Results 1 to 10 of about 25,855 (153)

Optical transfer function expansion of quadratic pupils [PDF]

open access: yesInternational Optical Design Conference 2017, 2017
Quadratic pupils representing Gaussian apodization and defocus are expanded into Zernike polynomials. Combinations of the pupil expansion coefficients are used, in turn to expand the Optical Transfer Function into a novel set of basis functions.
exaly   +5 more sources

Interactions of a Forced Vibrating Membrane with a Cylindrical Acoustic Cavity [PDF]

open access: yesSensors
Acoustic cavities play a role in many technological applications in civil, naval, and aerospace engineering. This study examines the vibroacoustic performance of a forced oscillating top membrane of a cylindrical container fully filled with a ...
Manuel Gascón-Pérez
doaj   +2 more sources

Photometry, light curve solution and period study of contact binary BX And [PDF]

open access: yesSerbian Astronomical Journal, 2021
The photometry of the binary star BX And (HIP 10027) is performed during several nights in October and November 2019, and October 2020 using B, V, and R Johnson-Cousins filters in Dr.
Partovi M., Abedi A., Roobiat K.Y.
doaj   +1 more source

Quadratic L2-gain performance linear parameter-varying realisation of parametric transfer functions and state-feedback gain scheduling control

open access: yesIET Control Theory & Applications, 2012
The study deals with the quadratic L2-gain performance linear parameter-varying realisation of parametric transfer functions and state-feedback gain scheduling control. It is shown that any parametric transfer function, which has L2-gain performance with a bound for all constant parameters values, admits a state space realisation guaranteeing quadratic
openaire   +3 more sources

An Approximation Method for Fractional-Order Models Using Quadratic Systems and Equilibrium Optimizer

open access: yesFractal and Fractional, 2023
System identification is an important methodology used in control theory and constitutes the first step of control design. It is known that many real systems can be better characterized by fractional-order models.
Ali Yüce
doaj   +1 more source

Functional Segmentation Method for the Design of Compact Adiabatic Devices

open access: yesPhotonics, 2023
In this study, a functional segmentation method for the design of adiabatic devices is presented. This method can be applied to calculate the compact adiabatic waveguide shapes for adiabatic taper waveguides and adiabatic mode converters.
Tu-Lu Liang   +7 more
doaj   +1 more source

Identifying the optimal controller strategy for DC motors [PDF]

open access: yesArchives of Electrical Engineering, 2019
The aim of this study is to design a control strategy for the angular rate (speed) of a DC motor by varying the terminal voltage. This paper describes various designs for the control of direct current (DC) motors.
M.R. Qader
doaj   +1 more source

Conditions for Existence of Second-Order and Third-Order Filters for Discrete Systems with Additive Noises

open access: yesMathematics, 2022
The problem of constructing functional optimal observers (filters) for stochastic control systems with additive noises in discrete time are studied in this work.
Mikhail Kamenshchikov
doaj   +1 more source

Analysis and research of methods of linearization of the transfer function of precision semiconductor temperature sensors

open access: yesФізика і хімія твердого тіла, 2020
The analysis of the nonlinearity of the transfer function of primary temperature transducers based on transistor structures has been performed. It’s shown that the quadratic component of the transfer function creates a significant nonlinearity error up ...
O. V. Boyko, Z. Y. Hotra
doaj   +1 more source

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