Web-based Distributed Flexible Manufacturing System (FMS) Monitoring

and Control    

Student: Wei Liu

Instructor: Dr. Chang

Apr. 23, 2003

AgendaAgenda

Introduction

Research Objective

Approach

Conclusions

IntroductionIntroduction

A flexible manufacturing system (FMS) is one manufacturing machine or multiple machines which are integrated by an automated material handling system, whose operation is managed by a computerized control system.

Next-generation FMS should be agile and flexible.

Advancements in Internet technology have made possible new and innovative methods for the remote connectivity and control of FMSs.

A Typical FMS SystemA Typical FMS System

Research ObjectiveResearch Objective

Develop an Internet-based monitoring and control system for flexible manufacturing systems (FMS) that aims to address the issues such as open architecture design and integration, socket connection and three-level heterogeneous client/server communication and control.

Extendibility

Interchangeability

Scalability

Portability

Interoperability

Consistency

Open Architecture CriteriaOpen Architecture Criteria

Client/Server Model and Heterogeneity Fusion

Object-Oriented Method and Component Model

Distributed Dynamic Integration and Function Reorganization

Technologies and Methodologies for the Technologies and Methodologies for the Design of Open Architecture Systems Design of Open Architecture Systems

Three-level Heterogeneous Three-level Heterogeneous Client/Server FrameworkClient/Server Framework

Component Model-based InterfacesComponent Model-based Interfaces

Monitoring & Control Function Monitoring & Control Function InterfaceInterface

Internet Connectivity & Internet Connectivity & Communication InterfaceCommunication Interface

Connectivity SchemeConnectivity Scheme

Connectivity Scheme for the FMS and the Web Server Communication Control: Serial communication (RS232C)

Connectivity Scheme for the Web Server and the client: (TCP)-based socket layer connection

Initialization

User Login

PasswordCorrect?

Yes

EstablishSession

Connection

Enable FMSControl

Authentication

Input UserName & ID

AuthorizedUser?

Yes

Enable FMSMonitoring& Control

Implementation

No

No

The Authentication The Authentication ProcessProcess

Configuration of the Prototype SystemConfiguration of the Prototype System

1. The Central CIM Computer Application Modules: RS232 communication, FMS monitoring & control Development Platform: Borland C++, ACL System Platform: DOS, ACL shell

2. The Web Server Application Modules: RS232 communication (server side module), Security

management (server side module), Security control (client & server sides modules), Socket control (client & server sides modules)

Development Platform: Visual C++, Visual Basic, Cosmo Code Java Platform System Platform: Windows NT, Internet Information Server

A Snapshot of the Prototype System A Snapshot of the Prototype System in Runin Run

ConclusionsConclusions

The open architecture design makes it easier for application systems to be extended and scaled.

The client/server model with heterogeneity fusion is an effect approach by which designers can focus on the picture of the entire system frame and not just the individual components.

The three-level heterogeneous framework, with the function control interface and the Internet connectivity and communication interface, considerably improves the implementation performance of the system on several major aspects: security, speed, efficiency, and reliability.

Questions?Questions?