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Method and apparatus for determining slew rate limits and controlling dampers in a suspension system

  • US 6,633,803 B1
  • Filed: 09/13/2000
  • Issued: 10/14/2003
  • Est. Priority Date: 09/13/2000
  • Status: Expired due to Fees
First Claim
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1. A method of controlling dampers in a suspension system for a vehicle body, comprising:

  • deriving a heave velocity of a vehicle body from sensed dynamic variables of the vehicle body;

    low pass filtering a magnitude of the heave velocity value with a first low pass filter coefficient while the magnitude is increasing and with a second low pass filter coefficient while the magnitude is not increasing;

    deriving a slew rate limit from the low pass filtered magnitude of the heave velocity;

    generating a damping control command for at least one of the dampers in accordance with the slew rate limit; and

    applying the damping control command to the one of the dampers.

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