| 摘要 |
A method of operating an apparatus for analysing the condition of a machine having a part rotating with a speed of rotation (fROT), includes: receiving a first digital signal (SRED, SMD, SENV) dependent on mechanical vibrations emanating from rotation of the part; analyzing the first digital signal (SRED, SMD, SENV) so as to detect peak amplitude values (Ap) during a finite time period (Pm), the finite time period corresponding to a certain amount (R) of revolution of the part; the certain amount of revolution corresponding to more than one revolution of the monitored rotatable part; defining a plurality (NR) of amplitude ranges; sorting the detected peak amplitude values into corresponding amplitude ranges so as to reflect occurrence (N) of detected peak amplitude values within the plurality of amplitude ranges; estimating a representative peak amplitude value (APR) in dependence on the sorted peak amplitude values and the certain amount (R). |
