Results 81 to 90 of about 5,546 (208)

Comparison of Simple Self-Oscillating PWM Modulators [PDF]

, 2016
Switch-mode power amplifiers has become the conventional choice for audio applications due to their superior efficiency and excellent audio performance. These amplifiers rely on high frequency modulation of the audio input. Conventional modulators use a fixed high frequency for modulation.
Dahl, Nicolai J.; id_orcid 0000-0002-1128-4833, Iversen, Niels Elkjær, Knott, Arnold; id_orcid 0000-0003-4384-0432, Andersen, Michael A. E.; id_orcid 0000-0002-5612-0541   +3 more
openaire  

Preservation of positive emotion recognition in patients with multiple sclerosis: Artefact related to methodological issues or real feature of the disorder?

Journal of Neuropsychology, EarlyView.
Abstract Prior studies in multiple sclerosis (MS) suggest preserved recognition of positive emotions despite deficits for negative ones, but this dissociation may reflect methodological limitations (valence‐asymmetry: positive‐valence being limited to happiness/joy in basic‐emotion sets). This study tested whether emotion–recognition deficits in MS are
Laurent Zikos, Antonio Pinti, Henrique Sequeira, Cécile Donze, Arnaud Kwiatkowski, Béatrice Degraeve, Bruno Lenne   +6 more
wiley   +1 more source

Concurrent Temperature and Light Intensity Fluctuations Promote Stomatal Opening and Non‐Steady State Photosynthesis

Plant, Cell &Environment, EarlyView.
ABSTRACT In nature, fluctuations in light intensity (FL) are tightly coupled to rapid changes in leaf temperature (Tleaf), yet the short‐term physiological effects of these concurrent drivers remain largely unresolved. Here, we combined rapid infrared induced Tleaf fluctuations with controlled step changes in light intensity for leaf gas exchange ...
Samikshya Shrestha, Elias Kaiser, Sarah R. Berman, Maarten L. J. Wassenaar, Tom van den Berg, Evi Mavrou, Leo F. M. Marcelis, Silvere Vialet‐Chabrand   +7 more
wiley   +1 more source

Sex‐Modulated TACSTD2 Methylation and Hormone‐Receptor Axis Interactions in Glioblastoma: Insights Toward Mechanistic Understanding

Computational and Systems Oncology, Volume 6, Issue 1, December 2026.
Sex‐stratified analyses of the TCGA and CGGA cohorts have identified promoter‐proximal TACSTD2 CpG sites where methylation shows opposite survival associations in males and females, is independent of copy number, and correlates with TACSTD2 expression.
Tahreem Fatima
wiley   +1 more source

Harmonic Characteristics of Variable Frequency System Based on PWM Rectifier

Kongzhi Yu Xinxi Jishu, 2017
In order to solve the problem of harmonic harm of PWM rectifier variable frequency system in power transmission and distribution system, it introduced the basic principle of PWM rectifier control and SPWM modulation according to the main circuit topology
MING Kaiyun
doaj  

Model‐based fault diagnosis and fault tolerant control in safety‐critical chemical reactors: An experimental study

AIChE Journal, Volume 72, Issue 7, July 2026.
Abstract This study investigates a fault‐tolerant control (FTC) approach for continuous stirred‐tank reactors (CSTR), emphasizing the importance of timely interventions to ensure operational safety under fault conditions. A systematic methodology combining residual‐based fault estimation and Dynamic Safety Margin (DSM) monitoring is developed to guide ...
Pu Du, Ritu Ranjan, Benjamin Wilhite, Costas Kravaris   +3 more
wiley   +1 more source

A Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller

International Journal of Adaptive Control and Signal Processing, Volume 40, Issue 6, Page 1196-1220, June 2026.
Block Diagram of the Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller. ABSTRACT This article introduces a discrete‐time robust adaptive one‐sample‐ahead preview super‐twisting sliding mode controller. A stability analysis of the controller by Lyapunov criteria is developed to demonstrate its robustness in handling both ...
Guilherme Vieira Hollweg, Paulo Jefferson Dias de Oliveira Evald, Shivam Chaturvedi, Hilton Abilio Gründling, Rodrigo Varella Tambara, Wencong Su   +5 more
wiley   +1 more source

Integral Sliding Mode Controller for Modular Multilevel Inverter‐Based PMSM Drives

Engineering Reports, Volume 8, Issue 6, June 2026.
The primary contribution of this work is the development of an integral sliding mode controller (ISMC) designed for motor speed and current regulation, optimized to enhance control performance with the unique MMLI structure. The proposed MMLI architecture offers a reduced number of switching components and passive elements, thereby minimizing system ...
Taiea A. Ahmed, Ahmed Ismail M. Ali, Anouar Belahcen, Essam E. M. Mohamed, Mohamed A. Ismeil, Zuhair Muhammed Alaas, Abdel‐Raheem Youssef   +6 more
wiley   +1 more source

Lifetime-Based Discontinuous PWM for Cascaded H-Bridge Converters

IEEE Access
The cascaded H-bridge (CHB) is an attractive converter topology because it can provide voltage and power scalability. However, due to the difference in electrical and thermal characteristics of power devices, the CHB can be composed of cells with unequal
Anas Ibrahim, Mohamed Salem, Tomonobu Senjyu, Soichiro Ueda, Dahaman Ishak, Mahmood Swadi   +5 more
doaj   +1 more source

Robust Control Using a Matrix Converter to Enhance Wind Turbine Systems

Energy Science &Engineering, Volume 14, Issue 6, Page 2785-2815, June 2026.
This study uses a more efficient and effective solution to improve the operational performance of a wind turbine‐based power system. This system uses a doubly fed induction generator and relies on a matrix converter and fractional‐order proportional–integral controller.
Sihem Ghoudelbourk, Habib Benbouhenni, Adil Yahdou, Zakaria Mohamed Salem Elbarary, Nicu Bizon   +4 more
wiley   +1 more source