Results 31 to 40 of about 13,410 (248)

A convergence ball for multistep simplified newton-like methods [PDF]

open access: yesNumerical Functional Analysis and Optimization, 1993
We first give a local convergence ball for multistep simplified Newton-like methods for solving nonlinear equations with nondifferentiable operators. Next we apply the results to some iterative methods and derive Rheinboldt's ball for Newton's method.
Xiaojun Chen, Tetsuro Yamamoto
openaire   +1 more source

A multiphase flow study for lubrication characteristics on the internal flow pattern of ball bearing

open access: yesResults in Engineering, 2023
This work proposes a general method for establishing the lubrication analysis model of ball bearing and the oil-air multiphase flow characteristics inside ball bearing is revealed by CFD. Based on the geometric feature, the micro-clearance in the chamber
Wentao Shan   +5 more
doaj   +1 more source

Convergence Behavior for Newton-Steffensen’s Method under -Condition of Second Derivative

open access: yesAbstract and Applied Analysis, 2013
The present paper is concerned with the semilocal as well as the local convergence problems of Newton-Steffensen’s method to solve nonlinear operator equations in Banach spaces.
Yonghui Ling, Xiubin Xu, Shaohua Yu
doaj   +1 more source

Design and application of models reference adaptive control (MRAC) on ball and beam

open access: yesJournal of Mechatronics, Electrical Power, and Vehicular Technology, 2022
This paper presents the implementation of an adaptive control approach to the ball and beam system (BBS). The dynamics of a BBS are non-linear, and in the implementation, the uncertainty of the system's parameters may occur.
Muhammad Zakiyullah Romdlony   +4 more
doaj   +1 more source

Ball convergence theorem for inexact Newton methods in Banach space [PDF]

open access: yesCreative Mathematics and Informatics, 2020
We present a local convergence analysis for inexact Newton methods in order to approximate a solution of a nonlinear equation in a Banach space. Our sufficient convergence conditions involve only hypotheses on the first Frèchet-derivative of the operator involved. Numerical examples are also provided in this study.
IOANNIS K. ARGYROS, GEORGE SANTHOSH
openaire   +1 more source

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar   +6 more
wiley   +1 more source

Is Young's Modulus a Critical Coating Property Determining Fouling‐Release Performance of Marine Coatings?

open access: yesAdvanced Engineering Materials, EarlyView.
The release of foulers from protective marine coatings is determined by several interrelated material properties, including the strength of Young's modulus, the flexibility of chain segments, the surface free energy, and the magnitude of hydrodynamic stress.
Johann C. Schaal   +2 more
wiley   +1 more source

A Novel Fault Diagnosis Method Based on the KELM Optimized by Whale Optimization Algorithm

open access: yesMachines, 2022
To solve the problem that fault features are difficult to extract and the time-frequency features cannot fully represent the state information, a novel method is proposed in this paper based on the whale optimization algorithm (WOA) and the kernel ...
Ruijun Liang, Yao Chen, Rupeng Zhu
doaj   +1 more source

Speeding up the convergence of the Polyak’s Heavy Ball algorithm

open access: yesTransactions of A. Razmadze Mathematical Institute, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gelashvili, Koba   +3 more
openaire   +1 more source

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