Active fault diagnosis in automated manufacturing systems: Modeled using interpreted Petri nets

Abstract

This paper deals with active diagnosis in Discrete Event System (DES) represented as Interpreted Petri Nets (IPN), which have been used to model an automated manufacturing system (AMS). In addition, a fault diagnosis scheme is implemented through residuals in an AMS controlled by a Mitsubishi PLC, which is monitored by an embedded system capable of measuring the current in the controllers in order to share information to the diagnoser, through the Modbus communication protocol with the purpose of increasing its reliability in the pronouncement.