Invention Grant
- Patent Title: Method of analyzing non-synchronous vibrations using a dispersed array multi-probe machine
- Patent Title (中): 使用分散阵列多探针机分析非同步振动的方法
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Application No.: US12141263Application Date: 2008-06-18
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Publication No.: US07866213B2Publication Date: 2011-01-11
- Inventor: Michael Twerdochlib
- Applicant: Michael Twerdochlib
- Applicant Address: US FL Orlando
- Assignee: Siemens Energy, Inc.
- Current Assignee: Siemens Energy, Inc.
- Current Assignee Address: US FL Orlando
- Main IPC: G01H1/00
- IPC: G01H1/00 ; G01B7/14
Abstract:
A method for identifying an unfolded non-synchronous blade vibration frequency in blades on a rotating rotor using a plurality of probes spaced from each other about the rotor. A set of data is acquired from the probes during a predetermined number of rotor revolutions and is processed using a Fourier analysis to generate an output representative of frequencies and phase shift angles corresponding to blade vibrations. The phase shift angles are used to identify a subharmonic for a blade vibration frequency to provide an output identifying the vibration frequency. A space dispersion and time dispersion of probes is described to increase the accuracy of the subharmonic determination using the phase shift angles.
Public/Granted literature
- US20090314092A1 Method of Analyzing Non-Synchronous Vibrations Using a Dispersed Array Multi-Probe Machine Public/Granted day:2009-12-24
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