scholarly journals Dc-link voltage drift compensation in a four level Double- Star Converter using redundant states via phase-shifted PWM strategy

2018 ◽  
Vol 3 (4) ◽  
pp. 53-58
Author(s):  
Carlos A. Reusser
Keyword(s):  
Double Star ◽  
Voltage Drift ◽  
Drift Compensation ◽  
Redundant States

A Speed-Sensorless Start-Up Method for an Induction Motor Driven by a Modular Multilevel Cascade Inverter Based on Double-Star Chopper Cells (MMCI-DSCC)

2013 ◽  
Vol 133 (12) ◽  
pp. 1157-1164 ◽  
Author(s):  
Yuhei Okazaki ◽  
Makoto Hagiwara ◽  
Hirofumi Akagi
Keyword(s):  
Induction Motor ◽  
Double Star ◽  
Speed Sensorless ◽  
Start Up ◽  
Cascade Inverter

Real-Time Low-Cost Drift Compensation for Chemical Sensors Using a Deep Neural Network with Hadamard Transform and Additive Layers

2021 ◽  
pp. 1-1
Author(s):  
Diaa Badawi ◽  
Agamyrat Agambayev ◽  
Sule Ozev ◽  
A. Enis Cetin
Keyword(s):  
Neural Network ◽  
Real Time ◽  
Chemical Sensors ◽  
Deep Neural Network ◽  
Low Cost ◽  
Hadamard Transform ◽  
Drift Compensation

scholarly journals Drift Compensation on Massive Online Electronic-Nose Responses

Chemosensors ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 78
Author(s):  
Jianhua Cao ◽  
Tao Liu ◽  
Jianjun Chen ◽  
Tao Yang ◽  
Xiuxiu Zhu ◽  
...  
Keyword(s):  
Active Learning ◽  
Gas Sensor ◽  
Electronic Nose ◽  
Effective Means ◽  
Learning Paradigm ◽  
Class Label ◽  
Learning Framework ◽  
Sensor Drift ◽  
Drift Compensation ◽  
Noisy Labels

Gas sensor drift is an important issue of electronic nose (E-nose) systems. This study follows this concern under the condition that requires an instant drift compensation with massive online E-nose responses. Recently, an active learning paradigm has been introduced to such condition. However, it does not consider the “noisy label” problem caused by the unreliability of its labeling process in real applications. Thus, we have proposed a class-label appraisal methodology and associated active learning framework to assess and correct the noisy labels. To evaluate the performance of the proposed methodologies, we used the datasets from two E-nose systems. The experimental results show that the proposed methodology helps the E-noses achieve higher accuracy with lower computation than the reference methods do. Finally, we can conclude that the proposed class-label appraisal mechanism is an effective means of enhancing the robustness of active learning-based E-nose drift compensation.

Modeling of Work Modes of Double Star Ship's Synchronous Propulsion Drive

2020 ◽  
Author(s):  
Nikolay Djagarov ◽  
Zhivko Grozdev ◽  
Konstantin Gabriel Predoi ◽  
Julia Djagarova
Keyword(s):  
Double Star

scholarly journals Photonic Reservoir Computer with Output Expansion for Unsupervized Parameter Drift Compensation

Entropy ◽  
2021 ◽  
Vol 23 (8) ◽  
pp. 955
Author(s):  
Jaël Pauwels ◽  
Guy Van der Sande ◽  
Guy Verschaffelt ◽  
Serge Massar
Keyword(s):  
Electronic System ◽  
Nonlinear Functions ◽  
System Complexity ◽  
Trade Off ◽  
Parameter Drift ◽  
Output Layer ◽  
Drift Compensation ◽  
Output Neurons ◽  
Performance Gains

We present a method to improve the performance of a reservoir computer by keeping the reservoir fixed and increasing the number of output neurons. The additional neurons are nonlinear functions, typically chosen randomly, of the reservoir neurons. We demonstrate the interest of this expanded output layer on an experimental opto-electronic system subject to slow parameter drift which results in loss of performance. We can partially recover the lost performance by using the output layer expansion. The proposed scheme allows for a trade-off between performance gains and system complexity.

scholarly journals A Plan for a New Generation 2 m-Class Telescope in Indonesia

1984 ◽  
Vol 80 ◽  
pp. 409-410
Author(s):  
Karel A. Van Der Hucht
Keyword(s):  
Double Star ◽  
Radial Velocities ◽  
Spectroscopic Binaries ◽  
Theoretical Research ◽  
60Th Anniversary ◽  
Additional Tool ◽  
New Generation

AbstractOne of the prime astrophysical interests of the Observatorium Bosscha is, and has always been, double star research: visual double star research with the double-60 cm Zeiss telescope (dedicated in 1928), and theoretical research of evolved massive spectroscopic binaries (since 1972). For one thing, this is the very reason that this IAU Colloquium No. 80, celebrating the 60th anniversary of the Observatorium Bosscha in Lembang, is devoted to binary astrophysics.Up to now, visual, photographic, and photometric tools have been used for binary research at the Observatorium Bosscha. An important, essential additional tool for binary research is spectrographic equipment, in order to measure radial velocities of binary components.

scholarly journals SUSI’s Potential for Double Star Research

1992 ◽  
Vol 135 ◽  
pp. 521-526
Author(s):  
John Davis
Keyword(s):  
Angular Resolution ◽  
Double Star ◽  
Double Stars ◽  
Stellar Interferometer ◽  
New Instrument

AbstractThe Sydney University Stellar Interferometer (SUSI) is currently undergoing commissioning and will soon commence its astronomical program in which observations of double stars will form a major component. With its 640-m long North–South array of input siderostats, the new instrument will have unprecedented angular resolution.

scholarly journals Radial variation of whistler-mode chorus: first results from the STAFF/DWP instrument on board the Double Star TC-1 spacecraft

2005 ◽  
Vol 23 (8) ◽  
pp. 2937-2942 ◽  
Author(s):  
O. Santolík ◽  
E. Macúšová ◽  
K. H. Yearby ◽  
N. Cornilleau-Wehrlin ◽  
H. StC. K. Alleyne
Keyword(s):  
Cyclotron Frequency ◽  
Power Spectra ◽  
Double Star ◽  
Electron Cyclotron ◽  
Radial Variation ◽  
Whistler Mode ◽  
Electron Cyclotron Frequency ◽  
The Earth ◽  
First Results ◽  
Initial Results

Abstract. We use the first measurements of the STAFF/DWP instrument on the Double Star TC-1 spacecraft to investigate whistler-mode chorus. We present initial results of a systematic study on radial variation of dawn chorus. The chorus events show an increased intensity at L parameter above 6. This is important for the possible explanation of intensifications of chorus, which were previously observed closer to the Earth at higher latitudes. Our results also indicate that the upper band of chorus at frequencies above one-half of the electron cyclotron frequency disappears for L above 8. The lower band of chorus is observed at frequencies below 0.4 of the electron cyclotron frequency up to L of 11-12. The maxima of the chorus power spectra are found at slightly lower frequencies compared to previous studies. We do not observe any distinct evolution of the position of the chorus frequency band as a function of L. More data of the TC-1 spacecraft are needed to verify these initial results and to increase the MLT coverage.

Long-term wavelength drift compensation of tunable pulsed dye laser for sodium detection lidar

2015 ◽  
Vol 354 ◽  
pp. 52-58 ◽  
Author(s):  
Yuan Xia ◽  
Xuewu Cheng ◽  
Faquan Li ◽  
Jihong Wang ◽  
Yong Yang ◽  
...  
Keyword(s):  
Dye Laser ◽  
Pulsed Dye Laser ◽  
Drift Compensation
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