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@ARTICLE{Dck:202906,
      author       = {Dück, Marcel and Schlösser, Mario and van Waasen, Stefan
                      and Schiek, Michael},
      title        = {{E}thernet based time synchronization for {R}aspberry {P}i
                      network improving network model verification for distributed
                      active turbulent flow control},
      journal      = {Control theory and technology},
      volume       = {13},
      number       = {2},
      issn         = {2198-0942},
      address      = {Cham},
      publisher    = {Springer},
      reportid     = {FZJ-2015-05052},
      pages        = {204 - 210},
      year         = {2015},
      abstract     = {Friction drag primarily determines the total drag of
                      transport systems. A promising approach to reduce drag at
                      high Reynolds numbers (> 104) are active transversal surface
                      waves in combination with passive methods like a riblet
                      surface. For the application in transportation systems with
                      large surfaces such as airplanes, ships or trains, a large
                      scale distributed real-time actuator and sensor network is
                      required. This network is responsible for providing
                      connections between a global flow control and distributed
                      actuators and sensors. For the development of this network
                      we established at first a small scale network model based on
                      Simulink and TrueTime. To determine timescales for network
                      events on different package sizes we set up a Raspberry Pi
                      based testbed as a physical representation of our first
                      model. These timescales are reduced to time differences
                      between the deterministic network events to verify the
                      behavior of our model. Experimental results were improved by
                      synchronizing the testbed with sufficient precision. With
                      this approach we assure a link between the large scale model
                      and the later constructed microcontroller based real-time
                      actuator and sensor network for distributed active turbulent
                      flow control.},
      cin          = {ZEA-2},
      ddc          = {620},
      cid          = {I:(DE-Juel1)ZEA-2-20090406},
      pnm          = {112 - Energy Efficient Processes (POF3-112)},
      pid          = {G:(DE-HGF)POF3-112},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.1007/s11768-015-4143-1},
      url          = {https://juser.fz-juelich.de/record/202906},
}