EXTRACTION OF SIGNAL OF INTEREST FOR BEARINGS DIAGNOSTICS USED IN BELT
CONVEYOR PULLEYS BY ADAPTIVE FILTERING AND LINEAR PREDICTION
1
Politechnika Wrocławska, Wydział Geoinżynierii, Górnictwa i Geologii
Mining Science 2008;X(1):154-166
ABSTRACT
The paper deals with local fault detection procedure for bearings used in pulleys from driving unit in
belt conveyor systems. Due to design factors and different nature of signals generated by elements of
driving units diagnostic signals measured from bearing’s housing are corrupted by signal generated by
last stage of gearbox driving the pulley. There is a need to separate signals from damaged bearing from
signal produced by gearbox. Similar problem was formulated by Randall for high speed gearbox used in
helicopters. As a one of possible solution linear prediction based adaptive filtering was used. Aim of this
paper is to apply this approach. Reason to check it is that diagnosed object is characterized by different
(than helicopter’s gearboxes) dimensions, speed, frequencies etc. It should be noted that without separation
obtaining proper diagnosis is very difficult.
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| eISSN: | 2353-5423 |
| ISSN: | 2300-9586 |
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