Abstract
Diagnosis and, when possible, prognosis of faults are essential for safe and reliable
operation. The area of fault diagnosis has emerged over three decades. The majority of studies
related to linear systems but real-life systems are complex and nonlinear. The development
of methodologies coping with complex and nonlinear systems have matured and even though
there are many un-solved problems, methodology and associated tools have become available
in the form of theory and software for design. Genuine industrial cases have also become
available. Analysis of system topology, referred to as structural analysis, has proven to be
unique and simple in use and a recent extension to active structural techniques have made fault
isolation possible in a wide range of systems. Following residual generation using these topologybased
methods, deterministic and statistical change detection has proven very useful for on-line
prognosis and diagnosis. For complex systems, results from non-Gaussian detection theory have
been employed with convincing results. The paper presents the theoretical foundation for design
methodologies that now appear as enabling technology for a new area of design of systems that
are reliable in practise. Yet they are also affordable due to the use of fault-tolerant philosophies
and tools that make engineering efforts minimal for their implementation. The paper includes
examples for an autonomous aircraft and a baling system for agriculture.
Original language | English |
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Title of host publication | Proceedings Volume from the Special International Conference on Complex Systems |
Publication date | 2011 |
Pages | 89-101 |
Publication status | Published - 2011 |
Event | Special International Conference on Complex Systems : Synergy of Control, Communications and Computing - Ohrid, Republic of Macedonia Duration: 1 Jan 2011 → … |
Conference
Conference | Special International Conference on Complex Systems : Synergy of Control, Communications and Computing |
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City | Ohrid, Republic of Macedonia |
Period | 01/01/2011 → … |
Keywords
- Fault diagnosis
- Change Detection
- Fault-tolerant Control
- Complex Systems