Results 31 to 40 of about 63,876 (277)

Learning feedforward controller for a mobile robot vehicle [PDF]

open access: yes, 1996
This paper describes the design and realisation of an on-line learning posetracking controller for a three-wheeled mobile robot vehicle. The controller consists of two components.
Amerongen, J. van   +3 more
core   +3 more sources

Contact mechanics of fractal surfaces by spline assisted discretisation

open access: yesInternational Journal of Solids and Structures, 2015
We present a newly developed approach for the calculation of interfacial stiffness and contact area evolution between two rough bodies exhibiting self affine surface structures. Using spline assisted discretization to define localised contact normals and surface curvatures we interpret the mechanics of simulated non-adhesive elastic surface-profiles ...
Hanaor, Dorian   +2 more
openaire   +2 more sources

Analysis of the approaches used for calculating involute splined couplings and the methods of considering their influence on the dynamic behavior of systems

open access: yesНаучный вестник МГТУ ГА, 2023
Spline couplings, due to their high reliability and strength parameters, are widespread not only in mechanical engineering. The ability to transmit high torque with a sufficiently long service life has led to the extensive use of these couplings in the ...
I. V. Nikolaev   +2 more
doaj   +1 more source

The Rational Spline Interpolation Based-LOD Method and Its Application to Rotating Machinery Fault Diagnosis

open access: yesApplied Sciences, 2020
Local oscillatory-characteristic decomposition (LOD) is a relatively new self-adaptive time-frequency analysis methodology. The method, based on local oscillatory characteristics of the signal itself uses three mathematical operations such as ...
Xiaorui Niu   +5 more
doaj   +1 more source

3D Reality-Based Survey and Retopology for Structural Analysis of Cultural Heritage

open access: yesSensors, 2022
Cultural heritage’s structural changes and damages can influence the mechanical behaviour of artefacts and buildings. The use of finite element methods (FEM) for mechanical analysis is largely used in modelling stress behaviour. The workflow involves the
Sara Gonizzi Barsanti   +2 more
doaj   +1 more source

Mechanical sequencer [PDF]

open access: yes, 1977
A mechanical sequencer having a rotatable drive shaft is described. The drive shaft has a spline formed thereon. A freely rotatable shaft contains a plurality of rollers positioned thereon, the axis of the freely rotatable shaft having an axis parallel ...
Appleberry, W. T.
core   +1 more source

Changes in Immune‐Inflammation Status and Acute Ischemic Stroke Prognosis in Prospective Cohort

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Inflammation is a critical risk factor for poor outcomes in cerebral infarction. Prior studies focused primarily on baseline inflammation status, neglecting dynamic longitudinal changes. We try to investigate the association between immune‐inflammation status alterations and stroke prognosis, and evaluated three systemic biomarkers'
Songfang Chen   +11 more
wiley   +1 more source

Analysis of stress-strain state of the metal plate based on discrete data of displacement values

open access: yesФізика і хімія твердого тіла
An actual problem of stress-strain state (SSS) analysis of a bent metal plate under an uncertain acting load is solved.  A problem in the direct use of spatial interpolation for obtaining the surface of a metal plate, which is realized in the Surfer ...
E.Y. Ripetskyi   +2 more
doaj   +1 more source

Focal plane transport assembly for the HEAO-B X-ray telescope [PDF]

open access: yes, 1979
The High Energy Astronomy Observatory - Mission B (HEAO-B), an earth orbiting X-ray telescope facility capable of locating and imaging celestial X-ray sources within one second of arc in the celestial sphere, is considered.
Allard, P. D.   +4 more
core   +1 more source

Whole‐Body Pattern of Muscle Degeneration and Progression in Sarcoglycanopathies

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To characterize whole‐body intramuscular fat distribution pattern in patients with sarcoglycanopathies and explore correlations with disease severity, duration and age at onset. Methods Retrospective, cross‐sectional, multicentric study enrolling patients with variants in one of the four sarcoglycan genes who underwent whole‐body ...
Laura Costa‐Comellas   +39 more
wiley   +1 more source

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