Please download the dossier by clicking on the dossier button x
×

Method, apparatus and article for vibration compensation in electric drivetrains

  • US 20050253543A1
  • Filed: 03/30/2005
  • Published: 11/17/2005
  • Est. Priority Date: 03/30/2004
  • Status: Active Grant
First Claim
Patent Images

1. A method of vibration compensation, the method comprising:

  • applying a hardware limitation to a torque command to produce a torque request;

    converting the torque request to a torque current value;

    determining a peak of vibration;

    applying an adaptation degree value to the torque current value to produce a torque current request value wherein the adaptation degree value is based at least in part on the determined peak of vibration;

    applying an electrical limitation to the torque current request value to produce a torque current reference value;

    subtracting a torque current peak compensation value from the torque current reference value, wherein the torque current peak compensation value is based at least in part on the determined peak of vibration;

    subtracting a torque current compensation value from the results of the subtraction of the torque current peak compensation value from the torque current reference value to produce an adjusted torque current reference value;

    pulse width modulating the adjusted torque current reference value to produce pulse width modulated signals; and

    providing the pulse width modulated signals to drive a power converter.

View all claims
  • 5 Assignments
Timeline View
Assignment View
    ×
    ×