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ACTIVE WHEEL DAMPING

  • US 20140005888A1
  • Filed: 06/27/2012
  • Published: 01/02/2014
  • Est. Priority Date: 06/27/2012
  • Status: Active Grant
First Claim
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1. A vehicle suspension for controlling motion of a sprung and unsprung mass comprising:

  • a force source which is capable of applying a force in response to a control signal and without a physical stimulus, the force source coupling a vehicle unsprung mass and a vehicle sprung mass;

    a sensor for detecting vertical motion of the sprung mass or a quantity from which vertical motion of the sprung mass can be derived;

    an unsprung mass sensor for detecting vertical motion of the unsprung mass or a quantity from which vertical motion of the unsprung mass can be derived; and

    control circuitry;

    responsive to the sprung mass sensor for determining a force to reduce the vertical motion of the sprung mass in a first frequency range; and

    responsive to the unsprung mass sensor for determining a force to reduce the vertical motion of the unsprung mass in a second frequency range;

    wherein the first frequency range includes frequencies above and below the second frequency range and wherein the first frequency range does not include the second frequency range.

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