Delphi Technologies, Inc.

Albert Victor Fratini

David Andrew Shal

Scott Wilson Badenoch

Karen Marie Connair

David John Barta

Eldon Gerrald Leaphart

Raymond Kurt Schubert

Olivier Valee

Chinh Trong Nguyen

Olivier Raynauld

Alexander Apostolos

Harold David Hamilton

Darin Duane Delinger

A method, system and computer readable medium storing a computer program is provided for independent control of a variable force damper system. The variable force damper system can be applied to control a vehicle suspension system. The system provides individual wheel control independent of vehicle body forces. In operation, at least one relative velocity signal and at least one body demand force is received. At least one body damper command is determined based on the body demand force. At least one wheel motion indicating parameter is determined based on the relative velocity signal. At least one wheel damper command is determined based on the wheel motion indicating parameter and a damper command is determined based on the larger of the body damper command and the wheel damper command.

Method and system for independent control of a variable force damper system

A method of determining a vehicle steering wheel angle by receiving at least one steering sensor output from at least one steering sensor. The method then receives a vehicle speed signal. A centered steering angle is determined based on the received vehicle speed signal and the steering sensor output.

Method of determining a vehicle steering wheel angle

A vehicle suspension control includes a vehicle body control responsive to body/wheel velocity at the corners of the vehicle body to derive a demand force command for dampers at each corner of the vehicle body for vehicle body control and applies each of the derived demand force commands to its respective damper only 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. But the suspension control also includes a vehicle stability control responsive to an indicated vehicle lateral acceleration in a turn to determine, independently of the vehicle body control, a stability compression damping command for the suspension dampers on the side of the vehicle opposite the direction of the lateral acceleration and a stability rebound damping command for the suspension dampers on the side of the vehicle in the direction of the lateral acceleration. While the lateral acceleration is sensed, the vehicle stability control applies the stability compression damping command to the suspension dampers on the side of the vehicle opposite the direction of the lateral acceleration and the stability rebound damping command to the suspension dampers on the side of the vehicle in the direction of the lateral acceleration, without regard for the direction of demand force for any of the suspension dampers. The resulting stiffening of the suspension on the outside of the turning vehicle in compression and on the inside of the turning vehicle during rebound helps keep the tires of the vehicle firmly in contact with the road surface in spite of road surface irregularities.

Vehicle suspension control with stability in turn enhancement

A vehicle suspension system is responsive to an active brake signal from a brake system indicating the application of a greater braking force to one front corner brake than to the other front corner brake to affect vehicle yaw rate. The vehicle suspension system determines the relative velocities of the front corner suspension adjacent the front corner brake receiving the greater braking force and the diagonally opposed rear corner suspension and further determines a compression damping command for the front corner suspension and a rebound damping command for the rear corner suspension. While the active brake signal is present, the suspension control applies the compression damping command for the front corner suspension when its relative velocity indicates that it is in compression. While the active brake signal is present, the suspension control also applies the rebound damping command for the rear corner suspension when its relative indicates that it is in rebound.

Vehicle suspension control with compensation for yaw correcting active brake control

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Evanston, IL, United States of America

Albert Victor Fratini