Zobrazeno 1 - 10
of 3 904
pro vyhledávání: '"Damping factor"'
Publikováno v:
International Journal of Electrical Power & Energy Systems, Vol 158, Iss , Pp 109899- (2024)
As sustainable natural sources such as wind and solar are increasingly integrated into power grids, conventional fossil fuel-based generating units will be gradually replaced, resulting in enormous pressure on frequency regulation of the novel power
Externí odkaz:
https://doaj.org/article/f6bb9f85b1304abab86776fd886a5d26
Publikováno v:
Jurnal Teknik Sipil dan Perencanaan, Vol 25, Iss 2, Pp 211-217 (2023)
A bored pile provides a large capacity obtained to toe and friction pile to support some loads such as axial, lateral, and tensile due to hydrostatic pressure or overturning moment. Static and dynamic load tests are often carried out to validate pile
Externí odkaz:
https://doaj.org/article/3916533c719b44e2873f16e4a2a468d6
Autor:
Miran Merhar
Publikováno v:
Polymers, Vol 16, Iss 10, p 1313 (2024)
The damping of spruce wood is analysed at different moisture content levels for the first three vibration modes of tangentially and radially vibrating samples. Two methods were used to determine the damping. The first was the vibration envelope fitti
Externí odkaz:
https://doaj.org/article/4b320683e6bf4b1ca47a993593b422f3
Publikováno v:
Frontiers in Energy Research, Vol 11 (2023)
Virtual synchronous generator (VSG) control addresses the issue of decreasing microgrid standby inertia caused by the rise in wind turbines and photovoltaic (PV) penetration. However, various types of perturbations occur frequently making the traditi
Externí odkaz:
https://doaj.org/article/93929280b7b4481296d880c0c1647c9e
Autor:
Eduardo Juarez-Mendoza, Francisco Asahel del Angel-Diaz, Alejandro Diaz-Sanchez, Esteban Tlelo-Cuautle
Publikováno v:
Journal of Low Power Electronics and Applications, Vol 14, Iss 1, p 14 (2024)
This manuscript shows the CMOS design of Lorenz systems using operational transconductance amplifiers (OTAs). Two Lorenz systems are then synchronized in a master–slave topology and used to implement a CMOS secure communication system. The contribu
Externí odkaz:
https://doaj.org/article/7f5172d5d21a440d83ed1c8f45adedb2
Publikováno v:
Symmetry, Vol 16, Iss 3, p 278 (2024)
The accurate identification of the broadband oscillation mode is the premise of solving the resonance risk of new energy stations. Reviewing the traditional Prony algorithm, the problems of the high model order and poor noise immunity in broadband os
Externí odkaz:
https://doaj.org/article/383d322933e94a1bbac4002f3bcc295c
Publikováno v:
Materials Research Express, Vol 11, Iss 4, p 045505 (2024)
This work provides an insight of the free vibration behaviour based on experimental modal analysis of hybrid natural fibre reinforced polymer composites fabricated via compression moulding method. This study aims to study the impact of different poly
Externí odkaz:
https://doaj.org/article/51f67210c1104a97840a9d8e523ac7b8
Publikováno v:
Sensors, Vol 23, Iss 24, p 9808 (2023)
This paper presents a low-voltage low-power chopper-stabilized differential difference amplifier (DDA) realized using 40 nm CMOS technology. Operating with a supply voltage of 0.5 V, a three-stage DDA has been employed to achieve an open-loop gain of
Externí odkaz:
https://doaj.org/article/45691124cc674aa2ad399b2fa10bd086
Mechanical, Modal and Harmonic Behavior Analysis of Jute and Hemp Fiber Reinforced Polymer Composite
Publikováno v:
Journal of Natural Fibers, Vol 20, Iss 1 (2023)
In this study, the dynamic structural and mechanical properties of the polymer composite with natural fiber reinforcement have been investigated experimentally and numerically. First of all, three different types, one-, three- and five-layered jute-e
Externí odkaz:
https://doaj.org/article/4113cce5632740afa67c8f3af1fb2279
Autor:
Tien Dat Pham, Won-Kee Hong
Publikováno v:
Journal of Asian Architecture and Building Engineering, Vol 21, Iss 2, Pp 448-468 (2022)
This study provided an investigation of strain evolutions in bonded and unbonded prestressed reinforced concrete beams via nonlinear finite element analyses considering concrete plasticity and concrete-damaged plasticity. Usually, non-convergence pro
Externí odkaz:
https://doaj.org/article/6dc568068c51400ea4f98babd53c1a59