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Fault-tolerant Control

Suppose some fault occurs in an aircraft or in a chemical process plant. It suddenly starts to behave in an unanticipated manner. Can the aircraft still be flown, or the plant continue being operated? The existing control systems may be able to cope, but if the change in behaviour is large, then the control system may need to be modified, so that it handles the modified behaviour. We consider the problem of fault-tolerant control in the face of unanticipated faults, so that the solution cannot be pre-programmed. We will describe an approach based on the use of Model Predictive Control (MPC), combined with model updates. We will argue that MPC has several featurs which make it particularly suitable as an underlying framework for fault-tolerant control. The talk will mostly discuss specific examples. In particular, the 1992 Boeing 747 freighter crash in Amsterdam will be treated in some detail. Fault-tolerance is a "grand challenge" problem for control. While there is a very long way to go, we hope to demonstrate its feasibility.
Type of Seminar:
Public Seminar
Dr. J.M. Maciejowski
University of Cambridge, England
Jun 24, 2004   17:15

ETH Zentrum, ETZ E6
Contact Person:

Prof. M. Morari
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Biographical Sketch:
Jan Maciejowski is a Reader in Control Engineering in the Department of Engineering at the University of Cambridge, and currently Head of the Control Group. He graduated from Sussex University in 1971 with a B.Sc degree in Automatic Control, and from Cambridge University in 1978 with a Ph.D degree in Control Engineering. From 1971 to 1974 he was a Systems Engineer with Marconi Space and Defence Systems Ltd, working mostly on attitude control of spacecraft and high-altitude balloon platforms. He is currently the President of the European Union Control Association, and in 2002 he was President of the Institute of Measurement and Control. His book "Multivariable Feedback Design", published by Addison-Wesley in 1989, received the IFAC Control Engineering Textbook Prize in 1996. In 2001 he published "Predictive Control with Constraints" (Prentice-Hall). His current research interests are in predictive control, its application to fault-tolerant control and to high-level control problems, and in system identification using `subspace methods' (of linear and bilinear systems).