Results 61 to 70 of about 61,851 (267)

Investigation of the Hybrid Switching Process Using Different Test Setups and Measurement Techniques

IEEE Access
This report describes the measurement of basic parameters which are important for the investigation of the switching process in a hybrid switching device. First, structure and function of a hybrid switch are explained.
Arno Bernhardt, Matthias Streck, Frank Berger, Hendrik Kopf, Peter Steegmuller, Ralf Methling, Diego Gonzalez, Dirk Uhrlandt, Xiaofei Guo, Florian Schilling, Marco Kellermann, Sebastian Schmauer, Arndt Ehrhardt   +12 more
doaj   +1 more source

Natural Bone‐Derived Ceramic Scaffolds Functionalized with Chitosan‐Gold, Chitosan‐Magnesium, and Chitosan‐Zinc for Enhanced Antibacterial Activity

Advanced Engineering Materials, EarlyView.
This study reports the development of antibacterial ceramic scaffolds derived from natural bovine bone. The bones were processed through sequential boiling and hydrogen peroxide treatment to remove organic matter, producing porous, mineral‐rich scaffolds.
Mohamad Hassan Taherian, Anh Thi Le, Anh Thi Van Le, Dung My Thi Dang, Tin Chanh Duc Doan, Chien Mau Dang, Martin Bolduc   +6 more
wiley   +1 more source

Machine Learning‐Supported Analysis for Predicting and Visualizing Nonlinear Relationships Between Material Properties in Electroplated Chromium Layers

Advanced Engineering Materials, EarlyView.
This study applies machine learning regression to predict chromium layer thickness in decorative trivalent chromium electroplating, using 441 experiments from laboratory‐scale (1L) and pilot‐scale (14L) setups. Tree‐based models, particularly CatBoost, outperformed linear regression by capturing nonlinear parameter interactions (R2$R^2$ up to 0.77 ...
Christoph Baumer, Christopher Mai, Luca Eisentraut, Andreas Bund, Ricardo Buettner   +4 more
wiley   +1 more source

Hybrid Precoding for Beamspace MIMO Systems With Sub-Connected Switches: A Machine Learning Approach

IEEE Access, 2019
By employing lens antenna arrays, the number of radio frequency (RF) chains in millimeter-wave (mmWave) communications can be significantly reduced. However, most existing studies consider the phase shifters (PSs) as the main components of the analog ...
Ting Ding, Yongjun Zhao, Lixin Li, Dexiu Hu, Lei Zhang   +4 more
doaj   +1 more source

Microstructure, Thermal Transport, and Dry‐Sliding Tribology of Powder‐Metallurgy Al7075 Composites Reinforced With Sol–Gel‐Derived ZnO–rGO Hybrid Nanoparticles

Advanced Engineering Materials, EarlyView.
Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal, Cevher Kursat Macit, Merve Ayık, Hakan Tutumlu   +3 more
wiley   +1 more source

Electrified Damage in Motion Systems

Advanced Engineering Materials, EarlyView.
The electrified damage in motion systems is a fundamental framework presenting the degradation pathway arising from the coupling of electrical energy transport with mechanical contact and interfacial chemistry. The framework positions electrified damage as a distinct degradation regime with unique characteristic surface morphologies and failures of ...
M. Humaun Kabir, Angelina Nguyen, Hong Liang   +2 more
wiley   +1 more source

Research on topological structure and simulation of hybrid DC circuit breaker

The Journal of Engineering, 2019
At present, the hybrid DC circuit breaker (ABB company's Hybrid DC circuit breaker as the representative scheme) must be equipped with the radiator because of a long-time current passing through the power electronic devices in the load-control-switch ...
Chu Zhuang, Xu Bing, Yu Zhanqing, Wang Nianhua   +3 more
doaj   +1 more source

Optoelectronic Synaptic Devices Using Molecular Telluride Phase‐Change Inks for Three‐Factor Learning

Advanced Functional Materials, EarlyView.
Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner, Dhananjeya Kumaar, Giacomo Torti, Killian Keller, Till Zellweger, Florian M. Schenk, Christoph Weilenmann, Daniel Chelladurai, Vara Prasad Jonnalagadda, Ghazi Sarwat Syed, Vanessa Wood, Jürg Leuthold, Alexandros Emboras, Maksym Yarema, Mathieu Luisier   +14 more
wiley   +1 more source

Static voltage sharing technology of multi-break mechanical switch for hybrid HVDC breaker

The Journal of Engineering, 2019
The hybrid high-voltage direct current (HVDC) breaker combines mechanical and power electronics switching that enables it to interrupt power flows within a few milliseconds.
Qiuyu Yang, Daochun Huang, Xuezong Wang, Zhibin Qiu, Jiangjun Ruan   +4 more
doaj   +1 more source

Stability for switched dynamic hybrid systems

Mathematical and Computer Modelling, 2013
Abstract This paper investigates quadratic stabilizability for switched dynamic hybrid systems with polytopic uncertainties via a common Lyapunov matrix or via closed loop linear quadratic state feedback regulators. The switched linear systems for stable closed loop matrices can guarantee the global asymptotical stability for any switched linear ...
openaire   +1 more source