Fault Diagnosis Methods in Dynamic Systems: A Review

Abstract

This paper reviews the contemporary approaches adopted for the diagnosis of faults in dynamic systems. It also takes into account the limitations of the age-old techniques like limit checking. The model-based methods of parameter estimation, parity space and other such approaches are discussed. The earlier methods, employed the age-old technique of monitoring the process variables like temperature, pressure, etc. and generated alarms. Generally, such an observation is possible only when the process has progressed in an advanced stage. This paper reviews the basic concepts starting from its infancy onto the mature facets involved in fault diagnosis.  there is a brief description of the rationale behind the study of fault diagnosis. Subsequent sections deal with the different areas of fault diagnosis. The conclusion gives a formal summary of the finer points discussed. The paper winds up with the citations enlisted in the reference section.