US 11,865,891 B2
Method and system for active roll control
Robert G. Izak, Dryden, MI (US); Nojan Medinei, Toronto (CA); Larry G. Gepfrey, Fenton, MI (US); and Bo Yu, Novi, MI (US)
Assigned to GM Global Technology Operations LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Oct. 30, 2020, as Appl. No. 17/085,637.
Prior Publication US 2022/0134835 A1, May 5, 2022
Int. Cl. B60G 21/055 (2006.01)
CPC B60G 21/0553 (2013.01) [B60G 2400/104 (2013.01); B60G 2400/204 (2013.01); B60G 2400/25 (2013.01); B60G 2400/40 (2013.01); B60G 2400/80 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A system for active roll control, comprising:
two wheels including a left wheel and a right wheel;
a vehicle body of a vehicle;
a sensor operable to monitor a tilt of the vehicle body;
a vehicle suspension system operable to support the vehicle body above the two wheels and including:
an active sway bar operable to transmit a force from a first side of the vehicle suspension system to a second side of the vehicle suspension system in order to provide control over the tilt of the vehicle body, including:
a first bar portion;
a second bar portion; and
an active roll control motor disposed between the first bar portion and the second bar portion, wherein the active roll control motor is operable to turn the first bar portion in relation to the second bar portion; and
a computerized active roll control controller, operative to:
monitor a driving mode including one of straight-line driving and rounding a curve on a road;
monitor an output of the sensor;
determine a desired roll moment based upon the driving mode and the output of the sensor; and
control the active roll control motor based upon the desired roll moment,
wherein, when the driving mode includes the straight-line driving, controlling the active roll control motor includes turning the first bar portion in relation to the second bar portion to adjust body roll accelerations that result from side-to-side road surface irregularities.