Results 1 to 10 of about 188,305 (133)

Behavioral Modeling of Memristors under Harmonic Excitation [PDF]

open access: yesMicromachines, 2023
Memristors are devices built on the basis of fourth passive electrical elements in nanosystems. Because of the multitude of technologies used for memristor implementation, it is not always possible to obtain analytical models of memristors.
Elena Solovyeva, Artyom Serdyuk
doaj   +2 more sources

Analysis of scaffolding harmonic excitation [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2023
Scaffolding is equipment usually used at construction sites. A scaffolding structure is lightweight and made of elements used many times. The characteristics of scaffolding make it susceptible to dynamic actions present at the structure or occurring ...
Jarosław Bęc   +2 more
doaj   +1 more source

Brushless Excitation Principle and Experimental Verification of Hybrid Excitation Synchronous Generator Based on Harmonic Magnetic Field

open access: yesIEEE Access, 2022
It is well known that the air-gap magnetic field of the permanent magnet synchronous generator (PMSG) is difficult to adjust. To overcome this challenge while maintaining the brushless feature of PMSGs, a hybrid excitation synchronous generator (HESG ...
Yonghong Xia   +4 more
doaj   +1 more source

An improved harmonic resonance mode analysis method for distribution power grid

open access: yesEnergy Reports, 2022
Harmonic resonance endangers seriously safe and reliable operation of power grid and an appropriate resonance harmonic analysis method is of great importance.
Lianxue Gao, Ran Zhang
doaj   +1 more source

High-Harmonic Injection-Based Brushless Wound Field Synchronous Machine Topology

open access: yesMathematics, 2021
This paper discusses the design and analysis of a high-harmonic injection-based field excitation scheme for the brushless operation of wound field synchronous machines (WFSMs) in order to achieve a higher efficiency.
Syed Sabir Hussain Bukhari   +4 more
doaj   +1 more source

An harmonic equivalent excitation method for random vibration response

open access: yesAdvances in Mechanical Engineering, 2022
Many loads on engineering structures had obvious randomness, such as earthquakes, wind, sea waves, uneven pavement, etc. The calculation and analysis of random vibration were complicated and inefficient, which has perplexed the development of engineering
Kaiwei Wu, Chuanbo Ren, Lianzheng Li
doaj   +1 more source

Improved Speech Synthesis Algorithm Based on Harmonic Plus Noise Excitation Model [PDF]

open access: yesJisuanji gongcheng, 2016
The excitation signal used in the traditional Hidden Markov Model(HMM)-based speech synthesis algorithm is either a pulse train or white gaussian noise,and the synthesis speech sounds buzzy.An improved speech synthesis algorithm based on harmonic plus ...
GE Yongkan,YU Fengqin
doaj   +1 more source

Vibration Control of Time-Varying Delay under Complex Excitation

open access: yesMicromachines, 2021
The existing available research outcomes on vibration attenuation control for time-delay feedback indicate that, for the delay dynamic vibration absorber with fixed time-delay control parameters, under harmonic excitation, a good vibration attenuation ...
Kaiwei Wu   +6 more
doaj   +1 more source

Toward the possibility of 229Th isomeric nuclear state excitation by two-color laser field [PDF]

open access: yesEPJ Web of Conferences, 2019
The process of high harmonic generation (HHG) has a wide area of different applications, in particular, in nanoscale imaging, study the nanoscale energy transport in complex molecules and solids, probe the charge and spin dynamics with the femtosecond ...
Andreev Anatoli   +3 more
doaj   +1 more source

Performance Analysis of Brushless Wound Rotor Vernier Machine by Utilizing Third Harmonic Field Excitation

open access: yesIEEE Access, 2023
In this paper, a self-excited topology by utilizing third harmonic field excitation is proposed for realizing the brushless operation of the Wound Rotor Vernier Machine (WRVM).
Sheikh Yasir Hammad   +5 more
doaj   +1 more source

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