Results 21 to 30 of about 17,054,748 (190)

Equivalent Analysis of Thermo-Dynamic Blow-Off Impulse under X-ray Irradiation

Applied Sciences, 2021
X-ray thermodynamic effect is an important damage mode for spacecraft. Blow-off impulse as the main thermodynamic damage parameter has been widely studied by combining laboratory and numerical simulations.
Dengwang Wang, Yong Gao, Wei Chen, Jing Zhang, Sheng Wang   +4 more
doaj   +1 more source

Investigations on the Performance of Grounding Device with Spike Rods (GDSR) with the Effects of Soil Resistivity and Configurations

Energies, 2020
In a recently published work, the characteristics of a new grounding device with spike rods (GDSR) with various arrangements of ground electrodes under high magnitude impulse currents (up to 16 kA), was investigated.
Abdul Wali Abdul Ali, Nurul Nadia Ahmad, Normiza Mohamad Nor, Nur Farahi Idris, Farhan Hanaffi   +4 more
doaj   +1 more source

Cluster-Delay Mean Square Consensus of Stochastic Multi-Agent Systems with Impulse Time Windows

Entropy, 2021
This paper investigates the cluster-delay mean square consensus problem of a class of first-order nonlinear stochastic multi-agent systems with impulse time windows.
Huan Luo, Yinhe Wang, Ruidian Zhan, Xuexi Zhang, Haoxiang Wen, Senquan Yang   +5 more
doaj   +1 more source

An improved rotating HF signal injection method based on FIR filters for state estimation of BPMSM sensorless control

Advances in Mechanical Engineering, 2017
An improved rotating high-frequency signal injection method based on a finite impulse-response filter for state estimation of bearingless permanent magnet synchronous motor sensorless control is developed in this article.
Wei Ji, Guoding Shi, Bo Xu, Jian Xu
doaj   +1 more source

Measuring method for partial discharges in a high voltage cable system subjected to impulse and superimposed voltage under laboratory conditions

International Journal of Electrical Power & Energy Systems, 2020
A partial discharge (PD) measuring system has been deployed in order to identify and measure PD in a high voltage (HV) cable joint under impulse and superimposed voltages under laboratory conditions. The challenge is to enable the detection of PD during the impulse conditions. The method of measurement has been investigated by introducing an artificial
Wu, J. (author), Mor, A. R. (author), van Nes, P.V.M. (author), Smit, J.J. (author)   +3 more
openaire   +3 more sources

Electroacoustic Analysis and Optimization of Needle-Rod Electrodes for Low-Power Impulse Sound Source

Sensors
In acoustic deep detection technology, conventional monopole, dipole, and phased-array sound sources are far inferior to impulsive sound sources in frequency and amplitude.
Xiao Du, Jing Zhou, Xu Gao
doaj   +1 more source

Growth of Ti-C nanocomposite films by reactive high power impulse magnetron sputtering under industrial conditions

Surface and Coatings Technology, 2012
Titanium carbide (TiC) films were deposited employing high power impulse magnetron sputtering (HiPIMS) and direct current magnetron sputtering (DCMS) in an Ar-C2H2 atmosphere of various composition ...
Samuelsson, Mattias, Sarakinos, Kostas, Högberg, Hans, Lewin, Erik, Jansson, Ulf, Wälivaara, Bengt, Ljungcrantz, Henrik, Helmersson, Ulf   +7 more
openaire   +4 more sources

Hardware and power management for high power impulse magnetron sputtering

, 2019
The work that led to the development of the HiPIMS technique was initiated at the Moscow Engineering and Physics Institute (MEPhI) in the late 1960s, where high power pulses were applied to diode sputter sources.
Zdeněk Hubička, Gudmundsson, Jon Tomas,, Jon Tomas Gudmundsson, Lundin, D., Hubička, Z., Daniel Lundin, Petter Larsson, Larsson, P.   +7 more
core   +1 more source

Effect of Enhancement Material on the Performance of Ground Electrodes Under Impulse Conditions

IEEE Access
Among the factors that affect the soil resistivity is the chemical content in soil, where the ionic conduction is expectedly increased and the soil resistivity is reduced.
Usman Muhammad, Nurul Nadia Ahmad, Normiza Mohamad Nor, Fazlul Aman   +3 more
doaj   +1 more source

Impulse ageing of polymeric materials

, 2011
Impulse over-voltage is a common phenomenon in electric power systems. A switching impulse is created by a switching surge or local fault while a lightning impulse is due to direct lightning strike to high voltage plant such as an overhead line.
Dao, Ngoc Long
core   +1 more source