Vehicle control system using navigation system steering

Details Vehicle control system using navigation system steering Vehicle control system using navigation system steering

1998-08-03

1999-07-27

Zanelli, Michael

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle subsystem or accessory control

701 42, 701208, G06F 1900, G01C 2120

Patent

active

059282991

ABSTRACT:
An azimuth change quantity .theta. of a road during traveling of a vehicle for a time .delta.t is calculated based on road data provided by a navigation system and a vehicle speed provided by a vehicle speed sensor (at step S3 in FIG. 2). On the other hand, an azimuth change quantity .THETA. of the vehicle is calculated by integrating a yaw rate .gamma. obtained from a yaw rate sensor over the time .delta.t (at step S5). A deviation D between the azimuth change quantity .theta. of the road and the azimuth change quantity .THETA. of the vehicle is calculated (at step S6). When the deviation D becomes equal to or larger than a reference value .beta., it is determined that there is a possibility that the vehicle will depart from the road (at step S9), and a predetermined steering torque is applied to a steering device, so that the deviation is converged into zero (at steps S10 and S11).

REFERENCES:
patent: 5504482 (1996-04-01), Schreder
patent: 5563786 (1996-10-01), Torii
patent: 5588733 (1996-12-01), Gotou
patent: 5661650 (1997-08-01), Sekine et al.
patent: 5703780 (1997-12-01), Takanabe et al.

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