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Antivibration apparatus and vehicle equipped with such antivibration apparatus

  • US 20040222755A1
  • Filed: 05/08/2003
  • Published: 11/11/2004
  • Est. Priority Date: 05/08/2003
  • Status: Abandoned Application
First Claim
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1. An antivibration apparatus for limiting vibrations of a vibrating element excited by at least a rotary assembly having a rotation frequency, said antivibration device including an active mass vibration absorber controlled by a controlling apparatus, said active mass vibration absorber including a support which is designed to be fixed to the vibrating element, a mass and an electromagnetic actuator adapted to move said mass relative to said support as a function of a control signal received from said controlling apparatus, said controlling apparatus including:

  • a sensor apparatus adapted to detect positions of the rotary assembly during rotation thereof, and a controller adapted to;

    extract a filtered signal including at least one harmonic of said rotation frequency, from an input signal which is received from said sensor apparatus, determine a phase shift and an amplification as predetermined functions of said rotation frequency, and determine said control signal by applying said phase shift and amplification to said filtered signal.

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