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To effectively extract the fault feature information of rolling bearings and improve the performance of fault diagnosis, a fault diagnosis method based on principal component analysis and support vector machine was presented, and the rolling bearings signals with different fault states were collected. To address the limitation on effectively dealing with the raw vibration signals by the traditional...
Rectifier units is widely used in electrochemical and the metallurgical industry,stability and reliability are required.This paper studied the fault classification and diagnosis method of the bridge 6-pulse waveform controlled rectifier circuit based on Support Vector Machines.All the faults in thyristors were analyzed, the fault classification method according to the rectifier aberrant voltage waveforms...
Multi-pulse rectifier unit can effectively limit the number of harmonics injected into the grid frequency in micro-grid,but thyristor open-circuit or short-circuit fault may occur if don't handle in time, the power side and load side will have serious consequences. Studying fast detection device of the thyristor fault has an important significance for rapidly inhibiting the spread of fault effects,reducing...
Different from land power system, marine high power rectifier power transformation device usually use thyristor as power devices. Thyristor open-circuit or short-circuit fault may occur if don't handle in time, the power side and load side will have serious consequences. Studying fast detection device of the thyristor fault has an important significance for rapidly inhibiting the spread of fault effects,...
A fault situation occurs to a service needs to be well analyzed and handled in order to ensure the reliability of composite service. The analysis can be driven by understanding the impact caused by the faulty service on the other services as well as the entire composition. Existing works have given less attention to this issue, in particular, the temporal impact situation caused by the fault. Thus,...
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