Diesel engine gear abnormal sound identification method based on wav file

Abstract

The invention discloses a diesel engine gear abnormal sound recognition method based on a wav file. The method comprises the following steps step 1, arranging a noise sensor (4) above a diesel engine (3) to collect a wav noise audio file; step 2, transmitting the wav noise audio file to a computer (1) through a signal recorder (2); step 3, collecting wav noise audio files of N diesel engine samples, and recording gear abnormal sound fault states corresponding to the wav noise audio files; step 4, establishing a gear abnormal sound recognition model based on the N wav noise audio files, wherein the input of the gear abnormal sound recognition model is the wav noise audio files, and the output of the gear abnormal sound recognition model is a judgment value Y; and step 5, inputting any wav noise audio file of the diesel engine into the gear abnormal sound recognition model, and judging whether the diesel engine is qualified or not according to the judgment value Y. According to the invention, the on-line product qualification condition can be checked in real time during diesel engine production, the troubleshooting accuracy is high, and the production rate of the diesel engine is not affected.

Description

Technical field [0001] The present invention relates to a method of failure detection of diesel engines, and more particularly to a Wav (Wave form, ie waveform) file based diesel engine gearis index method. Background technique [0002] Abnormal sound is a common fault of diesel engines, for example: gear meshing aloud, excessive diesel gaps are too large or too small, and the cylinder pad is iseonded. Among them, the cause of the gear meshing is more complicated, the shape and position error of each gear hole, the gear eccentric error, the tooth error, the tooth error, etc., the periodic impact and the non-periodic vibration of the gear engagement, thereby producing Periodic and non-periodic gears meshing aloud. [0003] The main method of identifying gears in the prior art is: Professional testing and analysis software developed by Siemens, BK, Land, etc., but these software require NVH 's theoretical knowledge, through complex FFT, order, COLORMAP and other techniques and expe...

AI Technical Summary

Problems solved by technology

This patent is used for the troubleshooting of gear abnormal sound of diesel generator sets, not a single diesel engine, and the premise of this troubleshooting method is that the initial state of the diesel engine generator set is fault-free, and there are obvious faults after use. This method The application scenario is special, not universal, and cannot be used for troubleshooting the abnormal noise of diesel engine gears in the production stage

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