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US 12,748,125 B2Granted
Rotational speed estimation method for incremental encoder
AssigneeArtery Technology Co., Ltd.
InventorsMing-Tsan Lin, Yi-Shiang Ouyang, Zi-Xuan Huang
Life of this patent
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Abstract
A rotational speed estimation method for an incremental encoder includes generating a plurality of pulse signals according to a plurality of square waves, detecting a time duration when the pulse signals reach a predetermined amount, and generating a rotational speed of a disc according to the predetermined amount, the time duration, and the total number of pulses corresponding to one rotation of the disc of the incremental encoder.
Claims10
A rotational speed estimation method for an incremental encoder, comprising:
- generating a plurality of pulse signals according to a plurality of square waves;
- detecting a time duration for the plurality of pulse signals to reach a predetermined number;
- and
- generating a rotational speed of the incremental encoder according to the predetermined number, the time duration, and a total pulse number generated by one rotation of a disc of the incremental encoder;
- wherein generating the plurality of pulse signals according to the square waves comprises:
- generating the plurality of pulse signals according to a first square wave and a second square wave, the second square wave having a same period as the first square wave, and a phase difference between the second square wave and the first square wave being 90 degrees;
- and
- when a level of one of the first square wave and the second square wave changes. outputting a pulse signal.
5 more elements
A rotational speed estimation method for an incremental encoder, comprising:
- generating a plurality of pulse signals according to a plurality of square waves;
- detecting a plurality of time durations for the plurality of pulse signals to reach a predetermined number;
- and
- generating a rotational speed of the incremental encoder according to the predetermined number, a sum of the time durations, and a total pulse number generated by one rotation of a disc of the incremental encoder;
- wherein generating the plurality of pulse signals according to the square waves comprises:
- generating the plurality of pulse signals according to a first square wave and a second square wave, the second square wave having a same period as the first square wave, and a phase difference between the second square wave and the first square wave being 90 degrees;
- and
- when a level of one of the first square wave and the second square wave changes, outputting a pulse signal.
5 more elements
Dependencies are inferred from the claim text.