Results 11 to 20 of about 123,080 (295)
Adaptive Variable Stiffness with strategically arranged materials
Spool, 2020 By designing materials with variable stiffness, structures can adapt to various functional requirements. This paper presents variable stiffness explored in two case studies relying on an architected material approach that involved gradient pattern ...
Henriette Bier +2 more
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A Variable Stiffness Joint With Electrospun P(VDF-TrFE-CTFE) Variable Stiffness Springs [PDF]
IEEE Robotics and Automation Letters, 2018 This letter presents a novel rotational variable stiffness joint that relies on one motor and a set of variable stiffness springs. The variable stiffness springs are leaf springs with a layered design, i.e., an electro-active layer of electrospun aligned nanofibers of poly(vinylidene fluoride-trifluoroethylene-chlorotrifluoroethylene) [P(VDF-TrFE-CTFE)]
R. Carloni +4 more
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Constraint-based equilibrium and stiffness control of variable stiffness actuators [PDF]
2011 IEEE International Conference on Robotics and Automation, 2011 Considerable research effort has gone into the design of variable passive stiffness actuators (VSAs). A number of different mechanical designs have been proposed, aimed at either a biomorphic (i.e., antagonistic) design, compactness, or simplified modelling and control.
Matthew Howard 0001 +2 more
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Journal of the Chinese Medical Association, 2008 Previous studies on variable stiffness colonoscopes showed mixed results. Different methods of activating the variable stiffness function were used and might explain part of the controversy. To determine the most efficient way of activating the variable stiffness function, this study compared 3 methods (no activation, regular activation, activation on ...
Hsieh, Yu-Hsi +2 more
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Design of a Variable Stiffness Spring with Human-Selectable Stiffness
2023 IEEE International Conference on Robotics and Automation (ICRA), 2023 Springs are commonly used in wearable robotic devices to provide assistive joint torque without the need for motors and batteries. However, different tasks (such as walking or running) and different users (such as athletes with strong legs or the elderly with weak legs) necessitate different assistive joint torques, and therefore, springs with ...
Chase W. Mathews, David J. Braun
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Advanced Intelligent Systems, 2023 The 3D variable–stiffness structure can realize shape programming, reconstruction, adaptation, and locking, and therefore, it has a wide design creation space. Accurate local stiffness control is of considerable significance to the design and application
Qi Wang +8 more
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Analysis of Variable-Stiffness Characteristics of Variable-Stiffness Elastic Actuator
, 2023 In order to improve the stiffness of the flexible robot,this paper proposes a variable-stiffness elastic actuator to improve the rigidity of flexible robots. The actuator integrates the working principles of a pneumatic drive, wedge structure, and particle blockage. the tensile stiffness of the actuator is nonlinearly negatively correlated with the air
He Peng, Xia Wang, Dexu Geng, Wenzhi Xu
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Heterogeneous origami-architected materials with variable stiffness
Communications Materials, 2021 Origami-inspired metamaterials are attractive for their programmable shape-shifting properties but are typically characterized by low structural rigidity.
Yasuhiro Miyazawa +7 more
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Variable stiffness actuators: The user’s point of view [PDF]
The International Journal of Robotics Research, 2015 Since their introduction in the early years of this century, variable stiffness actuators (VSA) witnessed a sustained growth of interest in the research community, as shown by the growing number of publications. While many consider VSA very interesting for applications, one of the factors hindering their further diffusion is the relatively new ...
Giorgio Grioli +16 more
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Science Progress, 2020 The variable stiffness joint is a kind of flexible actuator with variable stiffness characteristics suitable for physical human–robot interaction applications.
Jishu Guo
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