scholarly journals Statistical diagnostics of measurements

2018 ◽  
Vol 2018 (9) ◽  
pp. 27-31
Author(s):  
А. Моисеев ◽  
A. Moiseev
Keyword(s):  
Measuring Channel ◽  
Manufacturing Equipment ◽  
Noise Interference ◽  
Diagnostic Algorithms ◽  
Sensitivity Loss ◽  
Final Adjustment ◽  
Natural Information

The algorithm of statistical diagnostics used for the detection of measurement faults critical for ACS of manufacturing equipment and power units has been considered. Noise interference and pulse jamming and also a shift, drift and sensitivity loss of a measuring channel belong to them. A preliminary synthesis of an algorithm was carried out in the structure of a self-contained complex having a simulator of measurement faults, and their final adjustment is carried out according to the results of semi-natural tests. The latter provides for the application of diagnostic algorithms to processing records of natural information.

COMPOUND FAULT DIAGNOSIS OF BEARINGS USING AN IMPROVED SPECTRAL KURTOSIS BY MAXIMUM CORRELATION KURTOSIS DECONVOLUTION (MCKD).

2020 ◽  
Vol 9 (8) ◽  
pp. 66-72
Keyword(s):  
Fault Diagnosis ◽  
Resonance Frequency ◽  
Background Noise ◽  
Maximum Correlation ◽  
Vibration Signals ◽  
Filter Length ◽  
Frequency Bands ◽  
Noise Interference ◽  
Spectral Kurtosis

This paper discusses the use of Maximum Correlation kurtosis deconvolution (MCKD) method as a pre-processor in fast spectral kurtosis (FSK) method in order to find the compound fault characteristics of the bearing, by enhancing the vibration signals. FSK only extracts the resonance bands which have maximum kurtosis value, but sometimes it might possible that faults occur in the resonance bands which has low kurtosis value, also the faulty signals missed due to noise interference. In order to overcome these limitations FSK used with MCKD, MCKD extracts various faults present in different resonance frequency bands; also detect the weak impact component, as MCKD also dealt with strong background noise. By obtaining the MCKD parameters like, filter length & deconvolution period, we can extract the compound fault feature characteristics.

MEASURE COMPLEX SUPPORTING SAFETY AND EFFECTUVE OPERATION OF MUNICIPAL BUSES UNDER WINTER CONDITIONS

2020 ◽  
Vol 2020 (10) ◽  
pp. 37-41
Author(s):  
Sergey Bulatov
Keyword(s):  
Residual Life ◽  
Technical State ◽  
Manufacturing Equipment ◽  
Winter Conditions ◽  
On Line ◽  
State Changes ◽  
The City

The effectiveness of manufacturing equipment use taking into account its productivity and reliability for faulty parts of transmission units in municipal buses is estimated. The on-line mode is the most effective method of control allowing the tracking of the processes of technical state changes in municipal buses. As a result of monitoring there were obtained selected data on PAZ-3205 municipal bus operated under winter conditions in the city of Ohrenburg. During the trip there was recorded 39.1 l/100km petrol consumption. The residual life of the PAZ-3205 municipal bus was 1800km.

Position paper nuclear cardiology: Update 2008

2009 ◽  
Vol 48 (02) ◽  
pp. 71-78 ◽  
Author(s):  
F. Bengel ◽  
U. Büll ◽  
W. Burchert ◽  
P. Kies ◽  
R. Kluge ◽  
...  
Keyword(s):  
Nuclear Medicine ◽  
Nuclear Cardiology ◽  
State Of The Art ◽  
Position Paper ◽  
Circulation Research ◽  
Diagnostic Algorithms ◽  
Clinical Diagnostic ◽  
Common Position ◽  
German Association

SummaryNuclear cardiology is well established in clinical diagnostic algorithms for many years. This is an update 2008 of the first common position paper of the German Association of Nuclear Medicine and the German Association of Cardiology, Heart and Circulation Research published in 2001 aiming at an overview of state-of-the-art scintigraphic methods.

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