Method for recording and removing the bipolar bias from a vibration input signal
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United States of America Patent
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Apr 8, 2003
Grant Date -
Jul 18, 2002
app pub date -
Jan 12, 2001
filing date -
Jan 12, 2001
priority date (Note) -
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Abstract
A method for recording and removing the bipolar bias from a vibration input signal. The signal is a time varying signal where the bipolar bias has an amplitude which is many times greater than the amplitude of the time varying waveform of the signal that represents the vibration of the machine. In calculating the level of the bipolar bias the method approaches a predetermined dead band asymptotically and in stable manner. The determination of the bipolar bias level occurs when the next event has occurred and the time for that determination is much shorter than the time between occurrence of the events.
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