Current Search:  Flexible manufacturing systems (x)

View All Items

  • CSV Spreadsheet
(1 - 3 of 3)
petri net framework for the simulation and control of automated systems
Title
A petri net framework for the simulation and control of automated systems.
Creator
Murgatroy, Richard John, Jr., Florida Atlantic University, Masory, Oren, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description
This thesis presents a programming framework in the C language to execute a petri net simulation and real-time control for an automated system. This framework allows for the simulation of a proposed flexible automated system, and also the simultaneous development of the real-time control. The system is based on petri nets, which are used to model the system. Basic petri net theory and the construction of models using petri nets are discussed. The program is designed to allow a hierarchical...
Show moreThis thesis presents a programming framework in the C language to execute a petri net simulation and real-time control for an automated system. This framework allows for the simulation of a proposed flexible automated system, and also the simultaneous development of the real-time control. The system is based on petri nets, which are used to model the system. Basic petri net theory and the construction of models using petri nets are discussed. The program is designed to allow a hierarchical structure to the petri net model, and a modular approach to the program design is taken using some concepts from object oriented programming. The program provides a time-based diagnostic system incorporated into the framework to detect problems during the execution of the actual system. An example application is provided to demonstrate the implementation of the framework to both simulate and control an actual system.
Show less
Date Issued
1995
PURL
http://purl.flvc.org/fcla/dt/15226
Subject Headings
Petri nets, Computer integrated manufacturing systems--Computer simulation, Flexible manufacturing systems--Computer simulation
Format
Document (PDF)
Object-oriented design of flexible manufacturing systems
Title
Object-oriented design of flexible manufacturing systems.
Creator
Abou-Haidar, Bassam., Florida Atlantic University, Fernandez, Eduardo B.
Abstract/Description
This thesis presents a systematic method for the design and modeling of flexible manufacturing systems, using object-oriented concepts and Petri nets. In the method proposed, we first define the system components in terms of an object model consisting of hierarchical sets of classes and operations. Secondly, we model the dynamic aspects of the system using statecharts, including exceptions. As a third step, we derive Petri nets from those statecharts to realize the concurrency present in the...
Show moreThis thesis presents a systematic method for the design and modeling of flexible manufacturing systems, using object-oriented concepts and Petri nets. In the method proposed, we first define the system components in terms of an object model consisting of hierarchical sets of classes and operations. Secondly, we model the dynamic aspects of the system using statecharts, including exceptions. As a third step, we derive Petri nets from those statecharts to realize the concurrency present in the system. Finally we develop a hierarchy of controllers, corresponding to the layers of the object model, for the independent components of the system based on the Petri nets obtained in the previous step.
Show less
Date Issued
1993
PURL
http://purl.flvc.org/fcla/dt/14989
Subject Headings
Petri nets, Flexible manufacturing systems, Object-oriented programming (Computer science), Real-time control
Format
Document (PDF)
Tool wear monitoring using artificial neural networks
Title
Tool wear monitoring using artificial neural networks.
Creator
Kurapati, Venkatesh., Florida Atlantic University, Masory, Oren, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description
An on-line scheme for monitoring tool wear in unmanned machining operations using artificial neural networks (ANNs) is proposed. Various configurations of ANNs are studied to increase the accuracy of tool wear estimation. With this aim three configurations of the ANNs namely, an ANN without memory, an ANN with one phase memory, and an ANN with two phase memory are considered. Each ANN is trained to associate an input vector which consists of values of cutting conditions, with an output vector...
Show moreAn on-line scheme for monitoring tool wear in unmanned machining operations using artificial neural networks (ANNs) is proposed. Various configurations of ANNs are studied to increase the accuracy of tool wear estimation. With this aim three configurations of the ANNs namely, an ANN without memory, an ANN with one phase memory, and an ANN with two phase memory are considered. Each ANN is trained to associate an input vector which consists of values of cutting conditions, with an output vector containing flank wear as a single output. The training data and evaluation data is generated using the popular analytical tool wear model. The performance of all the ANNs are compared by considering four different cases of evaluation data. The proposed scheme of tool wear modeling using ANNs is easily extendible to include other cutting parameters and can be implemented in real-time.
Show less
Date Issued
1992
PURL
http://purl.flvc.org/fcla/dt/14868
Subject Headings
Neural networks (Computer science), Flexible manufacturing systems, Power tools, Machine tools--Data processing
Format
Document (PDF)