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Details of Grant 

EPSRC Reference: GR/S70876/01
Title: Robust Fault Detection & Isolation Using Sliding Mode Observers
Principal Investigator: Edwards, Professor C
Other Investigators:
Researcher Co-Investigators:
Project Partners:
Department: Engineering
Organisation: University of Leicester
Scheme: Standard Research (Pre-FEC)
Starts: 24 September 2004 Ends: 23 September 2007 Value (£): 194,106
EPSRC Research Topic Classifications:
Control Engineering Safety & Reliability of Plant
EPSRC Industrial Sector Classifications:
Aerospace, Defence and Marine Transport Systems and Vehicles
Related Grants:
Panel History:  
Summary on Grant Application Form
The fundamental purpose of a fault detection and isolation FDI scheme is to generate an 'alarm' when a fault occurs in the system being monitored and to pinpoint the source. As levels of plant automation increase and as the drive for improved levels of safety and productivity is intensified, fault detection and isolation is becoming an increasingly important area of research. Furthermore the proliferation of fly-by-wire systems in aircraft, and the increasing implementation of steer-by-wire and brake-by-wire technology in the automotive industry makes this research timely.This research is concerned with the development of novel theoretically rigorous methods for fault detection and isolation, based on sliding mode principles, which may be applied to nonlinear complex and uncertain processes. The research will focus on the use of sliding mode observers, which employ both linear and discontinuous output error feedback to force the output of the observer to exactly follow the measured system outputs. By appropriately scaling and filtering the 'equivalent output error injection' signal (the average behaviour the nonlinear output error injection term must supply to maintain a sliding motion) , reconstruction of actuator and sensor faults can be achieved in the system being monitored.The proposed research is fundamental in nature and would potentially be applicable to many real control domains. For this reason the research is not directed to a single application. However one important potential application area is aerospace systems. For this reason the project will take advantage of a GARTEUR (Group for Aeronautical Research and Technology in Europe) Action Group on Fault Tolerant Control, which includes Leicester University, and starts in 2003. One of the main objectives of this action group is to demonstrate the capabilities of modern FDI (and reconfiguration) methods applied to realistic, nonlinear design problems and to assess their contribution to flight safety. This will provide an unparalleled opportunity for comparing the sliding mode based FDI schemes with other techniques designed by other research groups.
Key Findings
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Organisation Website: http://www.le.ac.uk