Results 41 to 50 of about 20,724,674 (244)

Design and Analysis of a Linear Hybrid Excitation Flux-Switching Generator for Direct Drive Wave Energy Converters

open access: yesAdvances in Mechanical Engineering, 2013
Linear generators have the advantage of a simple structure of the secondary, which is suitable for the application of wave energy conversion. Based on the vernier hybrid machines (VHMs), widely used for direct drive wave energy converters, this paper ...
Lei Huang   +4 more
doaj   +1 more source

The Use of Functional Electrical Stimulation on the Upper Limb and Interscapular Muscles of Patients with Stroke for the Improvement of Reaching Movements: A Feasibility Study

open access: yesFrontiers in Neurology, 2017
IntroductionReaching movements in stroke patients are characterized by decreased amplitudes at the shoulder and elbow joints and greater displacements of the trunk, compared to healthy subjects.
Alicia Cuesta-Gómez   +6 more
doaj   +1 more source

Analytical Modeling of Static Eccentricities in Axial Flux Permanent-Magnet Machines with Concentrated Windings

open access: yesEnergies, 2016
The aim of this paper is to calculate the static eccentricity (SE) of a double rotor axial flux permanent magnet (AFPM) machine by using a general analytical model. The flux density in the air gap under healthy conditions is calculated firstly, where the
Yunkai Huang   +3 more
doaj   +1 more source

Dependability of Directional Millimeter Wave Vehicle-to-Infrastructure Communications

open access: yesIEEE Access, 2020
Vehicle-to-infrastructure (V2I) communication is an important enabler for intelligent transportation and rail traffic management systems, which are expected to provide significant road traffic safety and efficiency enhancements.
Stefan Schwarz   +3 more
doaj   +1 more source

Design and analysis of a novel coupled converter with high‐voltage insulation protection in magnetic isolated way

open access: yesIET Power Electronics, 2021
This paper presents a novel coupled converter with high‐voltage insulation protection in magnetic isolated way by taking the case of heater/ignitor/keeper supply for powering discharge cathode in the space ion electric propulsion (EP) thruster.
Ming Fu   +3 more
doaj   +1 more source

Sensorless torque/force control [PDF]

open access: yes, 2011
Motion control systems represent a main subsystem for majority of processing systems that can be found in the industrial sector. These systems are concerned with the actuation of all devices in the manufacturing process such as machines, robots, conveyor
Khalil, Islam Shoukry Mohammed   +2 more
core   +2 more sources

Investigation on the Degradation Mechanism of Si/SiC Cascode Device Under Repetitive Short-Circuit Tests

open access: yesIEEE Open Journal of Power Electronics
The Si/SiC Cascode device has been widely accepted in various applications, however, its reliability issue still remains a major concern and needs to be extensively investigated.
Qiusheng Zhang, Hangzhi Liu, Yuming Zhou
doaj   +1 more source

Discrete-time sliding mode control of high precision linear drive using frictional model [PDF]

open access: yes, 2006
The paper deals with high precision motion control of linear drive system. The accuracy and behavior of the linear drive system are highly affected by the non-linear frictional component compromising of stiction, viscous and stribeck effect present in ...
Khan, Shahzad   +2 more
core   +1 more source

Towards a neural hierarchy of time scales for motor control [PDF]

open access: yes, 2012
Animals show remarkable rich motion skills which are still far from realizable with robots. Inspired by the neural circuits which generate rhythmic motion patterns in the spinal cord of all vertebrates, one main research direction points towards the use ...
Schrauwen, Benjamin   +2 more
core   +1 more source

CBFs-Based Model Predictive Control for Obstacle Avoidance With Tilt Angle Limitation for Ball-Balancing Robots

open access: yesIEEE Access
This study investigates an automatic navigation method for one type of underactuated system, ball-balancing robot (ballbot), in complex environments with both dynamic obstacles and complex-shaped obstacles.
Minh Duc Pham   +5 more
doaj   +1 more source

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