scholarly journals New Development Design of Low Current Measurement with Noise Reduction for High-Resolution System

2018 ◽  
Vol 11 (2) ◽  
pp. 756-765
Author(s):  
Ndalla Essengue Gloire ◽  
Wembe Tafo Evariste ◽  
Djamet Yimga Arnaud ◽  
Folla Kamdem Jérôme ◽  
Essimbi Zobo Bernard
Keyword(s):  
High Resolution ◽  
Noise Reduction ◽  
Current Measurement ◽  
Resolution System ◽  
New Development

scholarly journals Measuring Current in a Power Converter Using Fuzzy Automatic Gain Control

2021 ◽  
Vol 11 (13) ◽  
pp. 5793
Author(s):  
Bartosz Dominikowski
Keyword(s):  
High Resolution ◽  
Fuzzy Controller ◽  
Automatic Gain Control ◽  
Gain Control ◽  
Measurement Range ◽  
Power Converter ◽  
Current Measurement ◽  
Dc Power ◽  
Programmable Gain ◽  
Electric Loads

The accuracy of current measurements can be increased by appropriate amplification of the signal to within the measurement range. Accurate current measurement is important for energy monitoring and in power converter control systems. Resistance and inductive current transducers are used to measure the major current in AC/DC power converters. The output value of the current transducer depends on the load motor, and changes across the whole measurement range. Modern current measurement circuits are equipped with operational amplifiers with constant or programmable gain. These circuits are not able to measure small input currents with high resolution. This article proposes a precise loop gain system that can be implemented with various algorithms. Computer analysis of various automatic gain control (AGC) systems proved the effectiveness of the Mamdani controller, which was implemented in an MCU (microprocessor). The proposed fuzzy controller continuously determines the value of the conversion factor. The system also enables high resolution measurements of the current emitted from small electric loads (≥1 A) when the electric motor is stationary.

scholarly journals The Clawpack 5.x software

2016 ◽  
Author(s):  
Kyle T Mandli ◽  
Aaron J Ahmadia ◽  
Marsha Berger ◽  
Donna Calhoun ◽  
David L George ◽  
...  
Keyword(s):  
High Resolution ◽  
Software Package ◽  
Finite Volume Methods ◽  
Development Model ◽  
Hyperbolic Partial Differential Equations ◽  
Current Development ◽  
Riemann Solvers ◽  
User Communities ◽  
Code Base ◽  
New Development

Clawpack is a software package designed to solve nonlinear hyperbolic partial differential equations using high-resolution finite volume methods based on Riemann solvers and limiters. The package includes a number of variants aimed at different applications and user communities. Clawpack has been actively developed as an open source project for over 20 years. The latest major release, Clawpack 5, introduces a number of new features and changes to the code base and a new development model based on GitHub and Git submodules. This article provides a summary of the most significant changes, the rationale behind some of these changes, and a description of our current development model.

SU-E-I-48: Noise Reduction with Over-Sampling for High Resolution Detectors Using a Spread Function Convolution Method

2015 ◽  
Vol 42 (6Part6) ◽  
pp. 3252-3252 ◽  
Author(s):  
A Shankar ◽  
R Rana ◽  
S Vijayan ◽  
S V Setlur Nagesh ◽  
C Ionita ◽  
...  
Keyword(s):  
High Resolution ◽  
Noise Reduction ◽  
Spread Function ◽  
Convolution Method

scholarly journals Can Dew Help us to Image Insulating Material?

1995 ◽  
Vol 3 (1) ◽  
pp. 18-21
Author(s):  
Stephen W. Carmichael
Keyword(s):  
High Resolution ◽  
Scanning Tunneling Microscopy ◽  
Electron Flow ◽  
Scanning Tunneling ◽  
High Resolution Imaging ◽  
Tunneling Microscopy ◽  
Insulating Material ◽  
Metal Atoms ◽  
New Development ◽  
Resolution Imaging

In high resolution imaging of biologic structure, atomic lorce microscopy (AFM) has been prevailing over scanning tunneling microscopy (STM). This is primarily because biologic materials do not conduct electricity, and STM requires that electrons flow to or from the surface of the specimen, whereas electron flow is not required for AFM. Microscopists intent on using STM have compensated by coating specimens with a thin coat of metal. However, the presence of metal atoms on the surface degrades the resolution. A new development may make STM more useful to biologists than ever before.

scholarly journals High Resolution System for Nanoparticles Hyperthermia Efficiency Evaluation

2011 ◽  
Vol 47 (10) ◽  
pp. 2360-2363 ◽  
Author(s):  
P. Cobos ◽  
M. Maicas ◽  
M. Sanz ◽  
C. Aroca
Keyword(s):  
High Resolution ◽  
Efficiency Evaluation ◽  
Resolution System

A high-resolution system for particle-gamma coincidence measurements

1970 ◽  
Vol 146 (1) ◽  
pp. 26-32 ◽  
Author(s):  
J. Amezquita ◽  
C.P. Moore ◽  
K.P. Lieb ◽  
J.G. Kulleck ◽  
M. Koike ◽  
...  
Keyword(s):  
High Resolution ◽  
Resolution System ◽  
Gamma Coincidence ◽  
Coincidence Measurements
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