Results 21 to 30 of about 24,852 (245)

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

Double Sliding-Surface Multiloop Control Reducing Semiconductor Voltage Stress on the Boost Inverter

open access: yesApplied Sciences, 2020
Sliding-mode control (SMC) has been successfully applied to boost inverters, which solves the tracking problem of imposing sinusoidal behavior to the output voltage despite the coupled or decoupled operation of both boost cells in the converter.
Oswaldo López-Santos, Germain García
doaj   +1 more source

Analytical technique for solving the quadratic nonlinear oscillator

open access: yesResults in Physics, 2020
Recently, an approximate solution of the quadratic nonlinear oscillator has been presented based on the harmonic balance method. According to this method a set of nonlinear algebraic equations appear among the unknown coefficients of the several harmonic
Ismot Ara Yeasmin   +3 more
doaj   +1 more source

Analytical Periodic Solutions for Non-Homogenous Integrable Dispersionless Equations Using a Modified Harmonic Balance Method

open access: yesMathematics
In this study, we outline a modified harmonic balance method for solving non-homogenous integrable dispersionless equations and obtaining the corresponding periodic solutions, a research field which shows limited investigation. This study is the first to
Muhammad Irfan Khan   +2 more
doaj   +1 more source

Modified harmonic balance method for the solution of nonlinear jerk equations

open access: yesResults in Physics, 2018
In this paper, a second approximate solution of nonlinear jerk equations (third order differential equation) can be obtained by using modified harmonic balance method.
M. Saifur Rahman, A.S.M.Z. Hasan
doaj   +1 more source

Free vibration analysis of nonlinear axially loaded beams using a modified harmonic balance method

open access: yesPartial Differential Equations in Applied Mathematics, 2022
The conventional harmonic balance method utilizes a numerical approach for solving a set of nonlinear algebraic equations to identify the unknown coefficients.
M. Wali Ullah   +2 more
doaj   +1 more source

A Quasi-Linear Harmonic Balance Model for Studying the Performance of Sideband-Separating SIS Receivers

open access: yesIEEE Access
We present a novel modeling technique to accurately simulate the gain, single-sideband noise temperature, and image rejection of a sideband-separating superconductor-insulator-superconductor (SIS) heterodyne receiver.
David Monasterio   +7 more
doaj   +1 more source

Flutter Analysis of the ECL5 Open Fan Testcase Using Harmonic Balance

open access: yesInternational Journal of Turbomachinery, Propulsion and Power
This paper presents a flutter analysis of the UHBR Open Fan Testcase ECL5 for an off-design point at part speed and focuses on the second eigenmode, which has a strong torsional character near the blade tip.
Christian Frey   +3 more
doaj   +1 more source

Frequency-Domain Nonlinear Modeling Approaches for Power Systems Components—A Comparison

open access: yesEnergies, 2020
Harmonic simulations play a key role in studying and predicting the impact of nonlinear devices on the power quality level of distribution grids. A frequency-domain approach allows higher computational efficiency, which has key importance as long as ...
Marco Faifer   +4 more
doaj   +1 more source

Non-linear modeling, analysis, design and simulation of a solid state power amplifier based on GaN technology for Ku band microwave application [PDF]

open access: yesAUT Journal of Modeling and Simulation, 2018
In this paper, a non-linear approach for design and analysis of solid-state power amplifiers is presented and used for AlGaN-GaN high electron-mobility transistor (HEMTs) on SiC substrate for Ku band(12.4 - 13.6 GHz) applications.
V. Ezzati, A. Abdipour
doaj   +1 more source

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