Results 51 to 60 of about 34,421 (359)

Dual‐Mode Magnetic Elastomer for On‐Demand Motion and Degradation

Advanced Functional Materials, EarlyView.
A dual‐mode magnetic elastomer is introduced, enabling DC field‐driven programmable actuation and AC field‐driven magnetothermal degradation. GHz‐range magnetic fields generate ultrafast heating of magnetic nanoparticles that activates cleavage of the silicone elastomer matrix.
Jieun Han, Hyun An, Min‐Ha Oh, Yu‐Lim Lee, Woojin Jeon, Kyung‐Sub Kim, Jae‐Hwan Lee, Seungmin Kang, Yoon‐Nam Kim, Ji‐Won Kang, Daewhan Kim, Min Sang Kwon, Sang‐Koog Kim, Seung‐Kyun Kang   +13 more
wiley   +1 more source

Wide frequency range active damping of LCL-filtered grid-connected converters

The Journal of Engineering, 2019
It can be challenging to guarantee the stability of grids with many converters with LCL filters connected due to the presence of multiple resonances within the system. This paper presents an active damping technique to mitigate multiple resonance effects
Abdelhady Ghanem, Mohamed Rashed, Mohamed Rashed, Mark Sumner, Mohamed Adel El-sayes, Ibrahim. I. I. Mansy   +5 more
doaj   +1 more source

Using a damper amplification factor to increase energy dissipation in structures [PDF]

, 2015
Fluid dampers are an important tool for dissipating unwanted vibrations in a range of engineering structures. This paper examines the effects of amplifying the displacements transferred to a non-linear damper, to increase the effectiveness of the damper ...
Londoño Monsalve, Julian Mauricio, Londoño, Julián M., Wagg, David J., Neild, Simon A, Neild, Simon A., Wagg, David J   +5 more
core   +1 more source

Integrated Field‐Free SOT Domain‐Wall Synapses and MTJ Stochastic Neurons for Hardware Boltzmann Machines

Advanced Functional Materials, EarlyView.
Field‐free spin‐orbit torque domain‐wall synapses integrated with stochastic MTJ neurons enable compact hardware Boltzmann machines. Leveraging intrinsic stochasticity and multi‐level conductance, the system achieves efficient probabilistic learning with high accuracy, demonstrating a scalable spintronic platform for energy‐efficient edge AI.
Aijaz H. Lone, Meng Tang, Camelia Florica, Bin He, Jingkai Xu, Selma Amara, Georgian Melinte, Xixiang Zhang, Gianluca Setti   +8 more
wiley   +1 more source

A weighted damping strategy for improving the adaptability of converter to weak grid

Diance yu yibiao
Active damping can significantly improve the adaptability of converter to weak grid, however, when the PCC (point of common coupling) voltage harmonics are used for active damping control, the suppression ability of the system on the background harmonic ...
XU Jia, YANG Shude, ZHANG Xinwen
doaj   +1 more source

3D Printing Innovations in Polymeric Porous and Patterned Architecture

Advanced Functional Materials, EarlyView.
Polymeric foams occupy a unique structural space between dense solids and open networks, where engineered void fraction governs mechanical compliance, thermal resistance, and mass transport. Additive manufacturing now enables precise spatial control over cellular architecture, unlocking designer foam structures across applications spanning crash ...
Dhanush Patil, Sri Vaishnavi Thummalapalli, Clarissa Westover, Arunachalam Ramanathan, M. Taylor Sobzcak, Roumika Patil, Qixuan Xiang, Tiantian Li, Sui Yang, Timothy E. Long, Hongyue Sun, Xianqiao Wang, Yang Liu, Kenan Song   +13 more
wiley   +1 more source

Semi-Active Damping of Mechanical Vibrating Systems Using Variable Stiffness Actuator

Al-Khawarizmi Engineering Journal, 2018
In this research, a variable stiffness actuator is proposed to enhance the damping of the mechanical vibrating system. The frequency response analysis of the vibrating system is dependant in order to analyze and synthesis this semi-active damping, where ...
Yarub Omer Naji Al-Azzawi
doaj  

Damping characteristic analysis of grid-forming PMSG-based WT under different power oscillation damping controls

International Journal of Electrical Power & Energy Systems
In this paper, the damping characteristics of the grid-forming permanent magnet synchronous generator (PMSG)-based wind turbine (WT) under different damping controls are investigated considering energy efficiency.
Xiaotian Yuan, Zhengchun Du, Yujun Li, Tong Qu, Han Jiang   +4 more
doaj   +1 more source

Passivity Based Damping Design for Grid-Connected Converter With Improved Stability

IEEE Access, 2019
The impedance interactions between weak grid and LCL-filtered converter can bring severe harmonic resonance. Recently, frequency domain passivity theory has been applied to converter damping design.
Huaiyuan Liu, Lei Li, Yuchao Liu, Dianguo Xu, Qiang Gao   +4 more
doaj   +1 more source

A study on LQG/LTR control for damping inter-area oscillations in power systems [PDF]

, 2007
Published ...
Chaudhuri,B., I.M. Jaimoukha (7207067), Zolotas,A.C., Jaimoukha,I.M., Petr Korba (7209479), Korba,P., B. Chaudhuri (7207064), Balarko Chaudhuri (16154039), Imad M Jaimoukha (16154048), Argyrios C. Zolotas (7122554), Argyrios C Zolotas (16154045)   +10 more
core   +1 more source