| 摘要 |
A mechanical signature analysis system for analyzing frequencies and magnitudes of vibrations in an operating test disc drive includes a test data acquisition module connected to the test disc drive to acquire time domain test data and convert it into frequency domain test data, a typical disc drive data module having frequency domain data for a typical disc drive, and a failure analysis module having failure limits associated with the typical disc drive frequency domain data to determine whether the test data are within the failure limits. An output module displays failure analysis results. A method of determining a typical disc drive frequency used in analyzing vibrations in a test disc drive includes calculating a theoretical disc drive frequency that is a function of electromechanical characteristics of a class of disc drives, searching a configuration file of typical disc drive frequency data, and identifying in the configuration file a peak magnitude within a predetermined range of frequencies around the theoretical frequency.
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