Elevators are widely used vertical transportation devices in daily life. With the surge in global elevator installations, demand has gradually shifted from new installations to the maintenance of in-service elevators and the modernization of older units. This has led to a growing need for elevator operational condition monitoring and predictive maintenance. Failure mode, mechanism, and effects analysis (FMMEA) provides an effective framework for analyzing possible elevator failure modes, failure detection methods, and underlying mechanisms leading to failures. The FMMEA results clarify the failure mechanisms and the priority of various failure modes, which can serve as a foundation for the development of intelligent maintenance methods. This paper takes an elevator door system as an example, using FMMEA to analyze elevator door system failures to optimize maintenance strategies and improve the efficiency of daily elevator maintenance.

Elevator,door system,FMMEA,prognostics and health management