Research on Precise Biomimetic Actuator Based on Inchworm Principle

2006 ◽  
Author(s):  
Lu Quanguo ◽  
Chen Dingfang
Keyword(s):  
Biomimetic Actuator

scholarly journals Characterisation and Control of a Woven Biomimetic Actuator for Wearable Neurorehabilitative Devices

Actuators ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 37
Author(s):  
Vaughan Murphy ◽  
Brandon P. R. Edmonds ◽  
Ana Luisa Trejos
Keyword(s):  
Performance Metrics ◽  
Woven Fabric ◽  
Total Force ◽  
Control Methods ◽  
Soft Actuator ◽  
Sewing Thread ◽  
And Control ◽  
Fabric Mesh ◽  
Biomimetic Actuator ◽  
Multiple Units

Twisted coiled actuators (TCAs) are a type of soft actuator made from polymer fibres such as nylon sewing thread. As they provide motion in a compact, lightweight, and flexible package, they provide a solution to the actuation of wearable mechatronic devices for motion assistance. Their limitation is that they provide low total force, requiring them to actuate in parallel with multiple units. Previous literature has shown that the force and stroke production can be improved by incorporating them into fabric meshes. A fabric mesh could also improve the contraction efficiency, strain rate, and user comfort. Therefore, this study focused on measuring these performance metrics for a set of TCAs embedded into a woven fabric mesh. The experimental results show that the stroke of the actuators scaled linearly with the number of activated TCAs, achieving a maximum applied force of 11.28 N, a maximum stroke of 12.23%, and an efficiency of 1.8%. Additionally, two control methods were developed and evaluated, resulting in low overshoot and steady-state error. These results indicate that the designed actuators are viable for use in wearable mechatronic devices, since they can scale to meet different requirements, while being able to be accurately controlled with minimal additional components.

Electromechanical-Conductive Natural Rubber Doped Eggshell and Eggshell Membrane for Drug Delivery and Actuator Applications

2018 ◽  
Vol 934 ◽  
pp. 43-49
Author(s):  
Poramin Boonprasert ◽  
Nuchnapa Tangboriboon
Keyword(s):  
Composite Materials ◽  
Natural Rubber ◽  
Artificial Muscle ◽  
Eggshell Membrane ◽  
Curing Time ◽  
Electrical Field ◽  
Fibrous Protein ◽  
Rubber Composite ◽  
Field Response ◽  
Biomimetic Actuator

Natural rubber composite materials were prepared by using sulfur curing system of STR 5L added with hen eggshell and eggshell membrane to increase electrical and mechanical properties for biomimetic actuator and artificial muscle applications. Samples were vulcanized at temperature 150°C. Hen eggshells and eggshell membrane powder (0, 20, 40, and 60 phr) were added into natural rubber. The main composition of hen eggshells composed of 96.35 wt% calcium carbonate (CaCO3) while mostly composition of hen eggshell membrane is fibrous protein in terms of collagen. The best condition is addition of eggshell 40 phr (formula 3) and eggshell membrane 20 phr (formula 5) to obtain the highest storage modulus response equal to 2.85 x 106 and 2.97 x106 Pa, respectively. The curing time (Tc90) of pure natural rubber (formula 1), formula 3, and formula 5 are 8.22, 6.73, and 5.67 min, respectively. Furthermore, the curing time, rheology, and electrical field response of natural rubber composite materials were measured by moving die rheometer and impedance analyzer, and reported here.

Test standard and output force characteristics of the electroresponsive biomimetic actuator based on calcium alginate hydrogel

2018 ◽  
Vol 5 (9) ◽  
pp. 095704 ◽  
Author(s):  
Gang Zhao ◽  
Junjie Yang ◽  
Yuda Wu ◽  
Honghao Zhao ◽  
Guangli Zhang ◽  
...  
Keyword(s):  
Calcium Alginate ◽  
Alginate Hydrogel ◽  
Output Force ◽  
Biomimetic Actuator ◽  
Calcium Alginate Hydrogel ◽  
Force Characteristics

A novel biomimetic actuator system

1998 ◽  
Vol 25 (1-2) ◽  
pp. 1-18 ◽  
Author(s):  
Richard M. Kolacinski ◽  
Roger D. Quinn
Keyword(s):  
Actuator System ◽  
Biomimetic Actuator

Development and Evaluation of the Biomimetic Actuator based on Bacterial Cellulose

2012 ◽  
Vol 29 (3) ◽  
pp. 302-306 ◽  
Author(s):  
Si-Seup Kim ◽  
Chang-Doo Kee
Keyword(s):  
Bacterial Cellulose ◽  
Biomimetic Actuator

716 Development of Three Joint Series Connection Type Biomimetic Actuator for Dancing and Jumping Robot

2008 ◽  
Vol 2008.6 (0) ◽  
pp. 47-48
Author(s):  
Takahiro Ogura ◽  
Akitoshi ITOH
Keyword(s):  
Series Connection ◽  
Connection Type ◽  
Jumping Robot ◽  
Biomimetic Actuator

Biomimetic Actuator and Sensor for Robot Hand

2012 ◽  
Vol 36 (12) ◽  
pp. 1497-1502 ◽  
Author(s):  
Baek-Chul Kim ◽  
Jinah Chung ◽  
Hanjoung Cho ◽  
Seunghoon Shin ◽  
Hyongsuk Lee ◽  
...  
Keyword(s):  
Robot Hand ◽  
Biomimetic Actuator

1146 The Optimal Continuous Jumping Sequence of The Biomimetic Actuator for Jumping and Dancing Robot

2007 ◽  
Vol 2007.6 (0) ◽  
pp. 131-132
Author(s):  
Takahiro OGURA ◽  
Koji TAJIMA ◽  
Akitoshi ITOH
Keyword(s):  
Biomimetic Actuator
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