The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Aug. 20, 2002

Filed:

Sep. 06, 2000
Applicant:
Inventors:

Shigeo Tobaru, Wako, JP;

Hiroyuki Maeda, Wako, JP;

Osamu Takahata, Wako, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05D 1/00 ; B60R 2/510 ; B60G 1/701 ;
U.S. Cl.
CPC ...
G05D 1/00 ; B60R 2/510 ; B60G 1/701 ;
Abstract

A process for determining the lateral overturning of a vehicle, comprises 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 the 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. The threshold value line is 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.


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