianmiao¹, WEN Li¹

1. School of Mechanical Engineering and Automation, Beihang University, Beijing 100191;
2. Shenyuan Honors College, Beihang University, Beijing 100191

Received:2017-11-15 Revised:2018-06-25 Online:2018-11-05 Published:2018-11-05

摘要/Abstract

摘要： 介绍一种多自由度，可以在空间内任意运动的三维软材料仿生驱动器。利用有限元分析软件对三维软体驱动器进行了设计优化，针对驱动器制作材料以及气腔截面形状、腔道壁厚进行了有限元仿真分析。通过软体驱动器结构仿真分析，结果表明半圆形腔道软体驱动器能提供更高的变形气压和刚度，而环形腔道则能给软体驱动器带来较低的变形气压和柔性。三维软体驱动器使用较高硬度材料、半圆形腔道能够在给定气压下获得更大的刚性及输出力；低硬度材料、较小壁厚的环形腔道能够在给定气压下获取更好的柔性和灵活性。根据仿真优化结论，制造出在低气压下灵活运动并具有一定载荷能力的软体驱动器模块。为测试软体驱动器模块的性能，设计一系列运动学以及力学试验，包括软体驱动器在气压下的弯曲试验、气压与软体驱动器输出力与刚度的测量试验。最后，通过试验展示了软体臂三维运动以及抓持不同物体的性能。

关键词: 仿生, 模块化, 软体驱动器, 有限元分析

Abstract: A multi-segment soft fluidic elastomer robot in three dimensions which is designed to be modular and can move around all the space is presented. The design of the pneumatically actuated silicone module, resembling soft tissue, with three pneumatic chambers is considered and optimized. The design optimization of the silicone module is based on finite element analysis (FEA). The materials used to make the module and design parameters such as the shape of the pneumatic channel cross-section, the ratio of channel length to module length, the distance of channel from the module wall and the ratio of the channel to module cross-section are analyzed. From the FEA analysis, the structure of the silicone module can be optimized:the research choose the pneumatic chambers of semicircular cross section, when need to gain higher pressure, else can choose the pneumatic chambers of ring cross-section indeed. According to the results of the simulative optimization, soft actuator that achieves great flexibility and ability to carry objects with low pressure is fabricated. Then, to get the idea how the multi-segment soft fluidic elastomer robot in three dimensions works, a series of kinematics experiments and mechanics experiments are set up, including the bending range test, the stiffness changing test and the generated force test. Last but not least, a bio-inspired soft arm is defined, which is connected by three single arm segments and can easily conduct the movement and grasping motion in three-dimensional space.

Key words: bio-inspired, finite element analysis, modular, soft actuator

中图分类号:

TP242

谢哲新, 龚哲元, 王田苗, 文力. 可控三维运动的软体驱动器仿真与试验[J]. 机械工程学报, 2018, 54(21): 11-18.

XIE Zhexin, GONG Zheyuan, WANG Tianmiao, WEN Li. Simulation and Experiments of a Controllable Soft Spatial Fluidic Elastomer Manipulator[J]. Journal of Mechanical Engineering, 2018, 54(21): 11-18.

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可控三维运动的软体驱动器仿真与试验

Simulation and Experiments of a Controllable Soft Spatial Fluidic Elastomer Manipulator

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