US 11,702,133 B2
Yaw stability control system for a motor vehicle
Insu Chang, Troy, MI (US); Jun-mo Kang, Ann Arbor, MI (US); and SeungHwan Keum, Northville, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on Apr. 21, 2021, as Appl. No. 17/236,422.
Prior Publication US 2022/0340198 A1, Oct. 27, 2022
Int. Cl. B62D 5/04 (2006.01); B60W 30/18 (2012.01); B60K 26/04 (2006.01); G06F 17/00 (2019.01); B62D 3/02 (2006.01); B62D 6/00 (2006.01); B62D 15/02 (2006.01); B60R 11/04 (2006.01)
CPC B62D 6/003 (2013.01) [B60R 11/04 (2013.01); B62D 5/0481 (2013.01); B62D 6/008 (2013.01); B62D 15/021 (2013.01); B60R 2300/804 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A yaw stability control system for a motor vehicle having a plurality of wheels and a longitudinal centerline, the yaw stability control system comprising:
at least one camera adapted to be mounted to the motor vehicle and directed along the longitudinal centerline of the motor vehicle, with the at least one camera generating a video signal in response to the at least one camera capturing at least one lane marking associated with a boundary of a driving lane;
a plurality of wheel speed sensors for generating a plurality of speed signals that correspond to a speed of an associated one of the wheels;
a yaw angle sensor for generating a yaw signal that corresponds to a current yaw angle of the motor vehicle;
a steering angle sensor for generating a steering signal that corresponds to a steering angle;
a reaction wheel having a moment of inertia and adapted to mount to the motor vehicle for angularly rotating within a horizontal plane;
an electric motor connected to the reaction wheel for angularly rotating the reaction wheel;
a processor coupled to the at least one camera, the wheel speed sensors, the yaw angle sensor, the steering angle sensor, and the electric motor; and
a memory including instructions such that the processor is programmed to:
determine a desired yaw angle of the motor vehicle based on the video signal, the speed signals, the yaw signal, and the steering signal; and
generate an actuation signal associated with the desired yaw angle;
wherein the electric motor angularly rotates the reaction wheel at a predetermined angular rate in a predetermined rotational direction to produce a counter-acting torque that rotates the motor vehicle to the desired yaw angle, in response to the electric motor receiving the actuation signal from the processor; and
wherein the reaction wheel comprises one of a ring and a solid disc.