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DRIVE DEVICE FOR USE IN A LABORATORY DEVICE

  • US 20110243793A1
  • Filed: 04/05/2011
  • Published: 10/06/2011
  • Est. Priority Date: 04/06/2010
  • Status: Active Grant
First Claim
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1. :

  • A drive device for use in a laboratory device, havinga motor with rotor and stator, and havinga motor controller, arranged for controlling the motor, wherein the drive device comprises;

    position acquisition means, which in operation supplies in each case a current signal, which indicates the current rotor position of the rotor,phase terminals, to tap the currently flowing motor phase currents on the motor side, andwherein the motor controller comprises;

    a transformation module, to decompose the currently flowing motor phase currents into a slip component and a torque component using a transformation method,a slip regulation module, to which the slip component and a first target value are provided as input variables,a torque regulation module, to which the torque component (iy) and a second target value are provided as input variables,wherein the slip regulation module and the torque regulation module predefine the rotor phase currents for commutation of the motor so that the difference between the slip component and the first target value and the difference between the torque component and the second target value are minimal.

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