ABNORMALITY DIAGNOSING METHOD OF MECHANICAL FACILITY OR APPLIANCE

摘要: PROBLEM TO BE SOLVED: To provide an abnormality diagnosing method capable of reducing the calculation load for abnormality, and detecting presence or absence with high accuracy in a short time. SOLUTION: A signal representing sound vibration detected by sensor 1 is amplified amplifier 2, converted into digital AD converter, inputted to computer 4 diagnosis. The diagnosis includes frequency analyzing program perform In diagnosis, spectral its envelope determined, only component causing rotating body member related body, extracted, determined on basis magnitude extracted component. COPYRIGHT: (C)2003,JPO