Fault Diagnosis Using Qualitative Knowledge

5/12/98


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Table of Contents

Fault Diagnosis Using Qualitative Knowledge

Outline

What is a process system fault?

Examples

Faults

Outline

Qualitative Methods

Quantitative Methods

More Specifically:

State Estimation Techniques- Simple

Disturbance Estimation Technique

Moving Horizon Methods

Model Predictive Control

Moving Horizon Estimation

NL Moving Horizon General Form

Initial State Estimate Approach

Error in Variables (Kim, Biegler)

Propositional Logic (Tyler, Morari)

Outline

New Method

Advantages

Method Parameters

LP Simplex-Very Simple Overview

Relaxation: Definition

LP Relaxations

Branch and Bound, Minimize, Depth First

Outline

Continuous Stirred Tank Reactor (CSTR)

Van Der Vusse CSTR

PPT Slide

Steady State Manifold

Asymmetric Response +/-50% Feed Rate Step

Possible Faults

Considerations

Future Directions

Conclusions

Acknowledgements

Author: Doyle Research

Email: gatzke@udel.edu

Home Page: http://udel.edu/~gatzke