Results 1 to 10 of about 1,858 (192)

Design and Vision-Based Calibration of a Five-Axis Precision Dispensing Machine [PDF]

Micromachines
Five-axis precision dispensing machines are employed for semiconductor packaging. The dispensing accuracy is significantly affected by multiple geometric errors among the five axes.
Ruizhou Wang, Jinyu Liao, Binghao Wang, Qifeng Zhong, Yongchao Dong, Han Wang   +5 more
doaj   +2 more sources

Real-Time Multi-Sensor Joint Fault Diagnosis Method for Permanent Magnet Traction Drive Systems Based on Structural Analysis [PDF]

Sensors
Sensor faults are one of the most common faults that cause performance degradation or functional loss in permanent magnet traction drive systems (PMTDSs).
Weiwei Gan, Xueming Li, Dong Wei, Rongjun Ding, Kan Liu, Zhiwen Chen   +5 more
doaj   +2 more sources

Experimental Mueller matrix polarimetry with full Poincaré beams and a CCD camera [PDF]

EPJ Web of Conferences, 2021
Recently, the use of full Poincaré beams for extracting the Mueller matrix of a sample has been proposed. These beams present all possible polarization states across their transverse section.
Suárez-Bermejo Juan Carlos, González de Sande J. Carlos, Santarsiero Massimo, Piquero Gemma   +3 more
doaj   +1 more source

Exact Solutions to the Oberbeck–Boussinesq Equations for Shear Flows of a Viscous Binary Fluid with Allowance Made for the Soret Effect

Известия Иркутского государственного университета: Серия "Математика", 2021
The paper considers an exact solution to the equations of thermal diffusion of a viscous incompressible fluid in the Boussinesq approximation with neglect of the Dufour effect for a steady shear flow.
N.V. Burmasheva, E.Yu. Prosviryakov
doaj   +1 more source

PROLONGATIONS OF GEOMETRIC OVERDETERMINED SYSTEMS [PDF]

International Journal of Mathematics, 2006
We show that a wide class of geometrically defined overdetermined semilinear partial differential equations may be explicitly prolonged to obtain closed systems. As a consequence, in the case of linear equations we extract sharp bounds on the dimension of the solution space.
Branson, Thomas, Cap, Andreas, Eastwood, Michael, Gover, A   +3 more
openaire   +4 more sources

Exact Solutions of Navier–Stokes Equations for Quasi-Two-Dimensional Flows with Rayleigh Friction

Fluids, 2023
To solve the problems of geophysical hydrodynamics, it is necessary to integrally take into account the unevenness of the bottom and the free boundary for a large-scale flow of a viscous incompressible fluid.
Natalya Burmasheva, Sergey Ershkov, Evgeniy Prosviryakov, Dmytro Leshchenko   +3 more
doaj   +1 more source

Frequency control scheme based on the CDM-PID controller for the hybrid microgrid system with stochastic renewable generators

Automatika, 2023
In this paper, we introduce a Coefficient Diagram Method (CDM) to design a conventional PID controller. This controller is used to decrease the frequency fluctuations of a microgrid system composed of two renewable energy sources (WTG and STPG) and four ...
M’hamed Helaimi, Hossam A. Gabbar, Rachid Taleb, Mohamed Regad   +3 more
doaj   +1 more source

A Class of Exact Solutions for Two–Dimensional Equations of Geophysical Hydrodynamics with Two Coriolis Parameters

Известия Иркутского государственного университета: Серия "Математика", 2020
The article proposes a class of exact solutions of the Navier–Stokes equations for a rotating viscous incompressible fluid. This class allows us to describe steady shear inhomogeneous (i.e., depending on several coordinates of the selected Cartesian ...
N. V. Burmasheva, E. Yu. Prosviryakov
doaj   +1 more source

A Network Parameter Database False Data Injection Correction Physics-Based Model: A Machine Learning Synthetic Measurement-Based Approach

Applied Sciences, 2021
Concerning power systems, real-time monitoring of cyber–physical security, false data injection attacks on wide-area measurements are of major concern.
Tierui Zou, Nader Aljohani, Keerthiraj Nagaraj, Sheng Zou, Cody Ruben, Arturo Bretas, Alina Zare, Janise McNair   +7 more
doaj   +1 more source

Using Alternating Minimization and Convexified Carleman Weighted Objective Functional for a Time-Domain Inverse Scattering Problem

Axioms, 2023
This paper considers a 1D time-domain inverse scattering problem for the Helmholtz equation in which penetrable scatterers are to be determined from boundary measurements of the scattering data.
Nguyen Trung Thành
doaj   +1 more source