method of analysis of a sequence of measures a signal characteristic of a system for the diagnosis of preventive system

摘要

Method of analysis of a time series of measurements of a signal that is characteristic of a system (1) for the preventive diagnosis of the system (1) itself; the method of analysis comprises the steps of: building a time series of calibration measurements; building a time series of diagnosis measurements; defining a finite set of models present in the time series of calibration measurements; determining a first normalized frequency distribution of the models occurring in the time series of calibration measurements; determining a second normalized frequency distribution of the models occurring in the time series of diagnosis measurements; comparing the first normalized frequency distribution with the second normalized frequency distribution; and diagnosing the presence of mutations in the characteristic signal if the second normalized frequency distribution is significantly different from the first normalized frequency distribution.