Results 101 to 110 of about 3,565 (314)

Advanced Stirling Convertor Dual Convertor Controller Testing at NASA Glenn Research Center in the Radioisotope Power Systems System Integration Laboratory [PDF]

NASA Glenn Research Center developed a nonnuclear representation of a Radioisotope Power System (RPS) consisting of a pair of Advanced Stirling Convertors (ASCs), Dual Convertor Controller (DCC) EMs (engineering models) 2 and 3, and associated support ...
Bell, Mark E., Dolce, James L., Dugala, Gina M., Fraeman, Martin, Frankford, David P., Taylor, Linda M.   +5 more
core   +1 more source

Multiple Twinning in Nacre and Aragonite

Advanced Functional Materials, EarlyView.
Electron backscatter diffraction map of a cluster of geologic aragonite, exhibiting single, double, and triple twins. The whole cluster is approximately 2 cm wide. Colors indicate crystal orientations, so that pixels where the a‐, b‐, and c‐axis is perpendicular to the image plane are green, red, and blue, respectively.
Connor A. Schmidt, William O. Nachlas, Bil Schneider, Xiaoming Mao, Eric Tambutté, Alexander A. Venn, Sylvie Tambutté, Pupa U. P. A. Gilbert   +7 more
wiley   +1 more source

A Single‐Inductor Multiple‐Output Boost Converter With Adaptive Reference Inductor Current Control for LED Applications

IET Power Electronics
This study proposes a single‐inductor multiple‐output (SIMO) converter with adaptive reference inductor current (ARIC) control for low‐power light‐emitting diode (LED) applications.
Pang‐Jung Liu, Yen‐Cheng Chen
doaj   +1 more source

Application of digital control to a magnetic model suspension and balance model [PDF]

The feasibility of using a digital computer for performing the automatic control functions for a magnetic suspension and balance system (MSBS) for use with wind tunnel models was investigated.
Covert, E. E., Haldeman, C. W., Luh, P. B., Whitaker, H. P.   +3 more
core   +1 more source

Electroactive Liquid Crystal Elastomers as Soft Actuators

Advanced Functional Materials, EarlyView.
Electroactive liquid crystal elastomers (eLCEs) can be actuated via electromechanical, electrochemical, or electrothermal effects. a) Electromechanical effects include Maxwell stress, electrostriction, and the electroclinic effect. b) Electrochemical effects arise from electrode redox reactions.
Yakui Deng, Min‐Hui Li
wiley   +1 more source

A stable machine learning based control for bidirectional interleaved DC/DC converter in battery systems

IET Power Electronics
This paper proposes an innovative machine learning‐based control algorithm for the bidirectional interleaved DC/DC converter in battery systems. It offers fast dynamics, gain tuning‐free control design, and guaranteed closed‐loop stability.
Ran Li, Ruigang Wang, Wendong Feng, Tianhao Qie, Yulin Liu, Tyrone Fernando, Herbert HoChing Iu, Xinan Zhang   +7 more
doaj   +1 more source

Reconfigurable nonlinear photonic activation function for photonic neural network based on non-volatile opto-resistive RAM switch. [PDF]

Light Sci Appl, 2022
Xu Z, Tang B, Zhang X, Leong JF, Pan J, Hooda S, Zamburg E, Thean AV.   +7 more
europepmc   +1 more source

Overview of NASA GRC Stirling Technology Development [PDF]

The Stirling Radioisotope Generator (SRG) is currently being developed by Lockheed Martin Astronautics (LMA) under contract to the Depar1ment of Energy (DOE).
Schreiber, Jeffrey, Thieme, Lanny
core   +1 more source

Control of Dual-Opposed Stirling Convertors with Active Power Factor Correction Controllers [PDF]

, 2006
When using recently-developed active power factor correction (APFC) controllers in power systems comprised of dual-opposed free-piston Stirling convertors, a variety of configurations of the convertors and controller(s) can be considered, with ...
Lewandowski, Edward J., Regan, Timothy F., Schreiber, Jeffrey G.   +2 more
core   +1 more source

Electrosynthesis of Bioactive Chemicals, From Ions to Pharmaceuticals

Advanced Functional Materials, EarlyView.
This review discusses recent advances in electrosynthesis for biomedical and pharmaceutical applications. It covers key electrochemical materials enabling precise delivery of ions and small molecules for cellular modulation and disease treatment, alongside catalytic systems for pharmaceutical synthesis.
Gwangbin Lee, Sojin Kim, Myeongeun Lee, Kyoungsuk Jin, Jimin Park   +4 more
wiley   +1 more source