Patent ID: 7966113

Claim:
A vehicle stability system for a vehicle, the system comprising; a yaw rate sensor configured to generate an output indicative of a yaw rate of the vehicle; an acceleration sensor configured to generate an output indicative of a lateral acceleration of the vehicle; a steering sensor configured to generate an output indicative of a steering angle; a torque request sensor configured to generate an output indicative of a driver's requested torque of the vehicle; and a controller configured to: calculate an oversteering indicator based on at least one of the outputs of the yaw rate sensor, the lateral acceleration sensor, the steering sensor, and the torque request sensor; calculate an understeering indicator based on at least one of the outputs of the yaw rate sensor, the lateral acceleration sensor, the steering sensor, and the torque request sensor; determine a need to modulate the driver's requested torque based on an instability indicator determined by the oversteering indicator, the understeering indicator, and feedback calculations; calculate a tracking error by comparing a target stability indicator and the instability indicator; generate a wheel specific modulated torque signal, based on the tracking error and a feed forward calculation; and transmit the modulated torque signal to at least one differential of the vehicle.