旋转位置传感器

Abstract

The invention provides a rotary position sensor having a transmitter coil excited by a high frequency signal source. A first and second receiver coil, each having at least two oppositely wound loops, are rotatably positioned electrically 90 degrees relative to each other. The receiver coils are positioned so as to be inductively coupled with the transmitter coil while a coupler constructed of an electrically conductive material is rotatably positioned over and inductively coupled with the first and second receiver coils. The outputs from the first and second receiver coils are coupled through a high pass filter and a low pass filter, respectively, thus creating a 90 DEG phase shift in the resultant signals. These signals are summed together and coupled as an input signal to a PWM circuit together with a signal from the transmitter coil.
本发明提供一种旋转位置传感器,其具有由高频信号源激励的发射器线圈。将第一和第二接收器线圈相对于彼此电性90度可旋转地定位,每个接收器线圈具有至少两个相反绕制的回环。接收器线圈被定位成使得其与发射器线圈感应式耦合,同时由导电材料构成的耦合器被可旋转地定位在第一和第二接收器上方并与其感应式耦合。第一和第二接收器线圈的输出分别通过高通滤波器和低通滤波器耦合,因此在合成信号中产生90°的相移。这些信号被相加到一起并与来自发射器线圈的信号耦合在一起作为PWM电路的输入信号。

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NO-Patent Citations (1)

    Title
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