Results 61 to 70 of about 11,091,462 (126)

Robotic Needle Steering for Percutaneous Interventions: Sensing, Modeling, and Control

open access: yesAdvanced Intelligent Systems, Volume 8, Issue 1, January 2026.
This review examines recent advances in robotic needle steering for percutaneous interventions, highlighting closed‐loop sensing, physics‐informed tissue‐needle interaction modeling, and real‐time trajectory planning and control. It synthesizes innovations in deep learning, fiber‐optic feedback, and adaptive control strategies, and outlines emerging ...
Fangjiao Zhao   +5 more
wiley   +1 more source

Comments on the historical bases of the Rayleigh and Ritz methods

open access: yes, 2009
In a recent article entitled “The historical bases of the Rayleigh and Ritz methods”, Professor Leissa raised the issue of using two different names, “The Rayleigh-Ritz Method” and “The Ritz Method” for the same procedure.
Ilanko, Sinniah
core   +1 more source

Fault‐Tolerant Temperature Control of HRSG Superheaters: Stability Analysis Under Valve Leakage Using Physics‐Informed Neural Networks

open access: yesIET Control Theory &Applications, Volume 20, Issue 1, January/December 2026.
This paper proposes a fault‐tolerant steam temperature control framework for heat recovery steam generator (HRSG) superheaters that combines a PI plus feedforward controller with physics‐informed neural networks to adapt control gains under valve leakage faults.
Mojtaba Fanoodi   +3 more
wiley   +1 more source

An Analytical Approach for Fast Prediction of Stator Natural Frequencies in a Conical Permanent Magnet Synchronous Motor

open access: yesThe Journal of Engineering, Volume 2026, Issue 1, January/December 2026.
This study proposes an analytical method to predict stator core vibrations. This analytical framework provides an efficient theoretical tool for rapid vibration assessment and design optimisation of conical motor stators. ABSTRACT Conical permanent magnet synchronous motor (CPMSM) is widely used in turbine power generation, electric vehicle propulsion ...
Zhong Huang, Hao Zhang, Peng Zhang
wiley   +1 more source

Analytical method comparison on critical force of the stepped column model of telescopic crane

open access: yesAdvances in Mechanical Engineering, 2018
The calculation of the critical force of the stepped column model of telescopic boom crane is the key to stability calculation of all-terrain crane. In slightly bending theory, differential equation can be built up, and then the deflection curve of ideal
Fenglin Yao   +4 more
doaj   +1 more source

Optimal a priori error bounds for the Rayleigh-Ritz method [PDF]

open access: yes, 2000
We derive error bounds for the Rayleigh-Ritz method for the approximation to extremal eigenpairs of a symmetric matrix. The bounds are expressed in terms of the eigenvalues of the matrix and the angle between the subspace and the eigenvector.
Sleijpen, G.L.G.   +2 more
core   +1 more source

Elliptic spline functions and the Rayleigh-Ritz-Galerkin method

open access: yes, 1970
Error estimates for the Rayleigh-Ritz-Galerkin method, using finite-dimensional spline type spaces, for a class of nonlinear two-point boundary value problems are discussed.
Martin H. Schultz
core   +1 more source

Nonlinear Vibrations and Control of Wind Towers With Variable Cross Section and Elastic Foundation

open access: yesStructural Control and Health Monitoring, Volume 2026, Issue 1, 2026.
This study proposes a comprehensive nonlinear modeling and vibration control framework for wind towers subjected to the simultaneous and often conflicting demands of aerodynamic and seismic excitations. The primary contribution of this work involves the development of a fully geometrically nonlinear, high‐fidelity coupled tower–nacelle–blade model that
Manus Saintilma   +3 more
wiley   +1 more source

Analysis of a circular arch by the Rayleigh-Ritz method

open access: yes, 1966
The Rayleigh-Ritz method is a convenient tool for the analysis of deflections in structures subjected to external forces. Bending moment relations can be developed and reliable values obtained for bending moments. In this thesis the Rayleigh-Ritz method
Chang, Ming-ke
core  

On the bipenalty method: why is it advantageous to add stiffness and mass [PDF]

open access: yes, 2011
In a recent paper, Askes et al [1] proposed the simultaneous use of stiffness and inertia of large magnitude to model constraints in time domain analysis.
Ilanko, Sinniah   +1 more
core  

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