Computer-Aided Design, Engineering, and Manufacturing

Systems Techniques and Applications, Volume II, Computer-Integrated Manufacturing

Cornelius T. Leondes

• Publisher: CRC Press
• Year: 2019
• ISBN:
  9780429525513
• Edition: 1
• Topic: Business
• Subtopic: Manufacturing
• Index: Business

In the competitive business arena companies must continually strive to create new and better products faster, more efficiently, and more cost effectively than their competitors to gain and keep the competitive advantage. Computer-aided design (CAD), computer-aided engineering (CAE), and computer-aided manufacturing (CAM) are now the industry standa

1

System Approach to the Design of Generic Software for Real-Time Control of Flexible Manufacturing Systems (FMS)

1.1 Preface

1.2 Dedication

1.3 Introduction

1.4 Fundamental Steps of the Modeling Process

1.5 Specification of the Model Static Structure

Workstations • Transport System

1.6 Queuing Network Configuration

Production Activity Configuration • Job Configuration • Server Configuration • Transport System Configuration • Definition of the Queuing Network Configuration

1.7 Scheduling Policy

1.8 The Discrete Event Dynamic System Model

Events • The DEDS Model

1.9 An Example of How the Modeling Process

The Model Static Structure of the Application Example • The Queuing Network Configuration of the Application Example • The Applied Scheduling Policy

1.10 The Generic Control Software Organization

The Control Hierarchy • Objects and Architecture of the Control Software

1.11 Conclusions

Appendix: List of Principal Symbols

Maria Pia Fanti

Politecnico di Bari

Bruno Maione

Politecnico di Bari

Giacomo Piscitelli

Politecnico di Bari

Biagio Turchiano

Politecnico di Bari

1.1 Preface

The control system is the core of any flexible manufacturing system (FMS) because it confers to the plant the capability to absorb internal changes and external fluctuations in demand and in production environment. However, the technical literature has repeatedly documented that poor control software design is the major source of difficulties in implementing FMSs. Namely, the FMS potentiality is not yet fully utilized, because typical, contemporary control software packages are still proprietary and do not possess flexibility and genericity. On the contrary, reducing the programming and reprogramming effort needs a generic software usable in an arbitrary FMS, producing an arbitrary part mix.

To design a generic software, two main problems must be solved. The former is to define an abstract formalism representing both hardware/software components of the FMS and the production plans. The latter consists in identifying a modular architecture of the control software capable of integrating standard modules.

To solve the first problem, we use a system approach leading to a discrete event dynamic system (DEDS) that constitutes a formal framework providing information on both the current operating conditions of the shop floor (SF) and the production progress. To face the second problem, we use the object-oriented approach to design the kernel of the generic control software. The resulting modular architecture is organized so that modules and interfaces among them can be replaced without altering the overall functionality.

1.2 Dedication

To our parents

Maria Pia Fanti, Biagio Turchiano

To the memory of my parents

Bruno Maione

1.3 Introduction

In recent years, the worldwide competition and the growing demand for a high variety of products have emphasized th...

Table of contents

• Cover
• Half Title
• Title Page
• Copyright Page
• Preface
• Editor
• Contributors
• Table of Contents
• Chapter 1 System Approach to the Design of Generic Software for Real-Time Control of Flexible Manufacturing Systems (FMS)
• Chapter 2 Computer-Integrated Assembly for Cost Effective Developments
• Chapter 3 Multi-Level Decision Making for Process Planning in Computer-Integrated Manufacturing (CIM) Systems
• Chapter 4 A Computer-Aided and Integrated Machining System
• Chapter 5 Intelligent Set-Up Planning Systems for Parts Production in Manufacturing Systems
• Chapter 6 Object-Oriented Modeling and Simulation of Multipurpose Batch Plants
• Chapter 7 Scheduling Systems and Techniques in Flexible Manufacturing Systems
• Chapter 8 Automated Systems Techniques for On-Line Quality and Production Control in the Manufacture of Textiles
• Index