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US 8,442,720 B2Granted
Integrated vehicle control system using dynamically determined vehicle conditions
AssigneeFord Global Technologies, LLC
InventorsJianbo Lu, Jeffrey Rupp
Life of this patent
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Abstract
A vehicle includes a control system that is used to control a vehicle system. The control system determines a roll condition in response to a yaw rate sensor and a pitch rate sensor without having to use a roll rate sensor. A relative roll angle, relative pitch angle, global roll angle, and global pitch angle may also be determined. A safety system may be controlled in response to the roll condition, roll angle, or the pitch angles individually or in combination.
Claims27
A method of controlling a system in a vehicle having a controller to carry Out operations comprising:
- determining a lateral acceleration;
- determining a moment due to lateral tire threes in response to the lateral acceleration;
- determining a first coefficient related to vehicle mass and spring, roll rate;
- determining a second coefficient related to vehicle spring rate and roll inertia;
- determining a normalized vertical suspension force induced roll moment using the first coefficient, the second coefficient and the moment due to lateral tire forces in response to the lateral acceleration;
- determining a relative roll angle in response to the normalized vertical suspension force induced roll moment;
- and
- controlling the system in response to the relative roll angle.
5 more elements
Dependencies are inferred from the claim text.