Results 91 to 100 of about 7,745 (207)

Determination of Approximate Periods of Duffing-harmonic Oscillator

open access: yesWalailak Journal of Science and Technology, 2014
We introduced an analytical technique based on harmonic balance method (HBM) to determine approximate periods of a nonlinear Duffing-harmonic oscillator. Generally, a set of nonlinear algebraic equations are appeared when HBM is formulated.
Md. Alal HOSEN
doaj   +1 more source

Analysis of nonlinear oscillators using volterra series in the frequency domain Part I : convergence limits [PDF]

open access: yes, 2009
The Volterra series representation is a direct generalisation of the linear convolution integral and has been widely applied in the analysis and design of nonlinear systems, both in the time and the frequency domain.
Billings, S.A., Li, L.M.
core  

A novel analytical approximation technique for highly nonlinear oscillators based on the energy balance method

open access: yesResults in Physics, 2016
In the present paper, a novel analytical approximation technique has been proposed based on the energy balance method (EBM) to obtain approximate periodic solutions for the focus generalized highly nonlinear oscillators.
Md. Alal Hosen   +3 more
doaj   +1 more source

Variational calculation of the period of nonlinear oscillators

open access: yes, 2004
The problem of calculating the period of second order nonlinear autonomous oscillators is formulated as an eigenvalue problem. We show that the period can be obtained from two integral variational principles dual to each other.
Benguria, R. D., Depassier, M. C.
core   +1 more source

PENYELESAIAN PERSAMAAN DUFFING OSILATOR PADA APLIKASI WEAK SIGNAL DETECTION MENGGUNAKAN METODE AVERAGING

open access: yesJurnal MIPA, 2015
Pada persamaan diferensial terdapat klasifikasi yaitu persamaan diferensial linear dan persamaan diferensial tak linear. Salah satu contoh dari persamaan diferensial tak linear yaitu persamaan Duffing.
Z A Tamimi, S B Waluya
doaj  

Haar Wavelet Operational Matrix Method for Fractional Oscillation Equations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2014
We utilized the Haar wavelet operational matrix method for fractional order nonlinear oscillation equations and find the solutions of fractional order force-free and forced Duffing-Van der Pol oscillator and higher order fractional Duffing equation on ...
Umer Saeed, Mujeeb ur Rehman
doaj   +1 more source

EXACT SOLUTIONS TO CUBIC DUFFING EQUATION FOR A NONLINEAR ELECTRICAL CIRCUIT

open access: yesVisión Electrónica, 2014
This work provides an exact solution to a cubic Duffing oscillator equation with initial conditions and bounded periodic solutions. This solution is expressed in terms of the Jacobi elliptic function (cn).
Álvaro H. Salas S., Jairo E. Castillo H
doaj  

Kurtosis-guided Duffing for weak signal detection

open access: yesEURASIP Journal on Advances in Signal Processing
Detecting weak signals embedded in strong noise remains a critical challenge across numerous engineering fields, including mechanical fault diagnosis, underwater acoustics, and biomedical monitoring. The Duffing oscillator is a well-established nonlinear
Haiyang Lou, Rujiang Hao, Qiang Xue
doaj   +1 more source

Partly Duffing Oscillator Stochastic Resonance Method and Its Application on Mechanical Fault Diagnosis

open access: yesShock and Vibration, 2016
Due to the fact that the slight fault signals in early failure of mechanical system are usually submerged in heavy background noise, it is unfeasible to extract the weak fault feature via the traditional vibration analysis.
Jian Dang   +4 more
doaj   +1 more source

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