Archives

spacer

Fault data acquisition of shearer rocker gear

The working environment of shearer is bad, and the gear fault data of rocker transmission system is not easy to collect, so the gear fault simulation experiment of rocker transmission system is carried out by using the shearer rocker loading experimental platform. The loading test bench of shearer rocker...

spacer
spacer

Gear fault diagnosis based on multi scale fuzzy entropy

As a common part of mechanical equipment to transmit power and motion, gearbox has been widely used in modern mechanical equipment, such as metal cutting machine tools, aviation, electric power system, agricultural machinery, metallurgical machinery and so on, due to its advantages of fixed transmission ratio, compact structure and...

spacer

T-sne dimension reduction analysis of shearer rocker gear fault

In order to more clearly reflect the output classification status of features in each layer of RESNET model, t-sne technology is used to reduce and visualize the high-dimensional features of output of maximum pooling layer, pre activated residual unit module and full connection layer of RESNET model. The visualization...

spacer

Fault diagnosis model of shearer rocker gear based on RESNET

1. Selection of residual unit module In RESNET, there are two kinds of residual unit modules: original residual unit module and pre activated residual unit module. Residual unit module is mainly composed of weight layer, batch normalization (BN) layer and relu. The weight layer is used to extract features,...

spacer
spacer
spacer

Types and causes of gearbox faults

The gearbox has a certain design service life, and it will fail due to wear after a certain period of operation under normal condition. In addition, manufacturing, assembly, operation, use and maintenance and other reasons will also cause failure of various components of the gearbox. In the main components...

spacer

Advantages of cepstrum analysis in gear fault diagnosis

Cepstrum analysis plays a special role in gear fault diagnosis, especially in side band analysis. Because the frequency spectrum of the actual gearbox vibration signal is very complex, when there are several side bands crossing each other, it is not enough to rely on the frequency refinement analysis method...

spacer