Results 21 to 30 of about 112,916 (259)

Variable stiffness actuators: The user’s point of view [PDF]

open access: yesThe 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
openaire   +4 more sources

Dynamic Modeling and Control of Antagonistic Variable Stiffness Joint Actuator

open access: yesActuators, 2021
This study aims to develop a novel decoupling method for the independent control of the position and stiffness of a variable stiffness joint actuator (VSJA), which has been proven to be able to vary its stiffness in a larger range than other variable ...
Ming Zhang   +6 more
doaj   +1 more source

Coupling between the Output Force and Stiffness in Different Variable Stiffness Actuators

open access: yesActuators, 2014
The fundamental objective in developing variable stiffness actuators is to enable the actuator to deliberately tune its stiffness. This is done through controlling the energy flow extracted from internal power units, i.e., the motors of a variable ...
Amir Jafari
doaj   +1 more source

A novel design of shape-memory alloy-based soft robotic gripper with variable stiffness

open access: yesInternational Journal of Advanced Robotic Systems, 2020
Soft robotic grippers with compliance have great superiority in grabbing objects with irregular shape or fragility compared with traditional rigid grippers.
Mingfang Liu   +3 more
doaj   +1 more source

Structural design and stiffness matching control of bionic variable stiffness joint for human–robot collaboration

open access: yesBiomimetic Intelligence and Robotics, 2023
The physical compliance of interaction is an important requirement for safe and efficient collaboration between robots and humans, and the realization of human–robot compliance requires robot joints with variable stiffness similar to those of human ...
Xiuli Zhang, Liqun Huang, Hao Niu
doaj   +1 more source

Variable Volumetric Stiffness Fluid Mount Design

open access: yesShock and Vibration, 2004
Passive fluid mounts are commonly used in the automotive and aerospace applications to isolate the cabin from the engine noise and vibration. Due to manufacturing and material variabilities, no two identical fluid mount designs act the same.
Nader Vahdati, Mehdi Ahmadian
doaj   +1 more source

Variable stiffness element by granular jamming (Stiffness enhancement by a wrinkle-free outer membrane)

open access: yesNihon Kikai Gakkai ronbunshu, 2017
A flexible bag containing particles becomes rigid when the air inside the element is evacuated. Variable stiffness elements using granular jamming have been used for haptic displays and robotic orthoses helped by the soft and lightweight body.
Yuma KITAGAWA, Takashi MITSUDA
doaj   +1 more source

Stiffness modeling of a variable stiffness compliant link

open access: yesMechanism and Machine Theory, 2020
Abstract Recently, a variable stiffness robotic link based on the rotating beam concept has been developed for applications in physical human robot interaction. A substantial challenge for design of such links is the modeling of stiffness behavior to permit stiffness control.
Tyler Morrison, Hai-Jun Su
openaire   +2 more sources

Constraint-based equilibrium and stiffness control of variable stiffness actuators [PDF]

open access: yes2011 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
openaire   +2 more sources

Keratin 19 as a prognostic marker and contributing factor of metastasis and chemoresistance in high‐grade serous ovarian cancer

open access: yesMolecular Oncology, EarlyView.
Keratin 19 (KRT19) is overexpressed in high‐grade serous ovarian cancer with high levels of Kallikrein‐related peptidases (KLK) 4–7 and is associated with poor survival. In vivo analyses demonstrate that elevated KRT19 increases peritoneal tumour burden.
Sophia Bielesch   +13 more
wiley   +1 more source

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