Abnormal condition determining system for steering angle sensor
First Claim
1. An abnormal condition determining system for a steering angle sensor of a vehicle comprising:
- a first means for detecting whether the vehicle has passed through a curved road, based on geographical data and position data from a navigation system; and
a second means for determining an abnormal condition of the steering angle sensor, when an output change of the steering angle sensor does not reach a predetermined amount in spite that the first means detects that the vehicle has passed through the curved road.
1 Assignment
0 Petitions
Accused Products
Abstract
A purpose of the invention is to determine abnormal condition of a steering angle sensor at an early stage even in a vehicle, in which a yaw-rate sensor is not provided. An abnormal condition determining system of the invention has a first means for detecting whether the vehicle has passed through a curved road, based on geographical data and position data from a navigation system. The system further has a second means for determining an abnormal condition of the steering angle sensor, when an output change of the steering angle sensor does not reach a predetermined amount in spite that the first means detects that the vehicle has passed through the curved road.
-
Citations
21 Claims
-
1. An abnormal condition determining system for a steering angle sensor of a vehicle comprising:
-
a first means for detecting whether the vehicle has passed through a curved road, based on geographical data and position data from a navigation system; and a second means for determining an abnormal condition of the steering angle sensor, when an output change of the steering angle sensor does not reach a predetermined amount in spite that the first means detects that the vehicle has passed through the curved road. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An abnormal condition determining system for a steering angle sensor of a vehicle comprising:
-
a first means for detecting that a vehicle running track has plotted a curved line, based on position data from a navigation system; and a second means for determining an abnormal condition of the steering angle sensor, when an output change of the steering angle sensor does not reach a predetermined amount in spite that the first means detects that the vehicle running track has plotted the curved line.
-
-
12. An abnormal condition determining system for a steering angle sensor of a vehicle comprising:
-
a first means for automatically setting a determination period during which it is determined whether an output of the steering angle sensor is in a normal condition or not, wherein a starting time point and an ending time point of the determination period are automatically set when at least one of conditions for an vehicle operation and a vehicle running condition satisfies a predetermined condition; and a second means for determining an abnormal condition of the steering angle sensor, when an output change of the steering angle sensor during the above determination period does not reach a predetermined amount. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. An abnormal condition determining system for a vehicle which has an anti-lock braking system, according to which a vehicle wheel lock is prevented during a braking operation by controlling braking pressure based on information for rotational speed of respective vehicle wheels, comprising:
-
a first means for calculating a difference of wheel speeds between right and left vehicle wheels, based on the information for rotational speed of respective vehicle wheels; and a second means for determining an abnormal condition of the steering angle sensor, when an output change of the steering angle sensor does not reach a predetermined amount in spite that the difference of wheel speeds between right and left vehicle wheels calculated by the first means is larger than that of the vehicle running on a straight road.
-
Specification