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Vehicle suspension control with stability in turn enhancement

  • US 6,219,602 B1
  • Filed: 03/27/2000
  • Issued: 04/17/2001
  • Est. Priority Date: 04/01/1999
  • Status: Expired due to Fees
First Claim
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1. A method of controlling suspension dampers at the four corners of the body of a motor vehicle having steering apparatus and further having a wheel coupled to each of the suspension dampers, the method comprising the steps:

  • determining a relative velocity of each of the suspension dampers and deriving from the determined relative velocities a demand force command for each of the dampers;

    applying each of the derived demand force commands to its respective damper if and only if when a comparison of the direction of the demand force command with the sensed relative velocity of the damper indicates that a force corresponding to the demand force command can be effectively exerted by the damper;

    sensing a vehicle lateral acceleration indicating parameter;

    responsive to the sensed vehicle lateral acceleration indicating parameter, determining a stability compression damping command for the suspension dampers on the side of the vehicle opposite the direction of indicated vehicle lateral acceleration and a stability rebound damping command for the suspension dampers on the side of the vehicle in the direction of indicated vehicle lateral acceleration;

    while the vehicle lateral acceleration indicating parameter is sensed, applying the stability compression damping command to the suspension dampers on the side of the vehicle opposite the direction of indicated vehicle lateral acceleration and the stability rebound damping command to the suspension dampers on the side of the vehicle in the direction of indicated vehicle lateral acceleration, without regard for the direction of demand force for any of the suspension dampers.

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