Fault Diagnosis and Prognosis for Reliability Enhancement

This chapter discusses how the diagnosis and prognosis tools can be integrated with the design and operation of a drive for high reliability. It also discusses the sources of reliability information about components, how this information can be included in the reliability estimation, and how prognosis can lead to a more reliable drive. The chapter describes additional metrics based on the costs associated with the operation and management of a fault, and provides new metrics of reliability. It covers the reliability of subsystems and systems, reliability prediction, lifetime prediction, and fault management and mitigation. The chapter presents the model of the electric propulsion system operation as a stochastic model of multi‐state system reliability with the change of discrete operating modes: start, acceleration, constant speed, deceleration, and stop. It also provides the details of scheduled maintenance, condition‐based maintenance and prognosis‐enhanced reliability.