Journal article

Sensor and actuator placement trade-offs for a linear model of spatially developing flows

Stephan F Oehler, Simon J Illingworth

JOURNAL OF FLUID MECHANICS | CAMBRIDGE UNIV PRESS | Published : 2018

Abstract

We consider feedback flow control of the linearised complex Ginzburg-Landau system. The particular focus is on any trade-offs present when placing a single sensor and a single actuator. The work is presented in three parts. First, we consider the estimation problem in which a single sensor is used to estimate the entire flow field (without any control). Second, we consider the full information control problem in which the entire flow field is known, but only a single actuator is available for control. By considering the optimal sensor placement and optimal actuator placement while varying the stability of the system, a fundamental trade-off for both problems is made clear. Third, we consider..

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University of Melbourne Researchers