Prognosis and estimation of time to failure (RUL)
PHM – Prognostics and health management
Article REF: MT9570 V1
Prognosis and estimation of time to failure (RUL)
PHM – Prognostics and health management

Authors : Rafael GOURIVEAU, Kamal MEDJAHER, Emmanuel RAMASSO, Noureddine ZERHOUNI

Publication date: April 10, 2013 | Lire en français

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2. Prognosis and estimation of time to failure (RUL)

2.1 What? prognosis – definition and measurements

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2.1.1 Prognosis concept

Many definitions of the term prognosis have been proposed, and there is no totally consensual one. However, one salient feature can be identified: prognosis is often equated with a predictive process (a future situation must be apprehended). Depending on the case, it refers to a process aimed at determining the remaining lifetime of a system, i.e. its DEFAD (duration of operation before failure), or the probability that the system will operate...

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