Fault diagnosis method based on MED and fuzzy entropy for vibration signal of planetary gearbox
A planetary gearbox and vibration signal technology, which is applied in the testing of mechanical components, testing of machine/structural components, measuring devices, etc., can solve the problems of submerged fault frequency, low characteristic frequency, complex side frequency bands, etc., and achieve the elimination of modes The effect of aliasing and filtering out the interference of the characteristic frequency
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[0048] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0049] A method for fault diagnosis of planetary gearbox vibration signals based on MED and fuzzy entropy, comprising the following steps:
[0050] (1) Build the wind turbine experimental device, the schematic diagram of the wind turbine experimental device is as follows figure 1 As shown, the wind turbine experimental device includes a drive motor 1, a main shaft 2, a first torque speed sensor 3, a single-stage cylindrical gearbox 4, a single-stage planetary gearbox 5, a first rolling bearing 6, a first coupling 7, a first Two torque speed sensors 8 , a first rolling bearing 9 , a first coupling 10 and a load motor 11 . The driving motor simulates the torque input of the wind wheel, and is connected to the load motor after two-stage gear transmission. In order to simulate the time-varying characteristics of the speed of the wind rotor, a fre...
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