Results 41 to 50 of about 5,207 (292)

Time-Energy Optimal Trajectory Planning for Variable Stiffness Actuated Robot

open access: yesIEEE Access, 2019
A variable stiffness actuator is inspired by the human motor control and is the most popular actuator used to exploit the human performance and human-like motion.
Chen Ji, Minxiu Kong, Ruifeng Li
doaj   +1 more source

Wrist and forearm rotation of the DLR Hand Arm System: Mechanical design, shape analysis and experimental validation

open access: yes, 2011
The DLR Hand Arm System is based upon the variable stiffness concept which has been recently developed to improve impact robustness and energy efficiency of modern robots. This paper continues the work on the bidirectional antagonistic variable stiffness
F. Petit   +7 more
core   +1 more source

Detachable Soft Actuators with Tunable Stiffness Based on Wire Jamming

open access: yesApplied Sciences, 2022
The integration of variable stiffness materials and structures into soft robots is a popular trend, allowing soft robots to switch between soft and rigid states in different situations.
Long Bai   +4 more
doaj   +1 more source

Compact Variable Stiffness Actuator for Surgical Robots

open access: yesJournal of Robotics and Mechatronics, 2022
Highly rigid surgical robots are capable of precise positioning; however, there is a risk of injury to the surrounding organs owing to undesired contact. To solve this problem, surgeons can change their stiffness according to the desired motion by contracting and relaxing the muscles. Therefore, surgical robots that can change their stiffness according
Toshiro Osaka   +4 more
openaire   +1 more source

Research on a Variable-Stiffness Joint and Its Application in Actuators

open access: yesActuators, 2023
Variable-stiffness actuators can flexibly adjust the overall or local stiffness of a structure, thus enabling reconstruction, adaptation, and locking capabilities that can meet a wide range of task requirements.
Qi Wang   +4 more
doaj   +1 more source

Variable Stiffness Actuators: A Port-Based Power-Flow Analysis

open access: yesIEEE Transactions on Robotics, 2012
Variable stiffness actuators realize a novel class of actuators, which are capable of changing the apparent output stiffness independently of the output position. This is mechanically achieved by the internal introduction of a number of elastic elements and a number of actuated degrees of freedom (DOFs), which determine how the elastic elements are ...
Raffaella Carloni   +2 more
openaire   +2 more sources

Characterization of Control-Dependent Variable Stiffness Behavior in Discrete Muscle-Like Actuators

open access: yesApplied Sciences, 2018
This paper presents the modeling, characterization and validation for a discrete muscle-like actuator system composed of individual on–off motor units with complex dynamics inherent to the architecture.
Caleb Fuller, Joshua Schultz
doaj   +1 more source

Programmable and Variable‐Stiffness Robotic Skins for Pneumatic Actuation

open access: yesAdvanced Intelligent Systems, 2023
Pneumatic soft actuators possess relatively fast response, inherent high flexibility, and achieve extraordinary shape morphing under large deformations. Conventionally, the entire body of soft pneumatic robots needs to be designed for specific applications.
Weinan Gao   +8 more
openaire   +4 more sources

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal   +2 more
wiley   +1 more source

Torque and workspace analysis for flexible tendon driven mechanisms

open access: yes, 2010
Tendon driven mechanisms have been considered in robotic design for several decades. They provide lightweight end effectors with high dynamics. Using remote actuators it is possible to free more space for mechanics or electronics.
Chalon, Maxime   +5 more
core   +1 more source

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