Patent ID: 6438463
Filing Date: 2002-08-20
Classification: B60G,B60R,B60T

Abstract:
A process for determining the lateral overturning of a vehicle, comprising the steps of: establishing a threshold value line on a two-dimensional map made using a rolling angle and a rolling angular speed of the vehicle as parameters;plotting a hysteresis line for an actual rolling angle and an actual rolling angular speed on said two-dimensional map; and determining that there is a possibility that the vehicle is overturning laterally or sideways when the hysteresis line traverses the threshold value line from a side nearer to an origin of the map to a side farther from the origin; said threshold value line being changed depending on at least one of a lateral acceleration of the vehicle, a lateral speed of the vehicle, a direction of change in steering angle of the vehicle, and a rolling angular acceleration of the vehicle.