Results 91 to 100 of about 20,081 (298)

Structured singular value with repeated scalar blocks [PDF]

, 1988
The structured singular value, μ, is an important linear algebra tool to study a class of matrix perturbation problems, [Doy]. It is useful for analyzing the robustness of stability and performance of dynamical systems [DoyWS].
Doyle, John, Packard, Andy
core  

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

Advanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat, Guido Barale, John Stavridis, Ehsan Norouzi, Jin‐Yoo Suh, Dong‐Ik Kim, Luca Iuliano, Abdollah Saboori   +7 more
wiley   +1 more source

A Robust Asymptotic Tracking Controller for an Uncertain 2DOF Underactuated Mechanical System Motivated by a Satellite Attitude Control Problem

International Journal of Applied Mathematics and Computer Science
The paper is devoted to the theoretical problem of designing a robust asymptotic tracking control system for a rotational motion of a 2DOF underactuated linear mechanical system with parametric uncertainties.
Emirsajłow Zbigniew, Barciński Tomasz
doaj   +1 more source

Variance exchange process: overcoming the problem of singular information matrices in quadratic three−variable response designs

Journal of Innovative Applied Mathematics and Computational Sciences
Many a time, in a variance exchange process looking for D-optimal designs, the initial designs of all quadratic components of three-variable response polynomials produce non-invertible information matrices.
Okim Ikpan, Felix Nwobi
doaj   +1 more source

Pyramidal Structures on Yttria‐Stabilized Zirconia after High Temperature Exposure at 1500°C: New Features on an Old Material

Advanced Engineering Materials, EarlyView.
New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold, Dylan Jennings, Robert Vaßen   +2 more
wiley   +1 more source

A NEW SOURCE OF STRUCTURED SINGULAR VALUE DECOMPOSITION PROBLEMS

, 2008
. The computation of the Singular Value Decomposition (SVD) of structured matrices has become an important line of research in numerical linear algebra.
Ana Marco
core  

Application of the discrete-time structured singular value for DC-DC converters

, 2008
This paper considers the application of the discrete-time structured singular value to assess the robustness of systems subject to real parametric uncertainties.
TONY SCANLAN (12352813), Scharrer, Martin Josef, Scanlan, Tony, M. Halton, Halton, Mark, Martin Josef Scharrer (12582514), T. Scanlan, M. Scharrer, MARK HALTON (12350410)   +8 more
core   +1 more source

Robust Fractional-Order PI/PD Controllers for a Cascade Control Structure of Servo Systems

Fractal and Fractional
In this paper, a cascade control structure is suggested to control servo systems that normally include a servo motor in coupling with two kinds of mechanism elements, a translational or rotational movement.
Vo Lam Chuong, Ngo Hong Nam, Le Hieu Giang, Truong Nguyen Luan Vu   +3 more
doaj   +1 more source

Using a High-Dimensional Graph of Semantic Space to Model Relationships among Words

Frontiers in Psychology, 2014
The GOLD model (Graph Of Language Distribution) is a network model constructed based on co-occurrence in a large corpus of natural language that may be used to explore what information may be present in a graph-structured model of language, and what ...
Alice F Jackson, Donald J Bolger
doaj   +1 more source