Results 11 to 20 of about 1,090,698 (289)
Physical Realizable Circuit Structure For Adaptive Frequency Hopf Oscillator [PDF]
, 2009 This paper presents a novel structure for the adaptive frequency Hopf oscillator where the nonlinear function is modified to make the system realizable using analog circuit components.
Ahmadi, Arash +3 more
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Nonlinear effects on ENSO's period [PDF]
, 2004 The dependence of ENSO’s period on its amplitude is examined using a simple delayed oscillator model. This dependence is first calculated in the strongly nonlinear regime by extracting and analyzing unstable periodic orbits from the chaotic attractor of ...
Eccles, Fiona, Tziperman, Eli
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Rijke tube: A nonlinear oscillator
Chaos: An Interdisciplinary Journal of Nonlinear Science, 2022 Dynamical systems theory has emerged as an interdisciplinary area of research to characterize the complex dynamical transitions in real-world systems. Various nonlinear dynamical phenomena and bifurcations have been discovered over the decades using different reduced-order models of oscillators.
Krishna Manoj +3 more
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On Free Oscillations of a Quadratic Nonlinear Oscillator [PDF]
Ukrainian Journal of Mechanical Engineering and Materials Science, 2017 A free oscillations of a system with one degree of freedom, caused either by the initial deviation from the stable equilibrium position or by the initial velocity provided by the oscillator in this position was considered. Analytical solutions of the nonlinear Cauchy problem for a second-order differential equation were constructed.
Olshanskiy, Vasyl +2 more
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Mathematics, 2022 The paper deals with modelling and analytical solving of a strong nonlinear oscillator with position-dependent mass. The oscillator contains a nonlinear restoring force, a quadratic damping force and a constant force which excites vibration. The model of
Livija Cveticanin +3 more
doaj +1 more source
A Variational Principle for a Nonlinear Oscillator Arising in the Microelectromechanical System [PDF]
Journal of Applied and Computational Mechanics, 2021 A nonlinear oscillator arising in the microelectromechanical system is complex and it is difficult to obtain a variational principle. This paper begins with a wrong variational formulation and uses the semi-inverse method to obtain a genuine variational ...
Ji-Huan He +2 more
doaj +1 more source
Nonlinear Energy Harvesting [PDF]
, 2013 The concept of harvesting electrical energy from ambient vibration sources has been a popular topic of research in recent years. The motivation behind this research is largely due to recent advancements in microelectromechanical systems (MEMS ...
Green, P.L.
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International Journal of Differential Equations, 2011 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).
Najeeb Alam Khan +2 more
doaj +1 more source
Untangling El Niño‐La Niña Asymmetries Using a Nonlinear Coupled Dynamic Index
Geophysical Research Letters, 2020 The linear recharge oscillator model for the El Niño–Southern Oscillation (ENSO) was expanded to a nonlinear model, thus allowing identification of a nonlinear dynamic ENSO index.
Soong‐Ki Kim, Soon‐Il An
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Customized Itinerant Frequency Combs by Cascaded Nonlinear Effects. [PDF]
Adv Sci (Weinh)A cascaded third‐order nonlinear system generates an itinerant frequency comb with the comb center frequency decoupled from the cavity resonance. This enables arbitrary spectral scaling, flexible spacing adjustments, and real‐time central‐frequency engineering, allowing comb splicing and subdivision. The resulting versatility and reconfigurability open
Wang Y +8 more
europepmc +2 more sources