A method for characterizing the evolution of state of health of a device with duration of operation

Abstract

A computer-implemented method for characterizing an evolution of the state of health of a population of devices with duration of operation comprises training a model on a database comprising, for each device among the population of devices, a value of duration of operation of the device and a corresponding state of health of the device, said model being a random process comprising at least a sum of: a term representing an average evolution of the state of health of the population of devices with duration of operation, and a term representing an inter-device variability of a degradation of the state of health at equal duration of operation, the variance of said term evolving with the duration of operation.

Dependencies are inferred from the claim text.