Method of judging zero point abnormality of steering angle sensor and judging device
AssigneeNissan Motor Co., Ltd.
InventorsYuta Okitsu, Shouta Hamane
Life of this patent
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Abstract
A method of judging an abnormality of a zero point of a steering angle sensor that outputs a steering angle according to a turning operation amount of a steering shaft with a straight-ahead state of a vehicle being the zero point, the method has, when the steering angle which is a threshold value or larger continues to be output until travelling with a vehicle speed of a predetermined speed or higher reaches a predetermined cumulative time, judging that the zero point has deviated.
Claims5
A method of judging an abnormality of a zero point of a steering angle sensor that outputs a steering angle according to a turning operation amount of a steering shaft with a straight-ahead state of a vehicle being the zero point, the method comprising:
- detecting that traveling with a vehicle speed of a predetermined speed or higher reaches a predetermined cumulative time,
- making a judgement, by a controller, that an output value of the steering angle is continuously a threshold value or larger for the predetermined cumulative time, and
- judging, by the controller, that the zero point has deviated responsive to the judgement, and
- outputting, by the controller, a notification upon judging that the zero point has deviated.
A judging device of a zero point abnormality of a steering angle sensor comprising:
- the steering angle sensor configured to output a steering angle according to a turning operation amount of a steering shaft with a straight-ahead state of a vehicle being a zero point;
- a vehicle speed detection unit configured to detect a vehicle speed;
- and
- a controller,
- wherein the controller is configured to, when the steering angle which is a threshold value or larger continues to be output until travelling with the vehicle speed of a predetermined speed or higher reaches a predetermined cumulative time, judge that the zero point has deviated.
Dependencies are inferred from the claim text.