Tachometer for Low-Speed AC Generator
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United States of America Patent
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Issued Date -
Oct 17, 2013
app pub date -
Apr 16, 2012
filing date -
Apr 16, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A tachometer for a generator is disclosed. The tachometer may include a plurality of filters configured to receive a plurality of generator phase signals, a plurality of zero-cross detectors, and a logic circuit. The filters may be configured to convert each phase signal into a corresponding filtered signal. The zero-cross detectors may be configured to generate pulse signals responsive to zero-crossings detected in each filtered signal. The logic circuit may be in communication with each zero-cross detector and configured to receive the pulse signals. The logic circuit may logically combine the pulse signals into a combined signal, and generate a tachometer signal based on the combined signal, wherein the tachometer signal corresponds to a rotational speed of the generator.
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