发明名称 |
Determining narrowband envelope alarm limit based on machine vibration spectra |
摘要 |
The disclosed invention senses a machine's vibration spectrum, converts the vibration signal into a frequency-domain vibration spectrum, and analyzes the vibration spectrum to generate a narrowband alarm limit envelope against which the vibration spectrum of a previously uncharacterized machine may be compared. The limit envelope is generated from the test vibration spectrum of the machine which is the subject of the test, thus providing a performance benchmark against which to compare the vibration level of the previously uncharacterized machine. A limit envelope is also generated from a test vibration spectrum which has been designated as a reference or baseline spectrum. Further, a limit envelope is generated based upon a mean spectrum which is generated by combining several test vibration spectra. A limit envelope is also generated based upon mean and standard deviation spectra when a statistically significant number of test spectra are available.
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申请公布号 |
US5922963(A) |
申请公布日期 |
1999.07.13 |
申请号 |
US19970874333 |
申请日期 |
1997.06.13 |
申请人 |
CSI TECHNOLOGY, INC. |
发明人 |
PIETY, KENNETH R.;SLEMP, MARK W.;BETHMANN, JR., WILLIAM F. |
分类号 |
G01M13/00;G01N29/04;(IPC1-7):G01N29/04 |
主分类号 |
G01M13/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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