System and method for detection of spun vehicle
AssigneeGM Global Technology Operations LLC
InventorDaniel S. Maitlen
Life of this patent
Estimating the term…
Abstract
A system, method and computer program product is provided for detecting if a vehicle has spun. A normal force and a lateral force of each of a front and rear axle of a vehicle is estimated. A coefficient of friction representative of a surface is estimated. Lateral momenta of the front and rear axles based on the coefficient of friction and the normal and lateral forces is calculated. Whether a surplus momentum is present, is determined. If the surplus momentum is present, a yaw rate of the vehicle is integrated respect to time to obtain a vehicle rotation estimation.
Claims21
A computer-implemented method, comprising:
- estimating a normal force and a lateral force of each of a front and rear axle of a vehicle;
- estimating a tire-surface coefficient of friction;
- calculating lateral momenta of the front and rear axles based on the coefficient of friction and the normal and lateral forces;
- determining whether a surplus momentum is present;
- and
- when the surplus momentum is present, integrating a yaw rate of the vehicle with respect to time to obtain a vehicle rotation estimation.
A system for determining whether a vehicle is spun, comprising:
- a processor having a plurality of sensors configured to receive a plurality of dynamic parameters of a vehicle, the processor configured to:
- estimate a normal force and a lateral force of each of a front and rear axle of a vehicle,
- estimate a tire-surface coefficient of friction,
- calculate lateral momenta of the front and rear axles based on the coefficient of friction and the normal and lateral forces,
- determine whether a surplus momentum is present, and
- when the surplus momentum is present, integrate a yaw rate of the vehicle with respect to time to obtain a vehicle rotation estimation.
A computer program product for determining if a vehicle is spun, the computer program product comprising a computer-readable storage medium having computer-readable program code portions stored therein, the computer-readable program code portions comprising:
- a first executable portion for estimating a normal force and a lateral force of each of a front and rear axle of a vehicle;
- a second executable portion for estimating a tire-surface coefficient of friction;
- a third executable portion for calculating lateral momenta of the front and rear axles based on the coefficient of friction and the normal and lateral forces;
- a fourth executable portion for determining whether a surplus momentum is present;
- and
- a fifth executable portion for, when the surplus momentum is present, integrating a yaw rate of the vehicle with respect to time to obtain a vehicle rotation estimation.
Dependencies are inferred from the claim text.