Sensing method and system for correcting an input waveform from a coded wheel
AssigneeInfineon Technologies AG
InventorsSimon Hainz, Dirk Hammerschmidt, Ernst Katzmaier
Life of this patent
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Abstract
A sensing system and method for correcting an input waveform from a coded wheel. The coded wheel is configured to generate a signal that varies with rotation of the coded wheel relative to a sensor. The sensor is configured to sense the varying signal and output a corresponding input waveform. A correction module is configured to receive the input waveform and compare the input waveform to at least one stored waveform and to correct the input waveform if a defect is detected in the coded wheel in response to the comparison.
Claims21
A method of sensing rotation, comprising:
- rotating a coded wheel to generate an input signal that varies with rotation of the coded wheel relative to a sensor;
- generating with the sensor a present input waveform representative of the input signal;
- comparing the present input waveform to at least one stored waveform representative of rotation of the coded wheel;
- detecting an anomaly in the present input waveform representative of a defect in the coded wheel based on the comparison;
- and
- correcting the detected anomaly in the present input waveform to provide a corrected input waveform in response to detecting an anomaly representative of a defect in the coded wheel.
A sensing system, comprising:
- a coded wheel configured to generate a signal that varies with rotation of the coded wheel;
- a sensor configured to sense the varying signal and to generate a corresponding input waveform;
- a correction module configured to receive the input waveform generated by the sensor, to compare the input waveform to at least one stored waveform, to detect a defect in the coded wheel in response to the comparison, and to correct the input waveform in response to detecting a defect to provide a corrected input waveform.
Dependencies are inferred from the claim text.