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A phenomenological modeling method for normal single-stage epicyclic gear train considering meshing phase difference

A technology of epicyclic gear trains and modeling methods, which is applied in belts/chains/gears, special data processing applications, instruments, etc., and can solve problems such as the difficulty of fault diagnosis of fixed-axis gear trains

Active Publication Date: 2017-02-15
XI AN JIAOTONG UNIV
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Problems solved by technology

The above factors make the fault diagnosis of epicyclic gear trains more difficult than that of fixed axle gear trains

Method used

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  • A phenomenological modeling method for normal single-stage epicyclic gear train considering meshing phase difference
  • A phenomenological modeling method for normal single-stage epicyclic gear train considering meshing phase difference
  • A phenomenological modeling method for normal single-stage epicyclic gear train considering meshing phase difference

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Embodiment Construction

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0037] In the planetary gearbox on the test bench of this embodiment, the ring gear is fixed, the sun gear is the input end, and the planet carrier is the output end; the specific parameters are shown in Table 1.

[0038] Table 1 Planetary gearbox parameters

[0039]

[0040] refer to figure 1 , a phenomenological modeling method for a normal single-stage epicyclic gear train considering the meshing phase difference, including the following steps:

[0041] 1) Calculate the phase difference between multiple planetary gears meshing with the sun gear, multiple planetary gears meshing with the ring gear, and the same planetary gear meshing with the sun gear and the ring gear in the epicyclic gear train. The process of calculating the phase difference is as follows :

[0042] 1.1) According to the initial installation position of the planetar...

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Abstract

A phenomenological modeling method for a normal single-stage epicyclic gear train considering the meshing phase difference. The phase difference between the meshing with the sun gear and the ring gear, analyzing the influence of different transmission paths on the signal during multiple meshing processes, establishing a vibration signal simulation model for the normal state of the planetary gear train, and giving the vibration response expression, this model breaks through only Considering the limitation of a certain influence on the meshing vibration in the gear system, the phase relationship between multiple pairs of meshes in the epicyclic gear train and the time-varying transmission path caused by the revolution of the planetary gear can be considered comprehensively. According to the phenomenological model, the vibration response signal of the normal single-stage epicyclic gear train is obtained, which can provide a basis for the fault diagnosis of the single-stage epicyclic gear train through experimental verification.

Description

technical field [0001] The invention belongs to the technical field of early fault diagnosis of mechanical equipment, and in particular relates to a phenomenological modeling method of a normal single-stage epicyclic gear train considering the meshing phase difference. Background technique [0002] The epicyclic gear train has always been the "share-humeral pillar" in the gear transmission system. The reason why it can be widely used in mechanical transmission in many industries such as wind power generation, aviation, shipbuilding, metallurgy, petrochemical, mining, lifting and transportation, etc., is its own The unique advantages play an indispensable and important role, such as compact structure, large transmission ratio, and high load-carrying efficiency. However, due to the harsh working environment of these devices, the epicyclic gear train usually works under the conditions of low speed, heavy load, or load, and the speed changes greatly instantaneously. Therefore, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50F16H57/08
CPCY02T90/00
Inventor 雷亚国刘宗尧林京卢帆勃罗希
Owner XI AN JIAOTONG UNIV
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