Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Multi-vibration source mechanical equipment fault signal separation device and method

A vibration source mechanical equipment, fault signal technology, applied in the direction of measurement device, vibration test, machine/structural component test, etc., can solve the problem of obvious fault frequency components, signal processing, fault analysis is difficult to carry out, to overcome the difficulty of extracting , the effect of improving the accuracy

Inactive Publication Date: 2018-03-20
NANJING UNIV OF TECH
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for multi-vibration source equipment, due to the mutual interference between the vibration sources, the signals collected by traditional methods contain various noises, making subsequent signal processing and fault analysis difficult.
Direct collection of multi-source equipment fault signals is only suitable for single-source and faulty frequency components, which has great limitations

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multi-vibration source mechanical equipment fault signal separation device and method
  • Multi-vibration source mechanical equipment fault signal separation device and method
  • Multi-vibration source mechanical equipment fault signal separation device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0036] refer to figure 1 As shown, a multi-vibration source mechanical equipment fault signal separation device of the present invention includes the following units: a sensor 10 , a data preprocessing unit 20 , an independent component analysis unit 30 and a fault signal separation unit 40 . in:

[0037] The sensor 10 is used for collecting vibration signal data. Before installing the sensor 10, first determine the number of vibration sources in the equipment to be detected. It is necessary to install the sensor 10 at each vibration source. Signal, but also to ensure the safe operation of the sensor. The sensor used to collect vibration signals may be an acceleration sensor, such as a piezoelectric acceleration sensor, or a displacement sensor, a speed sensor, a force sensor, a strain sensor, a torsional vibration sensor, a torque sensor, and the like.

[0038] ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of signal acquisition and processing, and discloses a multi-vibration source mechanical equipment fault signal separation device and a method. The device comprises a sensor, a data preprocessing unit, an independent component analysis unit, and an independent component analysis unit. The sensor is used for collecting vibration signal data. The data preprocessing unit is used for preprocessing collected vibration signal data. The independent component analysis unit is used for eliminating the mutual interference among different vibration signals. Thefault signal separation unit is used for decomposing frequency components from vibration signals and reconstructing the frequency components into a fault characteristic frequency band signal. According to the multi-vibration source mechanical equipment fault signal separation device and the method, fault characteristic frequency band signals can be accurately separated from the vibration signalsof the multi-vibration source mechanical equipment. The problem that the fault signals of the multi-vibration source mechanical equipment are difficult to extract is solved, and the signal acquisitionaccuracy is improved.

Description

technical field [0001] The invention relates to the technical field of signal acquisition and processing, in particular to a multi-vibration source mechanical equipment fault signal separation device and method. Background technique [0002] At present, using vibration signals to diagnose equipment is the most effective and commonly used method in equipment fault diagnosis. The traditional method is to directly collect fault signals through sensors. However, for multi-vibration source equipment, due to the mutual interference between vibration sources, the signals collected by traditional methods contain various noises, making it difficult to carry out subsequent signal processing and fault analysis. The direct acquisition of multi-source equipment fault signals is only applicable to the case of single-source vibration and obvious fault frequency components, which has great limitations. It is necessary to effectively remove the mutual interference between the vibration sou...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/02
CPCG01M7/00
Inventor 赵云梁雪春夏美娟李果
Owner NANJING UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com