Results 21 to 30 of about 1,574 (222)

Pseudospectral optimal train control

open access: yes, 2021
In the last decade, pseudospectral methods have become popular for solving optimal control problems. Pseudospectral methods do not need prior knowledge about the optimal control structure and are thus very flexible for problems with complex path ...
Wang, P.   +5 more
core   +1 more source

MIXED PSEUDOSPECTRAL METHOD FOR HEAT TRANSFER

open access: yesMathematical Modelling and Analysis, 2016
In this paper, we propose a mixed generalized Laguerre-Legendre pseudospectral method for non-isotropic heat transfer with inhomogeneous boundary conditions on an infinite strip. Some properties about the mixed generalized LaguerreLegendre approximation are established.
Wang, Tian-Jun, Sun, Tao
openaire   +3 more sources

Numerical Solution of Mass Transfer Process during Drying of Apple Slices Using Pseudospectral Method [PDF]

open access: yesJournal of Agricultural Machinery, 2019
Introduction Convective air drying is one of the oldest and most popular drying methods. Designing and controlling the convective air drying needs the mathematical description of the moisture transfer during the drying process, known as drying kinetics ...
A Pasban   +3 more
doaj   +1 more source

Direct trajectory optimization by a Chebyshev pseudospectral method [PDF]

open access: yesProceedings of the 2000 American Control Conference. ACC (IEEE Cat. No.00CH36334), 2000
We present a Chebyshev pseudospectral method for directly solving a generic Bolza optimal control problem with state and control constraints. This method employs Nth-degree Lagrange polynomial approximations for the stateand control variables with the values of these variables at the Chebyshev-Gauss-Lobatto (CGL) points as the expansion coefficients ...
Ross, I. Michael, Fahroo, Fahroo
openaire   +3 more sources

Super-Exponential Approximation of the Riemann–Liouville Fractional Integral via Gegenbauer-Based Fractional Approximation Methods

open access: yesAlgorithms
This paper introduces a Gegenbauer-based fractional approximation (GBFA) method for high-precision approximation of the left Riemann–Liouville fractional integral (RLFI).
Kareem T. Elgindy
doaj   +1 more source

Complexity in engineering and natural sciences; pp. 249–255 [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2015
An overview is presented on interdisciplinary studies into complexity of wave processes with the main attention to wave–wave, field–field, wave–internal structure a.o. interactions.
Jüri Engelbrecht
doaj   +1 more source

Multistage Spectral Relaxation Method for Solving the Hyperchaotic Complex Systems

open access: yesThe Scientific World Journal, 2014
We present a pseudospectral method application for solving the hyperchaotic complex systems. The proposed method, called the multistage spectral relaxation method (MSRM) is based on a technique of extending Gauss-Seidel type relaxation ideas to systems ...
Hassan Saberi Nik, Paulo Rebelo
doaj   +1 more source

The Tiger Optimization Software - A Pseudospectral Optimal Control Package [PDF]

open access: yes, 2022
The fields of trajectory optimization and optimal control are closely connected. Practical trajectory optimization techniques are built on the indirect and direct methods for solving optimal control problems.
Sowell, Samuel
core  

GPU-Accelerated Pseudospectral Methods for Optimal Control Problems

open access: yesMathematics
Pseudospectral methods are effective tools for solving optimal control problems, but they result in large-scale nonlinear programming (NLP) problems that are computationally demanding.
Yilin Zou, Fanghua Jiang
doaj   +1 more source

PAMELA: An open-source software package for calculating nonlocal exact exchange effects on electron gases in core-shell nanowires

open access: yesAIP Advances, 2012
We present a new pseudospectral approach for incorporating many-body, nonlocal exact exchange interactions to understand the formation of electron gases in core-shell nanowires.
Andrew W. Long, Bryan M. Wong
doaj   +1 more source

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