Chapter 6Diagnosis of Systems withMultiple Operating Modes 1
The COSMOS (design and observation of systems with multiple safe operating modes) and DICOP (diagnosis of power converters: application to railway transport) projects of GIS 3SGS have involved four academic partners (CRAN1, CReSTIC2, LAGIS3 and LAMIH4). These projects come within the general theme of the “dependability of complex systems”. The goals were to develop tools and methods for the observation and fault diagnosis (fault detection, isolation and estimation) of systems characterized by several operating modes. These collaborative projects have enabled significant advances in this area of research. This chapter presents a few of the results obtained within this framework.
6.1. Introduction
Several dynamic systems, such as those found in the areas of power electronics, nuclear energy, aerospace or robotics, are considered complex systems due to their physical configuration, involving interactions between several components with nonlinear behaviors.
The dependability of these systems is a major challenge that researchers and industrialists attempt to address by developing adapted and high-performance tools for monitoring, observation and diagnosis. These tools aim to improve the safety of individuals and equipment, and to increase the availability and profitability of facilities.
System monitoring consists of a procedure aiming to detect any system behaviors that differ from the normal ones. Generally, monitoring ...
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