Petri net based implementation of hierarchical and distributed control for discrete event robotic manufacturing systems

2010 ◽  
Author(s):  
Gen'ichi Yasuda
Keyword(s):  
Distributed Control ◽  
Petri Net ◽  
Manufacturing Systems ◽  
Discrete Event

Petri Net Model Based Design and Control of Robotic Manufacturing Cells

2012 ◽  
pp. 393-408
Author(s):  
Gen’ichi Yasuda
Keyword(s):  
Petri Nets ◽  
Petri Net ◽  
Manufacturing Systems ◽  
Discrete Event ◽  
Manufacturing Cells ◽  
Modeling And Control ◽  
Complex Manufacturing Systems ◽  
Task Specification ◽  
And Control ◽  
The Coordinator

The methods of modeling and control of discrete event robotic manufacturing cells using Petri nets are considered, and a methodology of decomposition and coordination is presented for hierarchical and distributed control. Based on task specification, a conceptual Petri net model is transformed into the detailed Petri net model, and then decomposed into constituent local Petri net based controller tasks. The local controllers are coordinated by the coordinator through communication between the coordinator and the controllers. Simulation and implementation of the control system for a robotic workcell are described. By the proposed method, modeling, simulation, and control of large and complex manufacturing systems can be performed consistently using Petri nets.

Petri Net Model Based Design and Control of Robotic Manufacturing Cells

2013 ◽  
pp. 385-400 ◽  
Author(s):  
Gen’ichi Yasuda
Keyword(s):  
Petri Nets ◽  
Petri Net ◽  
Manufacturing Systems ◽  
Discrete Event ◽  
Manufacturing Cells ◽  
Modeling And Control ◽  
Complex Manufacturing Systems ◽  
Task Specification ◽  
And Control ◽  
The Coordinator

The methods of modeling and control of discrete event robotic manufacturing cells using Petri nets are considered, and a methodology of decomposition and coordination is presented for hierarchical and distributed control. Based on task specification, a conceptual Petri net model is transformed into the detailed Petri net model, and then decomposed into constituent local Petri net based controller tasks. The local controllers are coordinated by the coordinator through communication between the coordinator and the controllers. Simulation and implementation of the control system for a robotic workcell are described. By the proposed method, modeling, simulation, and control of large and complex manufacturing systems can be performed consistently using Petri nets.

Distributed Maximally Permissive Nonblocking Control of Flexible Manufacturing Systems

2013 ◽  
pp. 36-60
Author(s):  
Renyuan Zhang ◽  
Yongmei Gan ◽  
W. M. Wonham ◽  
Zhaoan Wang
Keyword(s):  
Distributed Control ◽  
Petri Net ◽  
Flexible Manufacturing ◽  
Flexible Manufacturing Systems ◽  
Manufacturing Systems ◽  
Control Policy ◽  
Recent Theory ◽  
Automatic Guided Vehicle ◽  
Resource Allocation Systems ◽  
Production Cell

In recent years, a great deal of research has been focused on preventing deadlock in Flexible Manufacturing Systems. Policies based largely on Petri net models have been presented in the literature. Recently, a quite different approach has been developed based on supervisory control theory, and it has been adapted to solve the nonblocking maximally permissive control problem in various resource allocation systems, such as an Automatic Guided Vehicle system and a Production Cell. In this chapter, the authors obtain the corresponding control policy for a Flexible Manufacturing System, and from it derive an equivalent distributed control using the recent theory of supervisor localization.

Model Based Design and Implementation of Hierarchical and Distributed Control for Robotic Flexible Manufacturing System Cells Using Petri Nets

2011 ◽  
Vol 211-212 ◽  
pp. 856-860 ◽  
Author(s):  
Gen’ichi Yasuda
Keyword(s):  
Control System ◽  
Petri Nets ◽  
Distributed Control ◽  
Petri Net ◽  
Flexible Manufacturing ◽  
Discrete Event ◽  
Modeling And Control ◽  
Multithreaded Programming ◽  
Design And Implementation ◽  
Model Based

This paper deals with the modeling and control of discrete event robotic manufacturing cells using Petri nets, and proposes a methodology of model based design and implementation of hierarchical and distributed control. Hierarchical Petri net models are adopted; conceptual Petri net model and detailed Petri net model. The overall detailed Petri net model is decomposed into local Petri net models which are used by the local machine controllers. The upper level station controller coordinates the distributed local controllers so that the aggregate behavior of decomposed subnets is the same as that of the original Petri net. The overall control system is implemented using multithreaded programming based on Petri net based multitask processing. Simulation experiments show that the distributed Petri net model based control system can perform the overall multitask processing control by coincidence of the behavior of the real system with the local Petri net models.

Sign in / Sign up

Export Citation Format

Share Document