Steering system and method for autonomous vehicles
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United States of America Patent
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Nov 22, 2016
Grant Date -
Oct 20, 2016
app pub date -
Apr 15, 2015
filing date -
Apr 15, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A steering system for an autonomous vehicle includes a steering mechanism having a pinion gear and a rack, the steering mechanism being configured to translate rotation of the pinion gear into movement of the rack which is configured to affect the position of a steer tire of the autonomous vehicle, thereby affecting the lateral position of the autonomous vehicle; a steering wheel which provides a mechanical input to the pinion gear from an operator of the autonomous vehicle; a steering actuator which rotates to apply torque to the steering mechanism, thereby inducing movement of the rack which affects the position of the steer tire of the autonomous vehicle; and a variable coupling member operatively between the steering actuator and the steering mechanism which is configured to vary the torque that can be transmitted from the steering actuator to the steering mechanism.
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