Results 11 to 20 of about 32,185 (269)

Analysis of Current Ripples in Electromagnetic Actuators with Application to Inductance Estimation Techniques for Sensorless Monitoring

open access: yesActuators, 2020
Techniques for estimating the plunger position have successfully proven to support operation and monitoring of electromagnetic actuators without the necessity of additional sensors.
Niklas König   +2 more
doaj   +1 more source

Biomimetic cell-actuated artificial muscle with nanofibrous bundles

open access: yesMicrosystems & Nanoengineering, 2021
Biohybrid artificial muscle produced by integrating living muscle cells and their scaffolds with free movement in vivo is promising for advanced biomedical applications, including cell-based microrobotic systems and therapeutic drug delivery systems ...
Yongwoo Jang   +5 more
doaj   +1 more source

Adaptive Damping Variable Sliding Mode Control for an Electrohydrostatic Actuator

open access: yesActuators, 2021
An electrohydrostatic actuator (EHA) is a basic mechanical/hydraulic system with deficiencies including significant nonlinearity and parametric uncertainties. In line with the challenges of designing a high-precision control strategy, an adaptive damping
Linjie Li   +4 more
doaj   +1 more source

Research on Rotor Loss and Rotor Structure Optimization of Rare Earth Permanent Magnet Synchronous Motors in the Weak Field Area

open access: yesEnergies, 2023
The rotor loss of rare earth permanent magnet synchronous motor (PMSM) affects the efficiency and reliability of the motor and is an important research direction of rare earth permanent magnet synchronous motors.
Guohui Yang   +5 more
doaj   +1 more source

Experimental Investigation of an Electro-Hydrostatic Actuator Based on the Novel Active Compensation Method

open access: yesIEEE Access, 2020
For electro-hydrostatic actuators (EHAs), how to estimate and compensate for the combined effects of the severe nonlinearity caused by inner leakage and friction, the parametric uncertainties of the hydraulic components due to the environment and the ...
Mingkang Wang   +5 more
doaj   +1 more source

Global Time-Varying Path Planning Method Based on Tunable Bezier Curves

open access: yesApplied Sciences, 2023
In this paper, a novel global time-varying path planning (GTVP) method is proposed. In the method, real-time paths can be generated based on tunable Bezier curves, which can realize obstacle avoidance of manipulators.
Longfei Jia   +5 more
doaj   +1 more source

Improved rotor position determination for a sensorless star-connected PMSM drive using Direct Flux Control

open access: yesThe Journal of Engineering, 2019
A technique for driving a star-connected PMSM without a position or speed sensor, which is known in the literature as Direct Flux Control (DFC), is described here.
Klaus Schuhmacher   +2 more
doaj   +1 more source

A Sliding Mode Control Strategy for an ElectroHydrostatic Actuator with Damping Variable Sliding Surface

open access: yesActuators, 2020
Electro-hydrostatic actuator (EHA) has significance in a variety of industrial tasks. For the purpose of elevating the working performance, we put forward a sliding mode control strategy for EHA operation with a damping variable sliding surface. To start
Mingkang Wang   +4 more
doaj   +1 more source

A High-Order Load Model and the Control Algorithm for an Aerospace Electro-Hydraulic Actuator

open access: yesActuators, 2021
It is difficult to describe precisely, and thus control satisfactorily, the dynamics of an electro-hydraulic actuator to drive a high thrust liquid launcher engine, whose structural resonant frequency is usually low due to its heavy inertia and ...
Shoujun Zhao   +6 more
doaj   +1 more source

Design of a cost-effective magnetic gearbox for an aerospace application

open access: yesThe Journal of Engineering, 2019
Magnetic gears are designed to perform in a highly reliable manner, and offer several advantages compared to mechanical gears but difficulties with manufacturing techniques and cost are strong handicaps. In contrast to conventional gears, the contact and
Maamar Benarous, Marlene Trezieres
doaj   +1 more source

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