发明名称 |
Electronic correction for rotary transducer spin frequency noise |
摘要 |
A method of correcting the output of a rotary displacement transducer so as to remove spin frequency noise error. For each revolution of the transducer, a series of transducer output values is accumulated. Each output value represents a time interval between transducer pulses. These output values are used to calculate sin and cosine values of a sin wave and cosine wave having a period determined by the transducer resolution. From the sin and cosine waves, a quadrature and an inphase value are obtained, and the latter values are used to calculate magnitude and phase values of a correction sin wave having the same transducer periodicity. The magnitude and phase values are used to calculate a correction value for each transducer output value.
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申请公布号 |
US6415237(B1) |
申请公布日期 |
2002.07.02 |
申请号 |
US20000684527 |
申请日期 |
2000.10.06 |
申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
MOIZIO FRANK J.;SHOUSE JAMES C. |
分类号 |
G01D5/244;(IPC1-7):G06F19/00;G01D18/00 |
主分类号 |
G01D5/244 |
代理机构 |
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