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US 5,203,420 AGranted
Auxiliary steering mechanism for automotive vehicles
AssigneeNissan Motor Co., Ltd.
InventorYasuhiro Shiraishi
Life of this patent
Estimating the term…
Abstract
A working neutral steering position of an auxiliary steering mechanism is checked for deviation from a true neutral position. When a deviation is present it is corrected to correspond to the actual neutral position of the steering wheel, at a controlled rate.
Claims8
An auxiliary steering control system for an automotive vehicle comprising:
- sensing means for sensing rotational motion of a steering wheel of a vehicle and producing a neutral position signal indicating a neutral position of the steering wheel and an angular position signal indicating an angular displacement of the steering wheel from said neutral position;
- a controller comprising means for determining a working neutral position value, mean for determining a steering wheel angle from the angular position signal with respect to the working neutral position value, means for determining an actual neutral position value in response to the neutral position signal, means for changing the working neutral position value in a stepwise manner toward the actual neutral position value by fixed increments at regular time intervals, means for determining an auxiliary steer angle in accordance with the steering wheel angle, and means for producing a control signal indicating the auxiliary steer angle;
- and
- an auxiliary steering device for steering a wheel of the vehicle in response to the control signal.
1 more element
A steering sensor for an automotive vehicle comprising:
- sensing means for sensing rotational motion of a steering wheel and producing a neutral position signal indicating a neutral position of the steering wheel;
- means for determining a working neutral position value of the steering wheel;
- means for determining an actual neutral position value in response to the neutral position signal;
- and
- means for changing the working neutral position value in a stepwise manner toward the actual neutral position value by a plurality of fixed increments at regular time intervals when the neutral position signal is produced.
2 more elements
Dependencies are inferred from the claim text.