发明名称 |
DIAGNOSTIC SYSTEM FOR UNBALANCED MOTOR SHAFTS FOR HIGH SPEED COMPRESSOR |
摘要 |
A diagnostic system for determining whether a rotor shaft of a compressor is unbalanced. The compressor includes a displacement sensor that measures the displacement of the rotor shaft as it is rotating. The sensor dynamic frequency signal is sent to a bandpass filter that filters out an eigen-frequency frequency that is a function of shaft elasticity and rotor dynamics. The filtered frequency signal is then rectified by a rectifier to make the filtered frequency signal positive. The rectified signal is then passed through a low pass filter that converts the rectified signal to a DC signal. The DC signal is then sent to a controller that determines if the amplitude of the signal is above a predetermined threshold, which indicates a problem with the balance of the compressor.
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申请公布号 |
US2008044702(A1) |
申请公布日期 |
2008.02.21 |
申请号 |
US20060464540 |
申请日期 |
2006.08.15 |
申请人 |
GM GLOBAL TECHNOLOGY OPERATIONS, INC. |
发明人 |
MAIER OLIVER;ELGAS BERND PETER;DUMKE ULRICH;WILLIMOWSKI PETER |
分类号 |
H01M8/04;H02H7/00 |
主分类号 |
H01M8/04 |
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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