[Faculty] Fwd: [CSRC-SDSU COLLOQUIUM]: Optimal actuator and sensor placement for feedback flow control

[Jose Castillo]

*DATE*:  Friday, September 23rd, 2016

*TITLE*: Optimal actuator and sensor placement for feedback flow control

*TIME*:  3:30 PM

*LOCATION*:  GMCS 314

*SPEAKER*:  Dr. Kevin K. Chen. Research staff member at the Institute for
Defense Analyses' Center for Communications Research in La Jolla.

*ABSTRACT*:   Feedback control has an enormous potential to manipulate
fluid flows in desirable ways, and may one day increase vehicle performance
and efficiency significantly.  One fundamental question has remained
unanswered, however: where should the feedback system's actuators and
sensors be located in the flow?  The state of the art is shockingly
insufficient; the vast majority of studies use trial and error, or
otherwise flawed heuristics.  In this seminar, we explore why some actuator
and sensor placements are more effective than others.  Specifically, we
examine the optimal control of the Ginzburg-Landau and
Orr-Sommerfeld/Squire equations, using localized actuators and sensors.  We
implement a novel algorithm that efficiently iterates toward optimal
placements in these fluid flow models.  The control theoretical and
physical interpretations of the optimal placements yield a set of
heuristics that can help engineers predict effective actuator and sensor
placements.

*HOST*:  Dr. Guus Jacobs

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SDSU Computational Science Research Center
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Jose E. Castillo  Ph.D.

Director / Professor

Computational Science Research Center

5500 Campanile Dr

San Diego State University

San Diego CA 92182-1245

619 5947205/3430, Fax 619-594-2459

 http://www.csrc.sdsu.edu/mimetic-book/
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