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@INPROCEEDINGS{Seidler:841643,
      author       = {Seidler, Florian and Schiek, Michael and Silex, Wolfgang
                      and Heil, Roger and van Waasen, Stefan and Abel, Dirk},
      title        = {{S}ensors for waveform control in a {L}orentz force based
                      actuator system for turbulence research},
      reportid     = {FZJ-2017-08678},
      isbn         = {978-1-5386-4056-2},
      pages        = {963-965},
      year         = {2017},
      abstract     = {This work discusses the use of analog light barrier and
                      Hall sensors for waveform control in an actuator system for
                      turbulence research. The system shall produce up to 80 Hz,
                      80 mm wavelength running surface wave with amplitudes from
                      50 to 1000 μm. To ensure both, waveform and amplitude, the
                      control algorithm requires real time amplitude measurements
                      of all 20 actuators. Techniques are described to extend the
                      limited measurement range of analog light barriers and to
                      reduce impact of mechanical disturbances on the measurement
                      process by placement and compensation. Also a small bar
                      permanent magnet together with Hall sensors to track
                      position are employed and a method for reducing impact of
                      the strong magnetic stray fields affecting Hall sensors in
                      this actuator system is developed.},
      month         = {Oct},
      date          = {2017-10-29},
      organization  = {IEEE SENSORS, Glasgow (Scotland), 29
                       Oct 2017 - 1 Nov 2017},
      cin          = {ZEA-2},
      cid          = {I:(DE-Juel1)ZEA-2-20090406},
      pnm          = {113 - Methods and Concepts for Material Development
                      (POF3-113) / FOR 1779 - Aktive Widerstandsreduktion durch
                      wellenförmige Oberflächenoszillation (202175528)},
      pid          = {G:(DE-HGF)POF3-113 / G:(GEPRIS)202175528},
      typ          = {PUB:(DE-HGF)8 / PUB:(DE-HGF)7},
      url          = {https://juser.fz-juelich.de/record/841643},
}