Results 21 to 30 of about 205,537 (300)

The spreading residue harmonic balance method for studying the doubly clamped beam-type N/MEMS subjected to the van der Waals attraction

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2019
Since the doubly clamped beam-type N/MEMS subjected to the van der Waals attraction is transformed into a mathematical model through Galerkin method, which is a nonlinear differential equation, the spreading residue harmonic balance method is introduced ...
YH Qian, JL Pan, Y Qiang, JS Wang
doaj   +1 more source

Simulation of Indexing and Clocking with Harmonic Balance

open access: yesInternational Journal of Turbomachinery, Propulsion and Power, 2017
The aim of this paper is to demonstrate how the harmonic balance method can be used to predict rotor–rotor and stator–stator interactions in turbomachinery. These interactions occur in the form of clocking and indexing.
Christian Frey   +4 more
doaj   +1 more source

Simulation and Automated Modeling of Microwave Circuits: State-of-the-Art and Emerging Trends

open access: yesIEEE Journal of Microwaves, 2021
Microwave modeling and simulation are essential to designing microwave circuits and systems. Although fundamental concepts and approaches for modeling and simulation are mature, the drive to higher frequencies, tighter design margins, and more ...
Qi-Jun Zhang   +4 more
doaj   +1 more source

Nonlinear input/output analysis: application to boundary layer transition [PDF]

open access: yes, 2020
We extend linear input/output (resolvent) analysis to take into account nonlinear triadic interactions by considering a finite number of harmonics in the frequency domain using the harmonic balance method.
Colonius, Tim   +2 more
core   +4 more sources

Time-domain harmonic balance method for aerodynamic and aeroelastic simulations of turbomachinery flows [PDF]

open access: yes, 2013
A time-domain Harmonic Balance method is applied to simulate the blade row interactions and vibrations of state- of-the-art industrial turbomachinery configurations. The present harmonic balance approach is a time-integration scheme that turns a periodic
Besicovitch A.S.   +5 more
core   +1 more source

Highly Accurate Analytical Approximate Solutions of the Electrostatically Actuated Parallel Plates

open access: yesIEEE Access, 2023
This paper is concerned with highly accurate analytical approximate solutions to dynamic oscillation of the parallel-plates model of an electrostatic micro-actuator.
W. J. Liu, X. Q. Zhao
doaj   +1 more source

Unrestricted Harmonic Balance

open access: yesZeitschrift für Naturforschung A, 1983
The method of Unrestricted Harmonic Balance (UHB) as exposed and applied to purely timedependent systems, stiff systems, and chemical waves in the preceding 3 papers is extended to the case of transcendental functions. So, e.g., exponential functions even in mass action kinetics systems occur, if a wider range of temperature is considered as is the ...
openaire   +2 more sources

Modeling and Harmonic Analysis of a Fractional-Order Zeta Converter

open access: yesEnergies, 2023
The Zeta converter is an essential and widely used high-order converter. The current modeling studies on Zeta converters are based on the model that devices, such as capacitors and inductors, are of integer order.
Lingling Xie, Di Wan
doaj   +1 more source

Harmonic Balance-Based Approach for Quasi-Periodic Motions and Stability Analysis [PDF]

open access: yes, 2012
Quasi-periodic motions and their stability are addressed from the point of view of different harmonic balance-based approaches. Two numerical methods are used: a generalized multidimensional version of harmonic balance and a modification of a classical ...
GUSKOV, Mikhail, THOUVEREZ, Fabrice
core   +5 more sources

Sub-Optimal Second-Order Sliding Mode Controller Parameters’ Selection for a Positioning System with a Synchronous Reluctance Motor

open access: yesEnergies, 2019
This paper discusses nonlinear controller structure design for a synchronous reluctance motor (SynRM). The SynRM is represented with a nonlinear dynamic model. All presented nonlinearities of the SynRM are respected in the controller design procedure.
Rajko Svečko   +3 more
doaj   +1 more source

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