Motor vehicles – Steering gear – No mechanical connection between steering shaft and steering...
Reexamination Certificate
2011-07-05
2011-07-05
Winner, Tony H. (Department: 3611)
Motor vehicles
Steering gear
No mechanical connection between steering shaft and steering...
C701S042000
Reexamination Certificate
active
07971678
ABSTRACT:
In a vehicle steering device and control method, a selectively engageable clutch is positioned between a steering wheel and a turning mechanism for turning at least one wheel. The clutch has an engaged position where the steering wheel is mechanically connected to the turning mechanism and a disengaged position where the steering wheel is mechanically separated from the turning mechanism for steer-by-wire control. During steer-by-wire control, a reaction force actuator applies a force to the steering wheel, and a turning actuator applies a torque to the turning mechanism. To prevent erroneous clutch engagement caused by an increase in relative angular acceleration between the steering angle and the turning angle, a controller detects an operating condition corresponding to a risk of erroneous clutch engagement and controls at least one of the turning actuator and the reaction force actuator to reduce the relative angular acceleration.
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Kasahara Toshiaki
Katou Yuusuke
Mori Ken-ichi
Tsutsumi Junji
Knutson Jacob
Nissan Motor Co,. Ltd.
Winner Tony H.
Young & Basile
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