CALCULATION OF TRACTION AND ENERGY CHARACTERISTICS OF METRO WITH DIFFERENT ELECTRIC TRACTION SYSTEMS BY PROGRAM «MATHCAD»

The growth of semiconductors, superconductors, metals, and other insulators has been investigated using alumina substrates in a variety of orientations. The surface state of the alumina (for example surface reconstruction and step nature) can be expected to affect the growth nature and quality of the epilayers. As such, the surface nature has been studied using a number of techniques including low energy electron diffraction (LEED), reflection electron microscopy (REM), transmission electron microscopy (TEM), molecular dynamics computer simulations, and also by theoretical surface energy calculations. In the (0001) orientation, the bulk alumina lattice can be thought of as a layered structure with A1-A1-O stacking. This gives three possible terminations of the bulk alumina lattice, with theoretical surface energy calculations suggesting that termination should occur between the Al layers. Thus, the lattice often has been described as being made up of layers of (Al-O-Al) unit stacking sequences. There is a 180° rotation in the surface symmetry of successive layers and a total of six layers are required to form the alumina unit cell.

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Electric Traction on Tramway and by Accumulators

Scientific American ◽

10.1038/scientificamerican04131889-11072supp ◽

1889 ◽

Vol 27 (693supp) ◽

pp. 11072-11073

Keyword(s):

Electric Traction

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High-Speed, Long-Distance Electric Traction

Scientific American ◽

10.1038/scientificamerican06171905-24627supp ◽

1905 ◽

Vol 59 (1537supp) ◽

pp. 24627-24628

Author(s):

Charles A. Mudge

Keyword(s):

High Speed ◽

Long Distance ◽

Electric Traction

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Electric Traction by Monophase Current

Scientific American ◽

10.1038/scientificamerican12261903-23401supp ◽

1903 ◽

Vol 56 (1460supp) ◽

pp. 23401-23402

Author(s):

Emile Guabini

Keyword(s):

Electric Traction

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CO2 and CO monolayers on MgO(100) : LEED experiments and potential energy calculations

Journal de Physique I ◽

10.1051/jp1:1994235 ◽

1994 ◽

Vol 4 (6) ◽

pp. 905-920 ◽

Cited By ~ 32

Author(s):

V. Panella ◽

J. Suzanne ◽

P. N. M. Hoang ◽

C. Girardet

Keyword(s):

Potential Energy ◽

Energy Calculations ◽

Potential Energy Calculations

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POTENTIAL ENERGY CALCULATIONS ON POLYACETYLENE

Le Journal de Physique Colloques ◽

10.1051/jphyscol:1983388 ◽

1983 ◽

Vol 44 (C3) ◽

pp. C3-447-C3-450

Author(s):

E. Cernia ◽

L. D'Ilario ◽

G. Nencini

Keyword(s):

Potential Energy ◽

Energy Calculations ◽

Potential Energy Calculations

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Helicopter main reduction planetary gear fault diagnosis method based on SVDD

International Journal of Applied Electromagnetics and Mechanics ◽

10.3233/jae-209316 ◽

2020 ◽

Vol 64 (1-4) ◽

pp. 137-145

Author(s):

Yubin Xia ◽

Dakai Liang ◽

Guo Zheng ◽

Jingling Wang ◽

Jie Zeng

Keyword(s):

Fault Diagnosis ◽

Planetary Gear ◽

Gaussian Kernel ◽

Support Vector ◽

Support Vector Data Description ◽

Vector Data ◽

Energy Characteristics ◽

Gear Fault ◽

Channel Information ◽

Diagnosis Method

Aiming at the irregularity of the fault characteristics of the helicopter main reducer planetary gear, a fault diagnosis method based on support vector data description (SVDD) is proposed. The working condition of the helicopter is complex and changeable, and the fault characteristics of the planetary gear also show irregularity with the change of working conditions. It is impossible to diagnose the fault by the regularity of a single fault feature; so a method of SVDD based on Gaussian kernel function is used. By connecting the energy characteristics and fault characteristics of the helicopter main reducer running state signal and performing vector quantization, the planetary gear of the helicopter main reducer is characterized, and simultaneously couple the multi-channel information, which can accurately characterize the operational state of the planetary gear’s state.

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