نتایج جستجو برای: nonlinear frequency

تعداد نتایج: 687617  

Journal: :Physical Review Letters 2021

An optical frequency comb consists of a set discrete and equally spaced frequencies has found wide applications in the synthesis over broad spectral electromagnetic wave precise metrology. Despite analogies between magnons photons many aspects, analogue magnonic system not been reported. Here, we theoretically study magnon-skyrmion interaction find that (MFC) can be generated above threshold dr...

Journal: :International Journal of Power Electronics and Drive Systems 2021

The work deals finite frequency H<sub>∞</sub> control design for continuous time nonlinear systems, we provide sufficient conditions, ensuring that the closed-loop model is stable. Simulations will be gifted to show level of attenuation a lower can by our method obtained developed where further comparison.

1999
Xugang Lu Daowen Chen

* This work is supported by national sciences fund, No. 69635020 Abstract It is no doubt that our auditory system is a nonlinear processing system in speech signal perception. In this paper many aspects of nonlinear processing are discussed. First Nonlinear frequency resolution, that is nonlinear or nonuniform sampling theory in auditory system, second, nonlinear combination of different freque...

2008
Jingpin JIAO Bruce W. DRINKWATER Simon A. NEILD P D WILCOX Bin WU Cunfu HE

In this paper, guided wave health monitoring in plate structure for detection of nonlinear contact scatter is conduct using vibration modulation technique. By time-frequency analysis of modulated guided wave series, the nonlinear responses at frequency of vibration are extracted out and used for defect imaging. It is shown that the nonlinear guided wave imaging method based on vibration modulat...

2008
Keang-Po Ho

The characteristic function of soliton phase jitter is found analytically when the soliton is perturbed by amplifier noise. In additional to that from amplitude jitter, the nonlinear phase noise due to frequency and timing jitter is also analyzed. Because the nonlinear phase noise is not Gaussian distributed, the overall phase jitter is also non-Gaussian. For a fixed mean nonlinear phase shift,...

2014
Najeeb Alam Khan Muhammad Jamil Asmat Ara Leonid Berezansky

We applied a new approach to obtain natural frequency of the nonlinear oscillator with discontinuity. He’s Hamiltonian approach is modified for nonlinear oscillator with discontinuity for which the elastic force term is proportional to sgn u . We employed this method for higherorder approximate solution of the nonlinear oscillator equation. This property is used to obtain approximate frequency-...

2008
X. J. Jing Z. Q. Lang S. A. Billings Xing Jian Jing Stephen A. Billings

Nonlinear systems usually have complicated output frequencies in the frequency domain. For the class of nonlinear Volterra systems, some interesting properties for system output frequencies are studied in this paper. These properties provide a novel insight into the output frequencies of Volterra systems, i.e., the periodicity of the output frequencies. They also demonstrate several novel frequ...

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