Fault diagnosis using qualitative reasonings about dynamic behavior.

Qualitative Multiple - Fault Diagnosis of Continuous Dynamic

vii Chapter

Multiple-Fault Diagnosis Using General Qualitative Models with Fault Modes

This paper describes an approach to diagnosis of systems described by qualitative diierential equations represented as Qsim models. An implemented system Qdocs is described that performs multiple-fault, fault-model based diagnosis , using constraint satisfaction techniques , of qualitative behaviors of systems described by such models. We demonstrate the utility of this system by accurately dia...

Dynamic process monitoring and fault diagnosis with qualitative models

18] P. M. Frank. Fault diagnosis in dynamic systems using analytical and knowledge-based redundancy { a survey and some new results. detection in an experimental heat exchanger process: a multiple model approach. Knowledge-based diagnosis systems for continuous process operations based upon the task framework. 26 models to the data in a Qmimic-style system is currently being studied 33]. A comp...

Qualitative Methods for Fault Diagnosis

Qualitative Multiple-Fault Diagnosis of Continuous Dynamic Systems Using Behavioral Modes

Most model-based diagnosis systems, such as GDE and Sherlock, have concerned discrete, static systems such as logic circuits and use simple constraint propagation to detect inconsistencies. However, sophisticated systems such as QSIM and QPE have been developed for qualitative modeling and simulation of continuous dynamic systems. We present an integration of these two lines of research as impl...