Matrix based logic controller

This paper deals with the modelling, dynamic description and control of the discrete event systems within the scope of flexible manufacturing systems and machines control logic design. The modelling of discrete event systems is based on a matrix description of Petri nets. The matrix representation is supplemented with PN next-state function and discrete event controller equation which enables the dynamic description of the discrete event system. The control of the discrete event system is ensured by introducing the transition condition inputs. Such a description of discrete event system enables the simulation of the system and analysis of its performances before the target system is actually built. The target system in this paper is a cutting machine transport system. Using the proposed method, the fault response properties of target system are simulated and analyzed.