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STEER TORQUE MANAGER FOR AN ADVANCED DRIVER ASSISTANCE SYSTEM OF A ROAD VEHICLE

  • US 20180265120A1
  • Filed: 03/12/2018
  • Published: 09/20/2018
  • Est. Priority Date: 03/17/2017
  • Status: Active Grant
First Claim
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1. A steer torque manager for an advanced driver assistance system of a road vehicle having an electrical power assisted steering system, the steer torque manager comprising:

  • a driver-in-the-loop functionality for determining when and how to hand over control from the advanced driver assistance system to a driver; and

    a wheel angle controller for providing, from an advanced driver assistance system wheel angle request, an overlay torque request to be added to a torque request from the electrical power assisted steering;

    wherein the steer torque manager is configured to receive an assistance torque related signal and, when driver assistance is provided by the advanced driver assistance system, to feed forward and subtract from the overlay torque request provided by the wheel angle controller a feed forward signal scaled in a feed forward functionality to be a scaled version of the assistance torque related signal using a scale factor in the range from 0 to 1, the scale factor assuming a lower value if a measure of driver activity indicates a high driver activity and assuming a higher value if the measure of driver activity indicates a low driver activity that is less than the high driver activity.

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