Optimal actuator placement for large scale systems: a reduced-order modelling approach.
A recently developed, extended balanced realization, reduced order modelling technique for large-scale distributed systems is applied to the problem of optimal actuator placement for hyperthermia treatments. Extended balanced realization develops low-order models whose state reconstructions are robust to actuator and sensor placement changes, and hence can be effectively used to find optimal placements in a computationally efficient manner. This optimization approach has been tested on simulations of a scanned focused, ultrasound hyperthermia system and found to be robust and accurate over a wide range of models, and the savings in computational costs were found to be significant.
Mechanical Engineering Department, University of Utah, Salt Lake City 84112, USA.
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M
Mattingly
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Roemer
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Devasia
D004867:Equipment Design; D006979:Hyperthermia, Induced / Q000295:instrumentation*; D008962:Models, Theoretical