Results 31 to 40 of about 5,619 (226)

A Hybrid PWM Technique to Improve the Performance of Voltage Source Inverters

IEEE Access, 2023
Due to the rapid advancement of power semiconductor devices, the use of voltage source inverters (VSIs) has gained widespread acceptance. As a consequence, the performance of the voltage source inverter has emerged as a critical aspect that is highly ...
Arif Ahmed, Shuvra Prokash Biswas, Md. Shamim Anower, Md. Rabiul Islam, Sudipto Mondal, S. M. Muyeen   +5 more
doaj   +1 more source

Sustainable Poly(Lactic Acid)/Graphene Oxide Bioelectronic Platform for Neurotransmitters Sensing and Tunable Stimulation of Astrocytes

Advanced Materials, EarlyView.
This work introduces sustainable PLA/graphene oxide bioelectronic interfaces featuring electrodes with tunable conductivity and strong electrocatalytic performance. These platforms were used to implement a new method for tuning astrocyte Ca2+ signaling and for the efficient detection of key biomarkers.
Alessandra Scidà, Giulia Cazzador, Roberta Fabbri, Matteo Calosi, Alessandro Silvestri, Andrea Candini, Fabiola Liscio, Franco Corticelli, Aikaterini Konstantoulaki, Andrea D'Iorio, Marco Caprini, Vincenzo Palermo, Monica Bertoldo, Valentina Benfenati, Chiara Zanardi, Emanuele Treossi   +15 more
wiley   +1 more source

Hybrid Multi-Carrier PWM Technique Based on Carrier Reconstruction for Cascaded H-bridge Inverter

IEEE Access, 2019
In response to the deficiencies that the Carrier Phase Shift (CPS-PWM) and Carrier In-Phase Disposition (IPD-PWM) modulation techniques are applied to Cascaded H-bridge (CHB) multilevel inverters, combined with the advantages of the two techniques, a ...
Manyuan Ye, Le Chen, Lixuan Kang, Song Li, Junfei Zhang, Han Wu   +5 more
doaj   +1 more source

Gait Analysis of Pak Biawak: A Necrobot Lizard Built using the Skeleton of an Asian Water Monitor (Varanus Salvator)

Advanced Robotics Research, EarlyView.
Pak Biawak, a necrobot, embodies an unusual fusion of biology and robotics. Designed to repurpose natural structures after death, it challenges conventional boundaries between nature and engineering. Its movements are precise yet unsettling, raising questions about sustainability, ethics, and the untapped potential of biointegrated machines.
Leo Foulds, Donan Satria Yudha, Parvez Alam   +2 more
wiley   +1 more source

Compliant Pneumatic Feet with Real‐Time Stiffness Adaptation for Humanoid Locomotion

Advanced Robotics Research, EarlyView.
A compliant pneumatic foot with real‐time variable stiffness enables humanoid robots to adapt to changing terrains. Using onboard vision and pressure control, the foot modulates stiffness within each gait cycle, reducing impact forces and improving balance. The design, cast in soft silicone with embedded air chambers and Kevlar wrapping, offers durable,
Irene Frizza, Hiroshi Kaminaga, Philippe Fraisse, Gentiane Venture   +3 more
wiley   +1 more source

Comparative study of single-phase multilevel cascaded transformerless inverters with different modulation methods

Engineering Science and Technology, an International Journal
This paper presents an in-depth exploration of a single-phase multilevel cascaded H5 (CH5) transformerless inverter employing both phase-shifted PWM (PS-PWM) and level-shifted PWM (LS-PWM) methodologies.
Hakki Mollahasanoglu, Merve Mollahasanoglu, Emre Ozkop   +2 more
doaj   +1 more source

Optimization method for precise control of proportional electromagnetic valve for automatic drive of agricultural machinery

浙江大学学报. 农业与生命科学版, 2018
To solve the problems of pulse width modulation (PWM) proportional solenoid valve control mode, such as large current ripple and low control precision, a method of dual PWM was adopted to control the proportional solenoid valve.
GENG Biao, LI Huan, FANG Hui, ZHANG Shengrong, XU Wei   +4 more
doaj   +1 more source

MicroRoboScope: A Portable and Integrated Mechatronic Platform for Magnetic and Acoustic Microrobotic Experimentation

Advanced Robotics Research, EarlyView.
This work presents the MicroRoboScope, a highly integrated, compact, and portable microrobotic experimentation platform combining electromagnetic and acoustic actuation with real‐time visual feedback into a single, end‐to‐end device. The system enables closed‐loop control and tracking algorithm experimentation within an accessible and unified hardware ...
Max Sokolich, Yanda Yang, Subrahmanyam Cherukumilli, Fatma Ceren Kirmizitas, Sambeeta Das   +4 more
wiley   +1 more source

Technical Review of PWM Techniques for Dual Active Bridge for EV Charging

Al-Iraqia Journal for Scientific Engineering Research
The need for bidirectional power flow between Electric Vehicle (EV) chargers and the grid via Vehicle-to-Grid (V2G) technology demands efficient power electronic converters.
P.B. Musiiwa, E.T. Kapuya, D. Musademba, D. Simango   +3 more
doaj   +1 more source

The WRHE-PWM Strategy With Minimized THD to Suppress High-Frequency Resonance Instability in Railway Traction Power Supply System

IEEE Access, 2019
Aiming at the high-frequency resonance instability phenomenon in high-speed railways and traction network (simplified as “train-network”) system, a new modulation strategy is proposed.
Xinyu Zhang, Jie Chen, Gang Zhang, Ruichang Qiu, Zhigang Liu   +4 more
doaj   +1 more source