Vehicle suspension control system and method

摘要

A suspension control system for use in a vehicle with four corner suspensions comprising: a first sensor for monitoring vehicle speed (18); a second sensor for monitoring steering wheel angle (19); a third sensor at each corner suspension providing an output from which relative velocity of the corner suspension is determined (13'); and a computer controller comprising: (a) a lateral acceleration rate of change detector (172) responsive to the vehicle speed and the steering wheel velocity to determine a signal indicative of a transient turning maneuver of the vehicle; (b) a corner direction command generator (206) responsive to the signal and the steering wheel angle, determining compression damping commands for two of the corner suspensions on a first side of the vehicle that tends to have suspension compression during the transient turning maneuver and determining rebound damping commands for two of the corner suspensions on a second side of the vehicle that tends to have suspension rebound during the transient turning maneuver; and (c) an apply command generator (210) responsive to the corner direction command generator and the corner relative velocities and applying the compression damping commands for the two corner suspensions on the first side of the vehicle when the relative velocities for those two corner suspensions indicate that they are in compression and terminating the compression damping commands for the two corner suspensions on the first side of the vehicle when the relative velocities for those two corner suspensions indicate that they are in rebound and applying the rebound damping commands for the two corner suspensions on the second side of the vehicle when the relative velocities for those two corner suspensions indicate that they are in rebound and terminating the rebound damping commands for the two corner suspensions on the second side of the vehicle when the relative velocities for those two corner suspensions indicate that they are in compression.