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Control device for a wheel suspension system

  • US 8,086,371 B2
  • Filed: 03/25/2009
  • Issued: 12/27/2011
  • Est. Priority Date: 03/26/2008
  • Status: Active Grant
First Claim
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1. A control device for controlling a variable element of a wheel suspension system, comprising:

  • a variable suspension element having a variable property interposed between each wheel and an associated part of a vehicle body;

    a sensor provided in a part of a vehicle body part adjacent to each wheel for detecting a corresponding dynamic state variable of the vehicle body;

    a control unit for controlling the variable suspension element associated with one of the wheels at least according to an output of the sensor associated with a different one of the wheels; and

    a base value computing unit that computes a target damping force base value and a correction value computing unit that computes a correction value for a vehicle part corresponding to one of the wheels according to a difference between a vertical speed of the vehicle part corresponding to the one wheel and a vertical speed of the vehicle part corresponding to a different one of the wheels, a target damping force for the vehicle part corresponding to the one wheel being determined from the target damping force base value and the correction value,wherein the dynamic state variable comprises a vertical movement variable of a vehicle body part associated with each wheel, and the control unit controls the variable suspension element in such a manner that a difference between the vertical movement variable of the vehicle body part associated with one of the wheels and the vertical movement variable of the vehicle body part associated with a different one of the wheels may be minimized, andwherein the variable suspension element provides a variable damping force.

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