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METHOD AND APPARATUS FOR CONTROLLING A SEMI-ACTIVE SUSPENSION SYSTEM FOR MOTORCYCLES

  • US 20110153158A1
  • Filed: 08/06/2009
  • Published: 06/23/2011
  • Est. Priority Date: 08/06/2008
  • Status: Active Grant
First Claim
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1. Method for controlling a semi-active suspension system for a motorcycle, said method jointly controlling front and rear suspensions, wherein said front suspension comprises a front controllable force generator (2) provided between a suspended mass (M5) and a front non-suspended mass (men) and said rear suspension comprises a rear controllable force generator (3) provided between said suspended mass (Ms) and a rear non-suspended mass (mru), said method comprising the following steps:

  • a. determining a first signal (Vbf) corresponding to the relative velocity between said suspended mass (Ms) and said front non-suspended mass (mfu);

    b. determining a second signal (Vbr) corresponding to the relative velocity between said suspended mass (Ms) and said rear non-suspended mass (mru);

    c. determining a third signal (Vp) corresponding to the pitch angular velocity of the pitch motion of said suspended mass (Ms);

    d. determining the front force (Fid) to be generated by said front controllable force generator (2) on the basis of a first function (Ff) of said first signal (Vbf) and said third signal (Vp), wherein said first function (Ff) defines a three-dimensional control surface and wherein said front force (Fid) to be generated is proportional to said first function (Ff);

    e. determining the rear force (F2d) to be generated by said rear controllable force generator (3) on the basis of a second function (Fr) of said second signal (Vbr) and said third signal (Vp), wherein said second function (Fr) defines a three-dimensional control surface and wherein said rear force (F2d) to be generated is proportional to said second function (Fr).

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