Vehicle motion control apparatus
AssigneeNissan Motor Co., Ltd.
InventorsHideki Sudo, Kazutaka Adachi, Ken Ito
Life of this patent
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Abstract
An apparatus for controlling a motion of a vehicle supported on steered and non-steered road wheels. A target vehicle motion value is calculated based on the steering angle and vehicle speed to provide a predetermined response characteristic related to a vehicle plane behavior. A target steering angle value for the non-steered road wheel to realize the vehicle plane behavior is calculated according to the target vehicle motion value. The non-steered road wheels are steered according to the calculated target steering angle value. The damping characteristic of the response characteristic is decreased as the vehicle speed increases.
Claims8
An apparatus for controlling a motion of a vehicle supported on steered and non-steered road wheels, comprising:
- means for sensing vehicle operating conditions including steering angle and vehicle speed;
- means for calculating a target vehicle motion value based on the sensed steering angle and vehicle speed to provide a predetermined response characteristic related to a vehicle plane behavior, the response characteristic having a damping characteristic;
- means for calculating a target steering angle value for the non-steered road wheel to realize the vehicle plane behavior according to the target vehicle motion value;
- means for steering the non-steered road wheels according to the calculated target steering angle value;
- and
- means for decreasing the damping characteristic as the sensed vehicle speed increases.
An apparatus for controlling a motion of a vehicle supported on steered and non-steered road wheels, comprising:
- means for sensing steering angle;
- means for sensing vehicle speed;
- means for calculating a target vehicle motion value based on the sensed steering angle and vehicle speed to provide a predetermined vehicle plane behavior related response characteristic realized by a transfer function between the sensed steering angle and the target vehicle motion value, the transfer function having a damping coefficient;
- means for calculating a target steering angle value for the non-steered road wheel to realize the vehicle plane behavior according to the target vehicle motion value;
- means for steering the non-steered road wheels according to the calculated target steering angle value;
- and
- means for decreasing the damping coefficient as the sensed vehicle speed increases.
An apparatus for controlling a motion of a vehicle supported on steered and non-steered road wheels, comprising:
- detectors for sensing vehicle operating conditions including steering angle and vehicle speed;
- means for calculating a target vehicle motion value based on the sensed steering angle and vehicle speed to provide a predetermined response characteristic related to a vehicle plane behavior, the response characteristic having a damping characteristic;
- means for calculating a target steering angle value for the non-steered road wheel to realize the vehicle plane behavior according to the target vehicle motion value;
- means for steering the non-steered road wheels according to the calculated target steering angle value;
- and
- means for decreasing the damping characteristic as the sensed vehicle speed increases.
An apparatus for controlling a motion of a vehicle supported on steered and non-steered road wheels, comprising:
- a first detector for sensing steering angle;
- a second detector for sensing vehicle speed;
- means for calculating a target vehicle motion value based on the sensed steering angle and vehicle speed to provide a predetermined vehicle plane behavior related response characteristic realized by a transfer function between the sensed steering angle and the target vehicle motion value, the transfer function having a damping coefficient;
- means for calculating a target steering angle value for the non-steered road wheel to realize the vehicle plane behavior according to the target vehicle motion value;
- means for steering the non-steered road wheels according to the calculated target steering angle value;
- and
- means for decreasing the damping coefficient as the sensed vehicle speed increases.
Dependencies are inferred from the claim text.