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Rotating equipment state abnormity judgment method and system

A technology for judging rotating equipment and abnormality, which is applied in the direction of measuring devices, instruments, characters and pattern recognition, etc., can solve problems such as abnormal status of rotating equipment, achieve the effect of eliminating noise signals and solving long-term dependence problems

Active Publication Date: 2020-06-09
HANGZHOU ANMAISHENG INTELLIGENT TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem that the existing method for judging the abnormality of the state of the rotating equipment cannot carry out the self-adaptive abnormal alarm of the state of the rotating equipment and realize the state prediction and evaluation, and provides a method and system for judging the abnormal state of the rotating equipment

Method used

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  • Rotating equipment state abnormity judgment method and system
  • Rotating equipment state abnormity judgment method and system
  • Rotating equipment state abnormity judgment method and system

Examples

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Embodiment 1

[0055] The first embodiment is a method for judging the abnormal state of a rotating equipment. Taking the acceleration data of the drive end collected on a motor simulation test bench as an example, the rotation speed of the motor is 4170 r / min.

[0056] Such as figure 1 Shown, including:

[0057] A) Collect motor vibration signals, obtain 2990 groups of motor vibration signals, and perform dual-tree complex wavelet packet 4-layer transformation on each group of collected motor vibration signals. Each group of motor vibration signals obtains 16 component signals, such as image 3 , Figure 4 As shown, image 3 Is the time domain diagram of one group of motor vibration signals, Figure 4 It is the time-domain diagram of each component signal obtained after the dual-tree complex wavelet packet transform of the vibration signal of the group of motors;

[0058] B) Calculate the frequency band energy of the 16 component signals of each group of motor vibration signals to obtain a charact...

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Abstract

The invention relates to the field of rotating equipment fault diagnosis, and discloses a rotating equipment state abnormality judgment method and system. The method comprises: A) collecting a rotating equipment vibration signal, and carrying out the dual-tree complex wavelet packet transformation of the rotating equipment vibration signal; B) calculating the frequency band energy of the vibrationcomponent signal of the rotating equipment; C) processing the characteristic parameter matrix by adopting a principal component analysis method to obtain a dimension-reduced characteristic parametermatrix; D) obtaining a rotating equipment vibration signal sample state evaluation value time sequence; and E) establishing a rotating equipment state abnormity alarm mechanism, and predicting the rotating equipment state evaluation value by adopting an LSTM method. The rotating equipment state prediction and evaluation are realized, the rotating equipment abnormity early warning can be realized,and the false alarm rate of rotating equipment abnormity judgment is reduced.

Description

Technical field [0001] The invention relates to the field of fault diagnosis of rotating equipment, in particular to a method and system for judging abnormal state of rotating equipment. Background technique [0002] In recent years, domestic aerospace, rail transit, electric power and other industrial production has developed towards systematization, digitization and automation. The mechanical system has become increasingly complex, and the requirements for process parameters and equipment reliability have increased. Rotating equipment carries long-term operation and is extremely prone to abnormalities, which further affects production efficiency and equipment performance. Therefore, the rotating machinery is monitored, the abnormality of the rotating equipment is detected in time, the early abnormal judgment of the rotating equipment is realized, the direct economic loss caused by the unexpected shutdown of the factory automation production line due to failure and maintenance i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/62G01H17/00
CPCG01H17/00G06F2218/06G06F2218/12G06F2218/08G06F18/213G06F18/241Y02P90/30
Inventor 李倩柳树林杨皓杰孙丰诚
Owner HANGZHOU ANMAISHENG INTELLIGENT TECH CO LTD
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