Results 1 to 10 of about 51,295 (168)

A Novel Variable Stiffness Mechanism Capable of an Infinite Stiffness Range and Unlimited Decoupled Output Motion

open access: yesActuators, 2014
In this paper, a novel variable stiffness mechanism is presented, which is capable of achieving an output stiffness with infinite range and an unlimited output motion, i.e., the mechanism output is completely decoupled from the rotor motion, in the zero ...
Stefan Groothuis   +2 more
doaj   +3 more sources

Design and Analysis of Variable-Stiffness Fast-Steering Mirror

open access: yesActuators, 2023
The non-variable stiffness of the flexible hinge in the fast-steering mirror (FSM) cannot adapt to varying load demands. To address this issue, this paper presents an innovative variable-stiffness rotational mechanism designed for use with FSMs. Firstly,
Jin Luo   +5 more
doaj   +1 more source

Design and Analysis of a Novel Compliant Actuator With Variable Stiffness by Spring Pretension Adjustment

open access: yesIEEE Access, 2023
Variable stiffness actuators (VSA) are an emerging advanced driving method for robotic joint in physical human-robot interaction scenarios. This paper proposes a VSA based on adjusting the pre-tightening force of the driving ropes by rotating the linear ...
Youlei Zhao   +3 more
doaj   +1 more source

A Variable Parameter Ambient Vibration Control Method Based on Quasi-Zero Stiffness in Robotic Drilling Systems

open access: yesMachines, 2021
Vibrations in the aircraft assembly building will affect the precision of the robotic drilling system. A variable stiffness and damping semiactive vibration control mechanism with quasi-zero stiffness characteristics is developed.
Laixi Zhang   +4 more
doaj   +1 more source

Performance Optimization for Bionic Robotic Dolphin with Active Variable Stiffness Control

open access: yesBiomimetics, 2023
Aquatic animals such as fish and cetaceans can actively modulate their body stiffness with muscle to achieve excellent swimming performance under different situations.
Di Chen   +5 more
doaj   +1 more source

A Comparative Study on 2-DOF Variable Stiffness Mechanisms [PDF]

open access: yes, 2020
Based on the idea of variable stiffness mechanisms, a variety of such mechanisms is shown in this work. Specifically, 2-DOF parallel kinematic machines equipped with redundant actuators and non-linear springs in the actuated joints are presented and a comparative overview is drawn.
Christoph Stoeffler   +2 more
openaire   +2 more sources

Distributed variable stiffness joint assist mechanism based on laminated structure

open access: yesInternational Journal of Advanced Robotic Systems, 2021
Exoskeleton technology is more and more widely used in military, human rehabilitation, and other fields, but exoskeleton assisting mechanisms have problems such as high quality, concentrated driving sources, and poor flexibility.
Zhenquan Fan   +4 more
doaj   +1 more source

Soft Actuator Model for a Soft Robot With Variable Stiffness by Coupling Pneumatic Structure and Jamming Mechanism

open access: yesIEEE Access, 2020
Current research into soft robots not only needs to improve their compliance, but also requires consideration of the real-time controllability of rigidity and flexibility. By combining the advantages of Pneu-Net structure and the driven jamming mechanism,
Feng-Yu Xu   +3 more
doaj   +1 more source

On a Two-DoF Parallel and Orthogonal Variable-Stiffness Actuator: An Innovative Kinematic Architecture

open access: yesRobotics, 2019
Variable-Stiffness Actuators are continuously increasing in importance due to their characteristics that can be beneficial in various applications. It is undisputed that several one-degree-of-freedom (DoF) solutions have been developed thus far.
Matteo Malosio   +5 more
doaj   +1 more source

Conceptual mechanical design of antagonistic variable stiffness joint based on equivalent quadratic torsion spring

open access: yesScience 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
doaj   +1 more source

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