Results 71 to 80 of about 57,287 (288)

Speed control with low armature loss for very small sensorless brushed DC motors [PDF]

, 2009
A method for speed control of brushed dc motors is presented. It is particularly applicable to motors with armatures of less than 1 cm3. Motors with very small armatures are difficult to control using the usual pulsewidth-modulation (PWM) approach and ...
Scott, Jonathan B., McLeish, J., Round, W. Howell   +2 more
core   +1 more source

Arthropod‐Inspired Miniature Modular Vibration Direct‐Drive Robot With Untethered Locomotion

Advanced Science, EarlyView.
This work presents an arthropod‐inspired untethered miniature modular vibration direct‐drive robot. By utilizing standardized driving units and nested locking interfaces, on‐demand reconfiguration into quadruped, hexapod, octopod, and circular morphologies is achieved.
Shijing Zhang, Ziteng Liu, Youwei Liu, Dehong Wang, Yingxiang Liu   +4 more
wiley   +1 more source

Re‐Thinking Electronic Circuit Design Through Emerging Reconfigurable Field Effect Transistors

Advanced Science, EarlyView.
Graphical illustration of reconfigurable field effect transistor (RFET) operation modes, including n‐type, p‐type, and ambipolar transport, as well as their areas of application discussed in this review: digital circuit design, analog circuit design, post‐Shannon computing, and sensing. ABSTRACT Reconfigurable field‐effect transistors, short RFETs, are
Jens Trommer, Juan P. Martinez, Yuxuan He, Giulio Galderisi, Katrin Pingen, Eduardo Sergio Oliveros‐Mata, Lisa Tellis, Cigdem Cakirlar, Christoph Beyer, Brojogopal Sapui, Joachim Knoch, Klaus Hofmann, Sandro Carrara, Eugenio Cantatore, Max C. Lemme, Ian O'Connor, Akash Kumar, Andre Heinzig, Thomas Mikolajick, Walter M. Weber   +19 more
wiley   +1 more source

Two-step commutation control of switched reluctance motor based on PWM

The Journal of Engineering, 2019
Aiming at the noise suppression of switched reluctance machine (SRM), the two-step commutation control method is improved. Combining this with pulse width modulation (PWM), the optimisation problem of the switching angle is studied and analysed and given
Chuan Yu, Zhiyao Xiao, Yongming Huang, Yesheng Zhu   +3 more
doaj   +1 more source

MagGami: An Electromagnetic Origami Actuator With High Stiffness‐Switching Density for Lightweight Joint‐Space Wearable Haptics

Advanced Science, EarlyView.
Concept of the MagGami‐based joint‐space haptic glove. a) Comparison between Cartesian‐space fingertip force feedback and distributed joint‐space torque feedback, highlighting the limitations of representative motor‐driven, pneumatic, and smart material‐based haptic actuators.
Tianhao Jin, Zirui Niu, Qingyun Tang, Zemin Wang, Yu Qiao, Guocai Yao, Yong Zhou, Boxue Shan, Yan Zhang, Dangxiao Wang   +9 more
wiley   +1 more source

Lighting System Control for Cataract Maturity Imaging Device

Journal of Electrical Engineering and Computer
As technology advances, various innovations have been made to assist in diagnosing and treating cataracts. In cataract detection, artificial intelligence-based methods such as Convolutional Neural Networks (CNN) have proven very effective in detecting ...
Katon Bagus Setiawan, I Komang Somawirata, Irmalia Suryani Faradisa   +2 more
doaj   +1 more source

Detection Technique of Partial Discharges at Impulse Voltage with Appropriate Filter Settings for Signal Separation

Energies, 2019
Due to the increased utilization of electric converters feeding rotating high voltage motors, their insulation is subject to transient impulse and high frequency oscillating voltages.
Karsten Backhaus, Lena Elspaß, Konstantin Pasche   +2 more
doaj   +1 more source

On abolishing symmetry requirements in the formulation of a five-level selective harmonic elimination pulse-width modulation technique [PDF]

, 2006
Selective harmonic elimination pulse width modulation (SHE-PWM) techniques offer a tight control of the harmonic spectrum of a given voltage waveform generated by a power electronic converter along with a low number of switching transitions.
Rao, M.V., Dahidah, M.S.A., Agelidis, V.G.   +2 more
core  

XChrom: A Cross‐Cell Chromatin Accessibility Prediction Model Integrating Genomic Sequence and Cellular Context

Advanced Science, EarlyView.
XChrom is a deep learning framework that integrates genomic sequence and single‐cell context to predict chromatin accessibility. It generalizes to unseen cells and genomic regions, enabling cross‐sample and cross‐species analysis. Applied to COVID‐19 patient data, XChrom reveals key transcriptional regulatory mechanisms and disease‐associated ...
Yuanyuan Miao, Xuan Liang, Wenwen Zhang, Dongmei Han, Yurun Li, Zhen Wang   +5 more
wiley   +1 more source

Nova família de conversores CC-CC PWM não isolados utilizando células de comutação de três estados [PDF]

, 2001
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Tecnológico. Programa de Pós-Graduação em Engenharia ElétricaEste trabalho apresenta uma nova família de conversores CC-CC PWM não isolados.
Bascopé, Grover Victor Torrico
core