Results 21 to 30 of about 19,264 (300)

A Hybrid Model for Lift Response to Dynamic Actuation on a Stalled Airfoil

open access: yesEnergies, 2020
The current research focuses on modeling the lift response due to dynamic (time-varying) “burst-type” actuation on a stalled airfoil. Here, the “burst-type” actuation refers to the synthetic jet (generated from the actuator) that is used for flow ...
Xuanhong An   +2 more
doaj   +1 more source

Kinematic Analysis of a Parallel Manipulator Driven by Perpendicular Linear Actuators

open access: yesActuators, 2021
In this paper, a goniometer-type specimen stage with a linear actuation mechanism mounted on a rotation mechanism is introduced. The linear actuation mechanism was modeled as a spatial parallel manipulator consisting of a moving body, three linear ...
Kee-Bong Choi   +4 more
doaj   +1 more source

The Frequency-Variable Rotor-Blade-Based Two-Degree-of-Freedom Actuation Principle for Linear and Rotary Motion

open access: yesSensors, 2023
Piezoelectric accurate actuation plays an important role in industrial applications. The intrinsic frequency of previous actuators is invariable. However, variable frequency can approach the range near the low-intrinsic-frequency and realize a high ...
Xiaotao Li   +6 more
doaj   +1 more source

Enhancing Linearity in Parallel-Plate MEMS Varactors through Repulsive Actuation

open access: yesMicro, 2023
This paper presents a new MEMS varactor that uses repulsive actuation to achieve an ultra-linear capacitance-to-voltage response. The approach proposed involves actuating the moveable electrode away from the fixed electrode, instead of the conventional ...
Roufaida Bensalem   +4 more
doaj   +1 more source

Linear pneumatic actuator [PDF]

open access: yesMATEC Web of Conferences, 2017
The paper presents a linear pneumatic actuator with short working stroke. It consists of a pneumatic motor (a simple stroke cylinder or a membrane chamber), two 2/2 pneumatic distributors “all or nothing” electrically commanded for controlling the intake/outtake flow to/from the active chamber of the motor, a position transducer and a microcontroller ...
Avram Mihai   +3 more
openaire   +2 more sources

Heterogeneous Multi-Agent-Based Fault Diagnosis Scheme for Actuation System

open access: yesActuators, 2022
In this paper, a fault diagnosis method of a heterogeneous multi-agent is proposed that realizes the rapid and accurate fault diagnosis of a redundant multi-type actuation system of large aircraft.
Yuyan Cao, Ting Li, Yang Li, Xinmin Wang
doaj   +1 more source

Wake Flow Characteristics over an Articulated Lorry Model with/without AC-DBD Plasma Actuation

open access: yesApplied Sciences, 2019
The wake flow characteristics of a 1:20 scale articulated lorry model with a linear Alternate Current Dielectric Barrier Discharge (AC-DBD) plasma actuation implemented was experimentally investigated.
Kin-Hing Lo   +2 more
doaj   +1 more source

Numerical Study on Combustion-Driven Jet Actuation for Aerodynamic Control of Airfoil Flows

open access: yesEnergies, 2023
In this study, a numerical investigation is conducted on combustion-driven pulsed-jet actuation to control the flow around a lifting surface. Based on relevant experimental measurements and computations, high-speed jets are generated from the impulsive ...
Taesoon Kim, Suhyeon Park, Ilyoup Sohn
doaj   +1 more source

Conductive Fabric Heaters for Heat-Activated Soft Actuators

open access: yesActuators, 2019
We examine electrically conductive fabrics as conductive heaters for heat-activated soft actuators. We have explored various fabric designs optimized for material properties, heat distribution and actuation/de-actuation characteristics of the soft ...
Mark Cartolano   +3 more
doaj   +1 more source

Underwater Crawling Robot With Hydraulic Soft Actuators

open access: yesFrontiers in Robotics and AI, 2021
Benthic operation plays a vital role in underwater applications, where crawling robots have advantages compared with turbine-based underwater vehicles, in locomotion accuracy, actuation efficiency, current resistance, and in carrying more payloads.
Qinlin Tan   +12 more
doaj   +1 more source

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