Results 11 to 20 of about 5,207 (292)
A Two-Degree of Freedom Variable Stiffness Actuator Based on the MACCEPA Concept
Actuators, 2014 The current state-of-the-art of variable stiffness actuators consists mostly of different concepts for single-degree of freedom joints. However, in bio-inspired robotic applications, multiple degrees of freedom variable stiffness actuators are often ...
Maarten Weckx +6 more
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Unidirectional variable stiffness hydraulic actuator for load-carrying knee exoskeleton
International Journal of Advanced Robotic Systems, 2017 This article presents the design and experimental testing of a unidirectional variable stiffness hydraulic actuator for load-carrying knee exoskeleton.
Jun Zhu +4 more
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Coupling between the Output Force and Stiffness in Different Variable Stiffness Actuators
Actuators, 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
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A pneumatic particle-blocking variable-stiffness bending actuator
AIP AdvancesThis study introduces a variable-stiffness pneumatic bending actuator to enhance the stiffness of flexible robots. The bending actuator combines the working principles of a pneumatic drive, a wedge structure, and particle blockage.
He Peng, Xia Wang, Dexu Geng
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Design and Performance Analysis of Compliant Actuator Mechanism with Variable Stiffness
Jixie chuandong, 2022 Controllable variable stiffness compliant actuator mechanism has the characteristics of high compliance, high environmental adaptability and good man-machine interaction.
Liu Rong +4 more
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Dynamic Modelling and Experimental Investigation of an Active–Passive Variable Stiffness Actuator
ActuatorsTo overcome the limitations imposed by the low flexible angle of conventional robots, an active–passive variable stiffness elastic actuator (APVSA) is investigated and a nonlinear dynamic model for the APVSA is established, considering the factors of the
Caidong Wang +4 more
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Semi-Active Damping of Mechanical Vibrating SystemsUsing Variable Stiffness Actuator
Al-Khawarizmi Engineering Journal, 2008 In this research, a variable stiffness actuator is proposed to enhance the damping of the mechanical vibrating system. The frequency response analysis of the vibrating system is dependant in order to analyze and synthesis this semi-active damping, where ...
Yarub Omer Naji Al-Azzawi
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Online Reconfiguration of a Variable-Stiffness Actuator [PDF]
IEEE/ASME Transactions on Mechatronics, 2018 This paper presents an algorithm to adjust the configuration of a variable-stiffness actuator to reduce its electrical energy requirements during the execution of repetitive tasks. The algorithm is based on the gradient descent optimization method with a modification of the adaptation step size, a forgetting term, and a projection rule to cope with the
Rene Jimenez-Fabian +4 more
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Novel Design and Modeling of a Soft Pneumatic Actuator Based on Antagonism Mechanism
Actuators, 2020 The soft actuator possesses the characteristics of flexibility, environmental adaptability, and human–machine interaction. Firstly, aiming to resolve the limitation of variable stiffness performance of a traditional pneumatic artificial muscle (PAM ...
Yinglong Chen +2 more
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Actuators, 2023 To improve collision safety in robot–human collaborative applications, increasing attention has been paid to rotational variable stiffness actuators. A new rotational variable stiffness actuator, which works in two stages, is proposed for hybrid passive ...
Caidong Wang +5 more
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