Patent ID: 6898551
Filing Date: 2005-05-24
Classification: G01H,G05B

Abstract:
1. A system for predicting life of a rotary machine, comprising: a vibration gauge configured to measure time series data of a peak acceleration of the rotary machine: a band pass filter configured to filter an analog signal of the time series data of the peak acceleration measured by the vibration gauge in a frequency band including a first analysis frequency expressed as a product of an equation including a number of rotor blades of the rotary machine and a normal frequency unique to the rotary machine, the equation expressed as [n+(l/m)], where m is the number of rotor blades, and n, l are arbitrary positive integers; and a data processing unit configured to predict a life span of the rotary machine by characteristics of the filtered analog data of the time series data of the peak acceleration with the first analysis frequency.