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METHOD AND CONTROLLER FOR CONTROLLING OUTPUT TORQUE OF A PROPULSION UNIT

  • US 20120101705A1
  • Filed: 07/05/2010
  • Published: 04/26/2012
  • Est. Priority Date: 07/07/2009
  • Status: Active Grant
First Claim
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1. Method for controlling output torque (Teng) of a propulsion unit in a vehicle powertrain comprising driven wheels drivingly connected to said propulsion unit via a mechanical transmission with a drive shaft, characterized in that, said method comprising the steps of:

  • registering driver torque demand (Td) for vehicle propulsion;

    registering propulsion unit rotational speed (ω

    e);

    controlling said output torque (Teng) of said propulsion unit to asymptotically follow said driver torque demand (Td) using a closed-loop linear-quadratic regulator (LQR) based controller (9) having said driver torque demand (Td) and said propulsion unit rotational speed (ω

    e) as input data, in order to minimize driveline oscillations.

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