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METHOD FOR ATTENUATING SMOOTH ROAD SHAKE IN AN ELECTRIC POWER STEERING SYSTEM

  • US 20110071729A1
  • Filed: 09/23/2009
  • Published: 03/24/2011
  • Est. Priority Date: 09/23/2009
  • Status: Active Grant
First Claim
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1. A method for attenuating smooth road shake at a steering wheel of a steering column of a motor vehicle having an electric power steering system including an electric motor and a rack, comprising the steps of:

  • determining a frequency range of the smooth road shake during predetermined driving conditions of the motor vehicle; and

    mechanically tuning an electric power steering motor assembly of the motor vehicle electric power steering system to a predetermined frequency to thereby provide a tuned vibration absorber having a mechanically tuned resonance frequency substantially proximate the frequency range of the smooth road shake.

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