Vehicle wheel rotation detecting system and method
First Claim
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1. A vehicle wheel rotation detecting system, comprising:
- a rotating member that rotates together with a vehicle wheel;
a detected portion, that is provided in the rotating member;
a first detector that generates a signal in response to a passage of the detected portion; and
a second detector that detects a rotating direction of the vehicle wheel in accordance with an output of the first detector, the rotating direction being adapted to be used by an on-board system;
wherein when a rotating speed of the vehicle wheel is equal to or greater than a predetermined value, a change in an output of the rotating direction is inhibited.
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Abstract
In a vehicle wheel rotation detecting system, a signal input portion of an ECU accurately detects a vehicle wheel speed and a rotating direction of the vehicle wheel speed of the respective wheels. On the basis of the detected results, the respective computers are operated to perform ABS control, TC control and VSC control. When a computing result of the vehicle wheel speed is equal to or greater than a predetermined value, a change in the rotating direction is inhibited. This may prevent an error in the result of detection of the wheel rotating direction owing to an external magnetic filed and the like so as to further optimize the vehicle state control.
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Citations
9 Claims
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1. A vehicle wheel rotation detecting system, comprising:
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a rotating member that rotates together with a vehicle wheel;
a detected portion, that is provided in the rotating member;
a first detector that generates a signal in response to a passage of the detected portion; and
a second detector that detects a rotating direction of the vehicle wheel in accordance with an output of the first detector, the rotating direction being adapted to be used by an on-board system;
whereinwhen a rotating speed of the vehicle wheel is equal to or greater than a predetermined value, a change in an output of the rotating direction is inhibited. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A vehicle wheel rotation detecting method comprising the steps of:
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obtaining information of a rotating direction of a vehicle wheel on the basis of a signal generated by a detector in response to a passage of a detected portion, the detected portion mounted on a rotating member that rotates together with the vehicle wheel; and
calculating a rotating speed of the vehicle wheel on the basis of the detected signal;
whereinwhen the rotating speed is equal to or greater than a predetermined value, a change in an output of the rotating direction is made invalid, and a previously detected rotating direction is maintained. - View Dependent Claims (8, 9)
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Specification