Patent ID: 11904828
Assignee: ZF ACTIVE SAFETY US INC.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A stability control system of a vehicle utilizing an electronic control unit that minimizes rollback of a vehicle as a result of wheel slip immediately following a hill start assist operation, the stability control system comprising:
a plurality of wheel speed sensors measuring a speed of each wheel of the vehicle;
a sensor for calculating a slope of a road surface; and
an electronic control unit including an electronic braking control module, the electronic braking control module controlling actuation and de-actuation of vehicle brakes on an inclined surface, wherein immediately following the hill start assist operation on the inclined surface and after each wheel brake is de-actuated for allowing movement of the vehicle up the hill, a split-mu road surface condition is determined in response to wheel slip data for each of the wheels, wherein the electronic control unit determines a respective undriven or non-dominant driven wheel having a highest coefficient of friction, at a tire/road surface interface, among the undriven or non-dominant driven wheels as determined by the wheel speeds, wherein the electronic braking control module actuates the vehicle brake of the undriven or non-dominant driven wheel having the highest coefficient of friction for reducing rollback of the vehicle.