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1. 发明授权

US5170365A Propeller speed and phase sensor 失效
标题翻译：螺旋桨速度和相位传感器
公开(公告)号：US5170365A
公开(公告)日：1992-12-08
申请号：US675066
申请日：1991-03-26
申请人： Paul D. Collopy , George W. Bennett
发明人： Paul D. Collopy , George W. Bennett
IPC分类号： B64C11/50 , G01P3/489 , G01P3/56
CPC分类号： G01P3/56 , B64C11/50 , G01P3/489
摘要： A speed and phase sensor counterrotates aircraft propellers. A toothed wheel is attached to each propeller, and the teeth trigger a sensor as they pass, producing a sequence of signals. From the sequence of signals, rotational speed of each propeller is computer based on time intervals between successive signals. The speed can be computed several times during one revolution, thus giving speed information which is highly up-to-date. Given that spacing between teeth may not be uniform, the signals produced may be nonuniform in time. Error coefficients are derived to correct for nonuniformities in the resulting signals, thus allowing accurate speed to be computed despite the spacing nonuniformities. Phase can be viewed as the relative rotational position of one propeller with respect to the other, but measured at a fixed time. Phase is computed from the signals.
摘要翻译：速度和相位传感器反击飞机螺旋桨。齿轮连接到每个螺旋桨上，齿通过时触发传感器，产生一系列信号。根据信号序列，每个螺旋桨的转速是基于连续信号之间的时间间隔的计算机。速度可以在一圈内计算好几次，从而提供高度最新的速度信息。假定齿之间的间距可能不均匀，所产生的信号可能在时间上是不均匀的。导出误差系数以校正所得到的信号中的不均匀性，从而允许精确的速度被计算，尽管间隔不均匀性。相位可以视为一个螺旋桨相对于另一个螺旋桨的相对旋转位置，但是在固定时间测量。相位根据信号计算。

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