Results 131 to 140 of about 1,179,786 (405)
Capture of free-flying payloads with flexible space manipulators [PDF]
A recently developed control system for capturing free-flying payloads with flexible manipulators is discussed. Three essential points in this control system are, calculating optimal path, using a vision sensor for an external sensor, and controlling ...
Iikura, S. +4 more
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Vibration control of single floor seismically excited structure using active mass damper [PDF]
, 2012 The purpose of this paper is to dampen the vibrations using active mass damper (AMD) flexible structure has been tested using Shake Table by linear cart. The active and passive mass properties has been discussed.
Bhatti, A. Q., Varum, H.
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Modulating Electrochemical CO2 Reduction Pathways via Interfacial Electric Field
Advanced Functional Materials, EarlyView.Engineering interfacial electric fields in Cu/ITO electrodes enables precise control of CO2 reduction pathways. Charge transfer from Cu to ITO generates positively charged Cu species that steer selectivity from ethylene toward methane. This work demonstrates how interfacial electric‐field modulation can direct reaction intermediates and transform ...
Mahdi Salehi +7 more
wiley +1 more source
Shock and Vibration, 2018 During the flight tests of Z-11 helicopter, the previous method for active vibration control of helicopter suffered from the problems of slow convergence speed and big residual vibration.
Yang Lu, Jianbo Feng
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Candidate proof mass actuator control laws for the vibration suppression of a frame [PDF]
The vibration of an experimental flexible space truss is controlled with internal control forces produced by several proof mass actuators. Four candidate control law strategies are evaluated in terms of performance and robustness.
Inman, Daniel J., Umland, Jeffrey W.
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DENTA: A Dual Enzymatic Nanoagent for Self‐Activating Tooth Whitening and Biofilm Disruption
Advanced Functional Materials, EarlyView.The nanoapatite with dual enzymes (DENTA) accumulates in dentinal tubules, reducing hypersensitivity caused by dental nerve exposure and facilitating continuous ROS generation through salivary glucose for effective, long‐term whitening. The dentin structures remain non‐destructive due to the low concentration of ROS, demonstrating excellent cell ...
Junseok Kim +13 more
wiley +1 more source
Active Vibration Control of Boring Bar Vibrations
, 2004 The boring operation is a cumbersome manufacturing process plagued by noise and vibration-related problems. A deep internal boring operation in a workpiece is a classic example of chatter-prone machining. The manufacturing industry today is facing tougher tolerances of product surfaces and a desire to process hard-to-cut materials; vibrations must thus
Andrén, Linus, Håkansson, Lars
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Active vibration control in machinery.
Journal of the Acoustical Society of Japan (E), 1991 This paper reports the recent tendency in the active vibration control of flexible structures which are fundamental components in machinery. In the first half of the paper, it covers basic problems such as making a reduced-order model of the structure required for designing a vibration controller and its state equation representation, proper ...
openaire +2 more sources
Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)
Advanced Functional Materials, EarlyView.Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao +5 more
wiley +1 more source
Optimized design of adaptable vibrations suppressors in semi-active control of circular plate vibrations [PDF]
, 2018 Navid Asmari Saadabad +2 more
openalex +1 more source