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This paper deals with detecting defects in a multistage gearbox. The gearbox is driven by an induction motor and the output shaft of the gearbox is connected to a DC generator and a DC tacho-generator. The ripple current and voltage signals supplied by these generators are analyzed for a defect-free gearbox and a defective gearbox with two teeth missing in a particular gear. Multiresolution Fourier...
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