Results 11 to 20 of about 11,106 (208)
3D MR Thermometry Using Bi-Directional Segmented EPI for Transcranial-Focused Ultrasound. [PDF]
Magn Reson MedABSTRACT Purpose To evaluate the feasibility of replacing clinically utilized 2D thermometry with 3D segmented EPI‐based thermometry with equivalent accuracy, precision, and scan time. Methods A 3D segmented EPI (segEPI) trajectory was modified to allow readouts along both the forward and reverse direction for each phase encoding line, and the sequence
Malmberg M +5 more
europepmc +2 more sources
A Flexible Approach for Fat-Water Separation With Bipolar Readouts and Correction of Gradient-Induced Phase and Amplitude Effects. [PDF]
Magn Reson MedABSTRACT Purpose To develop a fat‐water separation approach that corrects bipolar readout gradient‐induced effects without additional scans and is compatible with any fat‐water separation method. Theory and Methods The proposed approach combines joint fat‐water separation of the odd and even echoes of a bipolar multi‐echo gradient echo acquisition with
Campos Pazmiño J +3 more
europepmc +2 more sources
A Novel Feedback Linearisation Control of Flyback Converter
Power Electronics and Drives, 2023 This paper presents a novel approach for feedback linearisation in a continuous conduction mode (CCM) of the flyback converter. Due to the unstable zero dynamics, a flyback converter has highly non-linear behaviour.
Csizmadia Miklos, Kuczmann Miklos
doaj +1 more source
A novel modeling method for forward-flyback converter and investigating proper design with guidelines to eliminate right half plane zeros [PDF]
AUT Journal of Electrical EngineeringThe main advantages of the flyback converter are the simple topology and the isolation of the output from the primary, which is useful for cases where a compact design is required.
Sayed Mohsen Ahmadi +3 more
doaj +1 more source
Applied Sciences, 2023 To solve the problem of system output voltage fluctuation caused by interferences such as load fluctuation and internal inductor parameter perturbation in a flyback converter, a second-order linear active disturbance rejection control (LADRC) strategy ...
Yannan Yu, Mei Kong, Jichi Yan, Yeqin Lu
doaj +1 more source
A review on flicker-free ac-dc LED drivers for single-phase and three-phase ac power grids [PDF]
, 2019 Light-Emitting Diodes (LEDs) are coming strongly into the lighting market due to their advantages over conventional lighting solutions: energy efficient, controllable in both light and color, long lifetime, lack of a warm-up period and high power density.
Arias Pérez de Azpeitia, Manuel +5 more
core +2 more sources
Mokslas: Lietuvos Ateitis, 2017 Results of experimental investigation and design optimization of flyback transformer are presented. Aim of the work is to investigate experimentally the impact of the flyback transformer design on the flux leakage and maximal output power.
Edvardas Bielskis +2 more
doaj +1 more source
Input characteristics of a non-ideal DC-DC flyback converter [PDF]
Bulletin of the Polish Academy of Sciences: Technical Sciences, 2019 AC and DC input characteristics of the flyback converter are analysed and investigated via Spice simulations and measurements. The influence of parasitic effects in converter components on input characteristics is studied in continuous conduction mode ...
W. Janke, M. Bączek, J. Kraśniewski
doaj +1 more source
Self-Sensing Control for Soft-Material Actuators Based on Dielectric Elastomers [PDF]
, 2019 Due to their energy density and softness that are comparable to human muscles dielectric elastomer (DE) transducers are well-suited for soft-robotic applications. This kind of transducer combines actuator and sensor functionality within one transducer so
Hoffstadt, Thorben, Maas, Jürgen
core +1 more source
An optimized tuned mass damper/harvester device [PDF]
, 2014 Much work has been conducted on vibration absorbers, such as tuned mass dampers (TMD), where significant energy is extracted from a structure. Traditionally, this energy is dissipated through the devices as heat.
Burrow, Steve G +5 more
core +3 more sources