There is a considerable demand to develop robots that can perform sophisticated tasks such as grabbing delicate materials, passing through narrow pathways, and acting as mediators between humans and robots. Soft robots can provide a solution for such applications. In this study, we propose an electrohydraulic gripper, which is based on electrostatic and hydraulic forces. Interestingly, the gripper generates a hydraulic force without an external fluid supply source. In addition, it achieves good compliance, because the gripper is composed of soft materials such as polyethylene film and silicone. We experimentally investigate the characteristics of the actuator of the gripper. In addition, the electrohydraulic gripper demonstrates an ability to grasp delicate materials.
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References
1.
MajidiC. Soft robotics: a perspective—current trends and prospects for the future. Soft Robot, 2014; 1:5–11.
2.
KimS, LaschiC, TrimmerB. Soft robotics: a bioinspired evolution in robotics. Trends Biotechnol, 2013; 31:287–294.
3.
RusD, TolleyMT. Design, fabrication and control of soft robots. Nature, 2015; 521:467.
HughesJ, CulhaU, GiardinaF, et al.Soft manipulators and grippers: a review. Front Robot AI, 2016; 3:69.
9.
DeimelR, BrockO. A novel type of compliant and underactuated robotic hand for dexterous grasping. Int J Robot Res, 2016; 35:161–185.
10.
Mani S, Perez R, Lee H, et al. Effects of applied potential on friction of a PVDF micro gripper. In Proceedings of the STLE/ASME 2006 International Joint Tribology Conference, Paper No. IJTC2006-12138. ASME, 2006, pp. 1145–1152.
11.
NagaseJY, WakimotoS, SatohT, et al.Design of a variable-stiffness robotic hand using pneumatic soft rubber actuators. Smart Mater Struct, 2011; 20:105015.
12.
AraromiOA, GavrilovichI, ShintakeJ, et al.Rollable multisegment dielectric elastomer minimum energy structures for a deployable microsatellite gripper. IEEE ASME T Mech, 2015; 20:438–446.
13.
LeeJ-H, ChungYS, RodrigueH. Application of SMA spring tendons for improved grasping performance. Smart Mater Struct, 2018; 28:035006.
14.
MartinezRV, BranchJL, FishCR, et al.Robotic tentacles with three-dimensional mobility based on flexible elastomers. Adv Mater, 2013; 25:205–212.
15.
MellerMA, BryantM, GarciaE. Reconsidering the mckibben muscle: energetics, operating fluid, and bladder material. J Intell Material Syst, 2014; 25:2276–2293.
16.
Niiyama R, Rus D, Kim S. Pouch motors: printable/inflatable soft actuators for robotics. In Proceedings of the 2014 IEEE International Conference on Robotics and Automation (ICRA). IEEE, 2014, pp. 6332–6337.
17.
VealeAJ, XieSQ, AndersonIA. Characterizing the peano fluidic muscle and the effects of its geometry properties on its behavior. Smart Mater Struct, 2016; 25:065013.
18.
Sun Y, Song YS, Paik J. Characterization of silicone rubber based soft pneumatic actuators. In Proceedings of the 2013 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). IEEE, 2013, pp. 4446–4453.
19.
Suzumori K, Endo S, Kanda T, et al. A bending pneumatic rubber actuator realizing soft-bodied manta swimming robot. In Proceedings of the 2007 IEEE International Conference on Robotics and Automation. IEEE, 2007, pp. 4975–4980.
20.
MosadeghB, PolygerinosP, KeplingerC, et al.Pneumatic networks for soft robotics that actuate rapidly. Adv Funct Mater, 2014; 24:2163–2170.
21.
PelrineR, KornbluhR, PeiQ, et al.High-speed electrically actuated elastomers with strain greater than 100%. Science, 2000; 287:836–839.
22.
JungK, KimKJ, ChoiHR. A self-sensing dielectric elastomer actuator. Sens Actuator A Phys, 2008; 143:343–351.
23.
ShianS, Bertoldi Ka, ClarkeDR. Dielectric elastomer based grippers for soft robotics. Adv Mater, 2015; 27:6814–6819.
24.
GuGY, ZhuJ, ZhuLM. A survey on dielectric elastomer actuators for soft robots. Bioinspiration Biomim, 2017; 12:011003.
DudutaM, WoodRJ, ClarkeDR. Multilayer dielectric elastomers for fast, programmable actuation without prestretch. Adv Mater, 2016; 28:8058–8063.
28.
AhmedS, OunaiesZ, FreckerM. Investigating the performance and properties of dielectric elastomer actuators as a potential means to actuate origami structures. Smart Mater Struct, 2014; 23:094003.
JaniJM, LearyM, SubicA, et al.A review of shape memory alloy research, applications and opportunities. Mater Des, 2014; 56:1078–1113.
31.
LaschiC, CianchettiM, MazzolaiB, et al.Soft robot arm inspired by the octopus. Adv Robot, 2012; 26:709–727.
32.
YeomSW, OhIK. A biomimetic jellyfish robot based on ionic polymer metal composite actuators. Smart Mater Struct, 2009; 18:085002.
33.
KimKJ, TadokoroS. Electroactive Polymers for Robotic Applications. London, United. Kingdom. Springer, 2007.
34.
CarricoJD, TylerT, LeangKK. A comprehensive review of select smart polymeric and gel actuators for soft mechatronics and robotics applications: fundamentals, freeform fabrication, and motion control. Int J Smart Nano Mater, 2017; 8:144–213.
35.
Carrico JD, Kim KJ, Leang KK. 3D-printed ionic polymer-metal composite soft crawling robot. In Proceedings of the 2017 IEEE International Conference on Robotics and Automation (ICRA). IEEE, 2017, pp. 4313–4320.
36.
ShahinpoorM, KimKJ. Ionic polymer-metal composites: I. Fundamentals. Smart Mater Struct, 2001; 10:819.
37.
KimKJ, ShahinpoorM. Ionic polymer–metal composites: II. Manufacturing techniques. Smart Mater Struct, 2003; 12:65.
38.
ShahinpoorM, Bar-CohenY, SimpsonJO, et al.Ionic polymer-metal composites (IPMCs) as biomimetic sensors, actuators and artificial muscles-a review. Smart Mater Struct, 1998; 7:R15.
39.
AcomeE, MitchellSK, MorrisseyTG, et al.Hydraulically amplified self-healing electrostatic actuators with muscle-like performance. Science, 2018; 359:61–65.
40.
KellarisN, VenkataVG, SmithGM, et al.Peano-hasel actuators: muscle-mimetic, electrohydraulic transducers that linearly contract on activation. Sci Robot, 2018; 3:eaar3276.
41.
VealeAJ, XieSQ, AndersonIA. Characterizing the peano fluidic muscle and the effects of its geometry properties on its behavior. Smart Mater Struct, 2016; 25:065013.
42.
James Hopwood Jeans. The Mathematical Theory of Electricity and Magnetism. Cambridge, England: University Press, 1908.
43.
KatohK, WakimotoT. Adhesive force due to a thin liquid film between two smooth surfaces (wringing mechanism of gage blocks). J JSEM, 2014; 14:s36–s41.
44.
SedlacekM, KrumpholcM. Digital measurement of phase difference-a comparative study of DSP algorithms. Metrol Meas Syst, 2005; 12:427–448.
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