Bevel-helical speed reduction gearbox B4 ement heating elements heating elementsAS B4-FH-13B

Flender/Flender Gear Units/Bevel-helical speed reduction gearbox B4

where care of the driven machine used, process optimisation and cost saving are concerned. The drive solutions shown are only some of the possible combinations based on common output speed range of bucket conveyor drives. At your request we would be pleased to design other drive variants to suit your special applications , optimally combine mechanical and electronic components and prepare qualified quotation.Bandantriebe 0.0 EN 3 /TC 2/0 FLENDER TBINGEN GmbH Bahnhofstr. 4-4 -7 Tbingen Telefon +4 (0) 7 7/7 0-0 Telefax +4 (0) 7 7/7 0-4 0 http:// FLENDER GRAFFENSTADEN flender speed reducers -Mail: sales-motox FLENDER GRAFFENSTADEN flender-motox speed reducers Combining synchronous averaging with Gaussian mixture model novelty detection scheme for vibration-based condition monitoring of gearbox Heynsa,,, PS Heynsc, JP de Villiersa, aDepartment of Electronic and Computer Engineering, University of Pretoria bDefence Peace Safety and Security (DPSS) division of the Council for Scientic and Industrial Research (CSIR) of South Africa cDynamic Systems Group, Department of Mechanical and Aeronautical Engineering, University of Pretoria Abstract This paper investigates how Gaussian mixture models (GMM) may be used to detect and trend fault induced vibration signal irregularities, such as those which might be indicative of the onset of gear damage. The negative log likelihood (NLL) of signal segments are computed and used as measure of the extent to which signal segment deviates from reference density distribution which represents the healthy gearbox. The NLL discrepancy signal is subsequently synchronous averaged so that an intuitive, yet sensitive and robust, representation may be obtained which offers insight into the nature and extent to which gear is damaged. The methodology is applicable to non-linear, non-stationary machine response signals. Keywords: Condition based maintenance, Negative log likelihood transform, Gaussian mixture model, Synchronous averaging 1. Introduction Time synchronous averaging (TSA) has been prop