Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Indication or control of braking – acceleration – or deceleration
Reexamination Certificate
2008-07-08
2008-07-08
Beaulieu, Yonel (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Indication or control of braking, acceleration, or deceleration
C701S073000
Reexamination Certificate
active
07398145
ABSTRACT:
A grip factor estimating apparatus includes a steering torque detecting unit M1, and an assist torque detecting unit M2. When a self-aligning torque estimating unit M6estimates self-aligning torque generated in front wheels on the basis of detection result of the detecting unit, the quantity of influence of longitudinal force on self-aligning torque is removed on the basis of longitudinal force acting on the front wheels and estimated by a longitudinal force estimating unit M15and a front wheel slip angle estimated by a front wheel slip angle estimating unit M9y. A grip factor estimating unit M12estimates the grip factor of the front wheels on the basis of change in self-aligning torque in accordance with the side force.
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Aizawa Hiroaki
Imoto Yuzo
Kato Hiroaki
Momiyama Minekazu
Muragishi Yuji
Advics Co., Ltd.
Beaulieu Yonel
JTEKT Corporation
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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