Results 131 to 140 of about 17,177,900 (326)

Research of Zero Sequence Current of Parallel System of PWM Rectifier

Gong-kuang zidonghua, 2012
Taking two-level parallel system of PWM rectifier as example, the paper analyzed cause of zero sequence circulation in parallel module: the circulation is generated by difference of duty cycle of zero sequence current of two modules; generation of the ...
NI Shuai, TANG Li-na, LIU Jie, NI Shi-jiang   +3 more
doaj  

The Role of Magnetic Resonance Spectroscopy (MRS), Diffusion‐Tensor‐Imaging (DTI) and Structural MRI in the Alzheimer's Disease and Mild Cognitive Impairment Diagnosis: A Review

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Alzheimer's disease (AD) is one of the most common neurological disorders affecting older adults, with approximately 7.2 million cases only in the United States. This number is projected to increase to 13.8 million in the United States by 2060, leading to increased expenditures for healthcare, long‐term care and hospice services. Consequently,
Valentina Zecca, Gianmauro Palombelli, Nicola Vanacore, Rossella Canese   +3 more
wiley   +1 more source

Robust position control of ultrasonic motor using VSS observer [PDF]

, 2010
Intrinsic properties of ultrasonic motor (high torque for low speed, high static torque, compact in size, etc.) offer great advantages for industrial applications. However, when load torque is applied, dead-zone occurs in control input.
Darba, Araz, Odomari, Shogo, Senjyu, Tomonobu, Uchida, Kosuke, Yona, Atsushi   +4 more
core   +1 more source

Ultralow‐Backscattering Induced Mode Splitting in Chipscale Valley Photonic Topological Cavities

Laser &Photonics Reviews, EarlyView.
The proposed in‐situ metrology based on mode splitting quantifies the ultralow backscattering of topological valley edge states at a single sharp corner, demonstrating near‐lossless topological transport (0.09 dB/corner) on a silicon chip. This work provides insight into the robustness of the photonic valley system and shows the great potential of ...
Kaiji Chen, Wenhao Wang, Yi Ji Tan, Zhonglei Shen, Ridong Jia, Ranjan Singh   +5 more
wiley   +1 more source

Motor/generator and electronic control considerations for energy storage flywheels [PDF]

, 1984
A spacecraft electric power supply system is described. Requirements of the system are to accelerate a momentum wheel to a fixed maximum speed when solar energy is available and to maintain a constant voltage on the spacecraft bus under varying loads ...
Nola, F. J.
core   +1 more source

Clinical, Genetic, and Imaging Characteristics of SCA27B: Insights from a Large Dutch Cohort

Movement Disorders, EarlyView.
Abstract Background Deep intronic GAA repeat expansions in intron 1 of the FGF14 gene were identified in 2023 as cause of late‐onset cerebellar ataxia. Since then, GAA‐FGF14‐related ataxia (SCA27B) has emerged as one of the most common genetic causes of late‐onset cerebellar ataxia.
Teije H. van Prooije, Maartje Pennings, Roderick P.P.W.M. Maas, Jeroen de Vries, Corien Verschuuren‐Bemelmans, Vincent Odekerken, Sirwan K.L. Darweesh, Mark Huisman, Mayke Oosterloo, Arthur Buijink, Jaron van de Wardt, Els Vanhoutte, Tsz Hang Wong, Lisette Koens, Eva de Boer, Judith van Gaalen, Martijn Beudel, Dareia S. Roos, Jorrit I. Hoff, Thimo Cornelissen, Meyke Schouten, Thatjana Gardeichik, Erica van der Looij, Christine Klein, Joanne Trinh, Erik‐Jan Kamsteeg, Bart van de Warrenburg   +26 more
wiley   +1 more source

Sample environment for operando solid‐state battery characterization

Journal of Applied Crystallography, EarlyView.
A versatile sample environment enabling operando studies of solid‐state batteries with temperature control and pressure monitoring is described.All‐solid‐state batteries provide new hope for developing electrical energy storage far beyond the current state of the art.
Therese S. S. Faurskov, Lasse N. Skov, Jakob B. Grinderslev, Lasse R. Kristensen, Jens Magnus Horsted Bendtsen, Mads Kofod Dahl, Tommy Kessler, Bettina Pilgaard Andersen, Innokenty Kantor, Mads R. V. Jørgensen, Dorthe B. Ravnsbæk, Torben R. Jensen   +11 more
wiley   +1 more source

Research of Rectification Technology of Electric Locomotive under Unbalanced Three-phase Voltage

Gong-kuang zidonghua, 2012
In view of problem of negative sequence current component in AC side of traditional PWM rectifier because of unbalanced three-phase voltage existed in converter system of underground DC electric locomotive, the paper proposed a control strategy of ...
LV Kang-fei, SHI Chao-yue
doaj  

e3SIM: Epidemiological‐ecological‐evolutionary simulation framework for genomic epidemiology

Methods in Ecology and Evolution, EarlyView.
Abstract Infectious disease dynamics result from the complex interplay of epidemiological, ecological and evolutionary (epi‐eco‐evo) processes. Accurately modelling these coupled processes is crucial for understanding pathogen spread and informing public health strategies.
Peiyu Xu, Shenni Liang, Andrew Hahn, Vivian Zhao, Wai Tung ‘Jack’ Lo, Benjamin C. Haller, Benjamin Sobkowiak, Melanie H. Chitwood, Caroline Colijn, Ted Cohen, Kyu Y. Rhee, Philipp W. Messer, Martin T. Wells, Andrew G. Clark, Jaehee Kim   +14 more
wiley   +1 more source

PWM Control System of DC Motor Based on FPGA

Gong-kuang zidonghua, 2011
In view of problems of bad precision and anti-interference ability existed in PWM control system of DC motor based on single-chip microcomputer and being difficult to meet with requirement of real-time performance existed in PWM control system of DC ...
LU Bin, SU Cheng-gong
doaj