---
res:
  bibo_abstract:
  - This  paper  gives  a  review  of  research  activities  at  the  Institute  for  Power  Electronics  and  ElectricalDrives
    in Paderborn to the control of rotary travelling wave type ultrasonic motors.
    Based on a special designedhardware environment an advanced control scheme for
    inverter-fed travelling wave type ultrasonic motors is pre-sented. After several
    modelling steps, including an averaged model for the controller design, a speed
    control schemeis implemented on a prototype drive. It is realized as an outer
    control loop of an underlaid voltage and travellingbending wave vector controller.
    The novel speed control is using an inverse contact model by a neural network,
    inorder  to  compensate  the  nonlinear  torque  generation  of  the  motor.  The  so  equipped  ultrasonic  motor-drive  meetsrequirements  for  applications  in  the  field  of  servo-drives  e.g.  robotics.  Since  the  reference  values  of  the  bendingwave
    control are calculated from the desired torque value by the neural network, open
    loop control of the drive´s torque is feasible, too. @eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Jürgen
      foaf_name: Maas, Jürgen
      foaf_surname: Maas
      foaf_workInfoHomepage: http://www.librecat.org/personId=1827
  - foaf_Person:
      foaf_givenName: Thomas
      foaf_name: Schulte, Thomas
      foaf_surname: Schulte
      foaf_workInfoHomepage: http://www.librecat.org/personId=46242
  - foaf_Person:
      foaf_givenName: H.
      foaf_name: Grotstollen, H.
      foaf_surname: Grotstollen
  - foaf_Person:
      foaf_givenName: Norbert
      foaf_name: Fröhleke, Norbert
      foaf_surname: Fröhleke
  dct_date: 1999^xs_gYear
  dct_language: eng
  dct_title: Model-Based Control of Travelling Wave Type Ultrasonic Motors.@
...