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Reconfigurable control - fault-hiding approaches

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Abstract:
In this talk, the reconfigurable control problem with focus on actuator faults is introduced and solutions are described. In reconfigurable control, the control loop structure and the controller are autonomously and actively changed during closed-loop operation in order to respond to faults in the plant. A fault-hiding approach is presented that uses virtual actuators. In that approach, the controller of the fault-free plant remains part of the reconfigured closed-loop system. The virtual actuator is defined and its synthesis procedure is sketched for linear, Hammerstein-Wiener, and piecewise affine systems. It is shown how the stability and tracking properties of the nominal closed-loop system are recovered by means of suitable virtual actuator synthesis. An process control example closes the talk.

Type of Seminar:
Public Seminar
Speaker:
Jan Richter
Ruhr-Universität Bochum
Date/Time:
Nov 26, 2008   17:15 /
Location:

ETH Zentrum, Gloriastrasse 35, Building ETZ , Room E6
Contact Person:

Prof. Manfred Morari
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Biographical Sketch:
Jan Richter is a PhD candidate in the Institute of Automation and Computer Control at Ruhr-Universität Bochum, Germany. His research interests concern the development of active fault-tolerant control methods for special classes of nonlinear dynamical systems, the control of switched systems, and the physical modeling and control of thermofluid processes.