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1. 发明授权

US4467320A Measurement of a linear variable differential transformer signal by phase conversion 失效
标题翻译：通过相位转换测量线性可变差动变压器信号
公开(公告)号：US4467320A
公开(公告)日：1984-08-21
申请号：US375516
申请日：1982-05-06
申请人： Walter J. McPhee
发明人： Walter J. McPhee
IPC分类号： G01D5/22 , G01D5/245 , H03M1/00 , H03K13/00
CPC分类号： G01D5/2291 , H03M1/50 , H03M1/645
摘要： A measurement system for converting the outputs of dissimilar transducers into digital numbers by means of a phase conversion technique. The outputs of a plurality of dissimilar transducers are generated as pairs of amplitude modulated sinusoidal signals. All AM signal pairs are converted into phase modulated signal pairs by a plurality of identical conversion circuits where the phase difference between at least one PM signal pair is linearly related to the measured parameter of the transducer associated therewith. The phase differences for each transducer is converted into a digital number by counting increments of time between the zero crossings of each pair of phase modulated signals and outputting the resulting count to a data buss of a control processor. Transducer parameters which are nonlinearly related to their phase differences are compensated by a correction factor which is calculated by knowing the error between any particular measured input and the linear input.
摘要翻译：一种用于通过相位转换技术将不同换能器的输出转换为数字数字的测量系统。多个不同的换能器的输出被产生成一对调幅正弦信号。通过多个相同的转换电路将所有AM信号对转换成相位调制信号对，其中至少一个PM信号对之间的相位差与与之相关的换能器的测量参数线性相关。通过计数每对相位调制信号的过零点之间的时间增量，将每个换能器的相位差转换为数字数字，并将结果计数输出到控制处理器的数据总线。与其相位差非线性相关的传感器参数通过校正因子进行补偿，校正因子通过了解任何特定测量输入和线性输入之间的误差来计算。

2. 发明授权

US3984068A Vehicle guidance system using angular rate of change 失效
标题翻译：车辆导向系统采用角速率变化
公开(公告)号：US3984068A
公开(公告)日：1976-10-05
申请号：US284192
申请日：1972-08-28
申请人： Walter J. McPhee
发明人： Walter J. McPhee
IPC分类号： F41G7/22 , F01B15/02
CPC分类号： F41G7/22
摘要： In a vehicle guidance system, a method for computing the true rate of change of the angle between the line of sight to the target and the gyro reference. Two antennas are spaced apart a distance upon the vehicle. The outputs of both antennas are converted to a subcarrier frequency. One of the antenna outputs is then converted to a linear voltage by means of a phase detector and, subsequently, combined with the gyro reference voltage. By means of a high gain control loop and a voltage control oscillator, a combined sinusoid signal is given with both the carrier frequency and the gyro reference. In the high gain control loop, appropriate scaling factors and frequency division and multiplication must be used to eliminate repeating values of phase in excess of 360.degree.. Now, by modulating the combined signal with the signal received from the other antenna, the carrier frequency can be eliminated. By further differentiation and multiplication, and the combining of the results thereof, a true rate of change of the angle between the gyro reference and the line of sight to the target can be obtained.
摘要翻译：在车辆引导系统中，用于计算视线与目标之间的角度与陀螺仪参考的真实变化率的方法。两个天线在车辆间隔一段距离。两个天线的输出被转换成副载波频率。然后通过相位检测器将天线输出之一转换成线性电压，并随后与陀螺参考电压组合。通过高增益控制回路和电压控制振荡器，组合的正弦信号同时具有载波频率和陀螺仪参考。在高增益控制环路中，必须使用适当的比例因子和分频和乘法，以消除超过360°的重复相位值。现在，通过利用从另一个天线接收的信号调制组合信号，可以消除载波频率。通过进一步的微分和乘法以及其结果的组合，可以获得陀螺仪参考与目标线之间的角度的真实变化率。

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