Celeritas: a coloured Petri net approach to simulation and control of flexible manufacturing systems

1992 ◽  
Vol 30 (8) ◽  
pp. 1925-1956 ◽  
Author(s):  
ROBERT COSSINS ◽  
PLACID FERREIRA
Keyword(s):  
Petri Net ◽  
Flexible Manufacturing ◽  
Flexible Manufacturing Systems ◽  
Manufacturing Systems ◽  
Coloured Petri Net ◽  
Simulation And Control ◽  
And Control

Petri Net Based Modeling and Control Strategies for Flexible Manufacturing Systems

2006 ◽  
Author(s):  
A. Abhishek ◽  
Manish Kumar ◽  
Devendra P. Garg
Keyword(s):  
Petri Net ◽  
Flexible Manufacturing ◽  
Flexible Manufacturing Systems ◽  
Manufacturing Systems ◽  
Control Strategies ◽  
Dynamic Environment ◽  
Online Data ◽  
Modeling And Control ◽  
Learning Capabilities ◽  
And Control

This paper presents comprehensive and unified strategies to model, analyze, and control flexible manufacturing systems (FMSs) in an uncertain and dynamic environment using Petri Net (PN) based modeling. The proposed methodology enables PN models to accept and assimilate online data at execution time. A measurement system consisting of distributed sensory sources suitable for manufacturing processes is designed and an interface is developed of that system with the modeling software (SHARPE) and MATLAB's Simulink to enable realtime data acquisition and processing. The proposed strategies enable online parameter estimation to impart adaptive and intelligent learning capabilities to PN models.

A Method to Compute Siphons Based on Matrix Manipulation

2011 ◽  
Vol 88-89 ◽  
pp. 486-490
Author(s):  
Xue Peng Chen ◽  
Liang Xu Zhao ◽  
Shan Fa Lin ◽  
Wen Hui Wu
Keyword(s):  
Petri Nets ◽  
Petri Net ◽  
Flexible Manufacturing ◽  
Flexible Manufacturing Systems ◽  
Manufacturing Systems ◽  
Incidence Matrix ◽  
Sequential Processes ◽  
Matrix Manipulation ◽  
Structural Object ◽  
And Control

As a structural object of Petri nets, siphons are significant in the analysis and control of deadlocks in a Petri net. However, some existing siphon computation methods are quite time-consuming. In this paper, based on incidence matrix manipulation, a new method is proposed to compute a set of siphons in a class of Petri nets called systems of simple sequential processes with resources (S3PR). The proposed method consists of two algorithms: 1) computation of an unmarked maximal siphon and 2) obtain minimal siphons from an unmarked maximal siphon. A flexible manufacturing systems (FMS) example is used to illustrate the proposed method.

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