Patent ID: 8548722

Claim:
A method for determining the tilt of a vehicle, the method comprising: measuring a first acceleration level associated with a first axis of the vehicle; measuring a second acceleration level associated with a second axis of the vehicle that is generally perpendicular to the first axis, the second axis generally aligned with or coincident with a vertical axis of the vehicle; determining, by a processor, an arcsine-derived tilt based on an arcsine equation and the determined first acceleration level; determining, by a processor, an arc-cosine-derived tilt based on an arccosine equation and the determined second acceleration level; selecting, by a processor, the arcsine-derived tilt as the final tilt of the vehicle if the determined arc sine-derived tilt is lesser than the determined arccosine derived tilt such that the final tilt compensates for vertical acceleration associated with changes in the slope terrain in the direction of travel of the vehicle; and selecting, by a processor, the arccosine-derived tilt as the final tilt of the vehicle if the determined arcsine-derived tilt is not lesser than the determined arccosine derived tilt such that the final tilt compensates for lateral acceleration changes of the vehicle.