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US 2015/0177274 A1Published application
Pretreatment apparatus and method of wheel speed
AssigneeHyundai Autron Co., Ltd.
InventorsTae-Hun KIM, Seung-Hwan SHIN, Byung-Koo CHOI, Young-Taek CHO
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Abstract
An apparatus for pretreating a wheel speed includes a tone wheel having a plurality of teeth, a hall sensor configured to detect a measurement angle including an offset of each of the teeth, an offset correcting unit configured to correct the measurement angle with a corrective offset when disturbance is generated and a frequency estimating unit configured to estimate a frequency based on a result value calculated from the offset correcting unit.
Claims4
An apparatus for pretreating a wheel speed, comprising:
- a tone wheel including a plurality of teeth;
- a hall sensor configured to detect a measurement angle including an offset of each of said teeth;
- an offset correcting unit configured to correct said measurement angle with a corrective offset when disturbance is generated;
- and
- a frequency estimating unit configured to estimate a frequency based on a result value calculated from said offset correcting unit.
2 more elements
A method of pretreating a wheel speed, comprising the steps of:
- (a) detecting teeth of a tone wheel by using a hall sensor, and obtaining a measurement angle including an offset of each of said teeth;
- (b) calculating a corrective offset when disturbance is generated;
- (c) correcting said measurement angle by using said calculated corrective offset;
- and
- (d) estimating a frequency based on a result value calculated in step (c).
2 more elements
Dependencies are inferred from the claim text.