| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an apparatus for supporting acoustic diagnosis which easily recognizes an abnormality of a sound source generating an abnormal noise at a prescribed cycle when a malfunction occurs. <P>SOLUTION: In a system for supporting acoustic diagnosis, a sound collector 2 records measurement data of sound generated by a rotary machine 1 sampled at a prescribed frequency for a prescribed period of time longer than a rotation cycle. A diagnostic support device 3 acquires the measurement data from the sound collector 2. The diagnostic support device 3 extracts a reference data sequence for one cycle from the beginning of a first measurement data, extracts comparison data sequences for one cycle each from a n-th measurement data while shifting extraction positions, calculates a degree of correlation between the reference data sequence and each comparison data sequence, and determine an extraction position with the highest degree of correlation as a shift amount, then a second measurement data is shifted by the shift amount and added to the first measurement data. <P>COPYRIGHT: (C)2012,JPO&INPIT |
