Patent ID: 7065469

Claim:
A manufacturing apparatus which includes a rotary machine, comprising: a plurality of accelerometers, configured to measure diagnosis time series data of vibrations of the rotary machine, attached to the rotary machine at locations where variations in the vibrations are different; a frequency analysis device configured to perform a frequency analysis on the diagnosis time series data measured by the plurality of accelerometers; a time series data recording module configured to generate diagnosis data from the analyzed diagnosis time series data based on variations in characteristics of the vibrations corresponding to an analysis target frequency and to record the diagnosis data, the analysis target frequency being expressed as a product of an equation including a reciprocal number of rotor blades of the rotary machine and a normal frequency unique to the rotary machine, the equation including the reciprocal number of the rotor blades expressed as n+(l/m), where m is the number of the blades, and n, l are arbitrary positive integers; and a life prediction unit configured to analyze the diagnosis data to determine a life span of the rotary machine.