VEHICLE STEERING DEVICE, AUTOMOBILE AND VEHICLE STEERING METHOD

VEHICLE STEERING DEVICE, AUTOMOBILE AND VEHICLE STEERING METHOD

PROBLEM TO BE SOLVED: To determine that a vehicle is in an under steer state in a short time when the vehicle becomes in the under steer state. SOLUTION: When the difference between a time differential value of a reference yaw rate and the time differential value of an actual yaw rate is larger than...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: TAMAMASA TADATSUGU, MIURA MASAHIRO
Format: Patent
Sprache:eng
Schlagworte:
LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MOTOR VEHICLES
PERFORMING OPERATIONS
TRAILERS
TRANSPORTING
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To determine that a vehicle is in an under steer state in a short time when the vehicle becomes in the under steer state. SOLUTION: When the difference between a time differential value of a reference yaw rate and the time differential value of an actual yaw rate is larger than a first threshold value, it is determined that the vehicle is in the under steer state. Since the vehicle is determined that it is in the under steer state based on a state amount where response with respect to the steering by a driver is faster compared to the degree of increasing tendency of a yaw rate, namely, the yaw rate, the vehicle can be determined that it is in the under steer state in a short time, when a tire is saturated by an excessive steering of the driver and the vehicle becomes in the under steer state. COPYRIGHT: (C)2008,JPO&INPIT