Results 31 to 40 of about 9,522 (260)

Active Elastic Support/Dry Friction Damper with Piezoelectric Ceramic Actuator

open access: yesShock and Vibration, 2014
The basic operation principle of elastic support/dry friction damper in rotor system was introduced and the unbalance response of the rotor with elastic support/dry friction damper was analyzed theoretically.
Liao Mingfu, Song Mingbo, Wang Siji
doaj   +1 more source

Capability of pipe inside an actuator to move in various fluid and oil surfaces

open access: yesJournal of Mechanical Engineering and Sciences, 2017
This paper proposes a novel pipe inside a magnetic actuator that operates on the elastic energy of a vibration component excited by electromagnetic force.
Hiroyuki Yaguchi   +2 more
doaj   +1 more source

Learning to Exploit Elastic Actuators for Quadruped Locomotion

open access: yesCoRR, 2022
Spring-based actuators in legged locomotion provide energy-efficiency and improved performance, but increase the difficulty of controller design. While previous work has focused on extensive modeling and simulation to find optimal controllers for such systems, we propose to learn model-free controllers directly on the real robot. In our approach, gaits
Antonin Raffin   +5 more
openaire   +2 more sources

Neural-Augmented Hybrid Dynamic Modeling of a Series-Parallel Elastic Actuator

open access: yesIEEE Access
This paper proposes a neural network-based model of a novel hybrid Series-Parallel Elastic Actuator (SEA-PEA) architecture for high-performance robotic applications.
Timur Umurzakov   +2 more
doaj   +1 more source

Modelling of an actuated elastic swimmer [PDF]

open access: yesJournal of Fluid Mechanics, 2017
We study the force production dynamics of undulating elastic plates as a model for fish-like inertial swimmers. Using a beam model coupled with Lighthill’s large-amplitude elongated-body theory, we explore different localised actuations at one extremity of the plate (heaving, pitching and a combination of both) in order to quantify the reactive and ...
Piñeirua, M.   +2 more
openaire   +4 more sources

Fabrication, Mechanical Modeling, and Experiments of a 3D-Motion Soft Actuator for Flexible Sensing

open access: yesIEEE Access, 2020
This paper introduces the modular design and manufacturing method, mechanical model, and test verification of a new type of soft actuator driven by fluid. First, the modular design scheme and driving principle of omnidirectional bending and elongation of
Jian Zhang   +3 more
doaj   +1 more source

A FEM-BEM interactive coupling for modeling the piezoelectric health monitoring systems

open access: yesLatin American Journal of Solids and Structures
In this research, finite element and boundary element methods are coupled together to model the interaction of a piezoelectric ceramic working as an actuator with an elastic material.
Abid A. Shah
doaj   +1 more source

Hemispherical Cell-Inspired Soft Actuator

open access: yesFrontiers in Bioengineering and Biotechnology, 2020
As soft robots have been popular, interest in soft actuators is also increasing. In particular, new types of actuators have been proposed through biomimetics.
Kahye Song   +3 more
doaj   +1 more source

State observer control for robotic series elastic actuators

open access: yesRevista Colombiana de Tecnologías de Avanzada
This implementation shows the results through a control state observer strategy for a series elastic actuator (SEA) of motorized robotic limbs, with the purpose of evaluate the disturbance response with regard to convetional PID controller.
Frank Nixon Giraldo Ramos
doaj   +1 more source

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

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