An Improved Calculation Order Analysis Method for Non-stationary Vibration Signals of Rotating Machinery

Abstract

The invention discloses an improved calculation order ratio analysis method for the non-stationary vibration signal of a rotating machine. The method includes: performing preprocessing on the key phase pulse signal to obtain a time point sequence, a time difference sequence, and a time gain sequence; The similarity operation is performed on the time gain sequence of the similarity operation, and the acceleration classification is performed on the similarity coefficient sequence obtained by the similar operation to obtain the gain classification sequence. The gain classification sequence is reversely deduced from the time difference sequence and the time point sequence to obtain the classification time point sequence, and the classification time point is used. The non-stationary vibration signal is resampled in the angular domain to obtain the resampled signal in the angular domain, and the fast Fourier transform is performed on the resampled signal in the angular domain to obtain the order spectrum. The invention can be effectively used in the calculation order analysis of the non-stationary vibration signal of the rotating machine, and has higher calculation efficiency than the traditional method.

Description

technical field [0001] The invention relates to an improved calculation order ratio analysis method of a non-stationary vibration signal of a rotating machine, which belongs to the technical field of mechanical equipment state monitoring and fault diagnosis. Background technique [0002] Due to objective factors such as working environment and time-varying working conditions, and even human factors, rotating mechanical equipment will be in an unsteady motion state in practical applications. In practical applications, there are few rotating mechanical equipment that can stably move in a stable state. For example, the planetary gearbox in the wind power industry, in its actual application, will cause time-varying working conditions due to the particularity of the working environment, so that the planetary gearbox is often in a state of non-stationary motion with time-varying speed. Therefore, it is of great significance to carry out fault diagnosis and condition monitoring of ...

AI Technical Summary

Problems solved by technology

The traditional calculation order analysis method has the problem of low calculation efficiency due to too many iterations, so that the actual application of the calculation order analysis method in today's big data era, such as online monitoring, real-time monitoring, etc., requires high calculation efficiency and real-time monitoring. However, there is a problem of insufficient computing efficiency in the field with high performance requirements, which is not conducive to its practical application in this field.

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