DocumentCode :
1546665
Title :
Radiometric online ash monitor for coal industry using fuzzy logic
Author :
Cierpisz, Stanislaw ; Heyduk, Adam
Author_Institution :
Dept. of Electr. Eng. & Process Control in Min., Silesian Univ. of Technol., Gliwice, Poland
Volume :
50
Issue :
5
fYear :
2001
fDate :
10/1/2001 12:00:00 AM
Firstpage :
1176
Lastpage :
1180
Abstract :
Online nuclear meters have been in use in the coal industry for many years. They have been utilized for coal quality monitoring, in the control systems for coal blending, or for separating coals in the heavy media separation process. Their operation is based on the scattering or the absorption of incident gamma radiation, and the derived density or ash value is the result of a time-averaged measurement. In this paper, dynamic models of ash monitors have been presented and discussed. The analysis of monitors with constant time of measurement shows that it is possible to determine the optimal time for which the dynamic error is the smallest. The analysis also shows that the monitors in which the time of measurement is variable and adapts to changes of the input signal give better results. A fuzzy logic decision table has been applied to control the time of measurement according to variations of the input signal. The simulation of the system operation has been performed with the use of the Matlab (Simulink) program package
Keywords :
coal; computerised monitoring; fuzzy control; fuzzy logic; gamma-ray applications; gamma-ray detection; process monitoring; Matlab program package; Poisson discrete noise generator; Simulink program package; ash monitors; ash value; coal blending; coal industry; coal quality monitoring; constant time of measurement; control systems; density value; dynamic error; dynamic models; fuzzy logic decision table; heavy media separation process; incident gamma radiation; online ash monitor; online nuclear meters; optimal time; time-averaged measurement; variable measurement; Ash; Control systems; Electromagnetic wave absorption; Fuel processing industries; Fuzzy logic; Monitoring; Radiometry; Scattering; Separation processes; Time measurement;
fLanguage :
English
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9456
Type :
jour
DOI :
10.1109/19.963180
Filename :
963180
Link To Document :
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