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首页> 外文会议>Thirtieth Annual Symposium on Incremental Motion Control Systems amp; Devices, Jul 23-26, 2001, Berkeley, California >LINEAR ELECTRIC ENCODER
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LINEAR ELECTRIC ENCODER

机译：线性电编码器

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摘要

The Linear Electric Encoder is the linear member of the novel Electric Position Sensing technology, which also includes angular displacement encoders. It is comprised of a scale and a read-head that interact capacitively. The scale is a printed circuit strip on which a periodic pattern field transmitter is printed. The read-head is also a printed circuit substrate on which a conductive receiver pattern is printed. A typical read-head has a profile of 6mm including the processing electronics, and provides two outputs that are sinusoidal functions of the measured displacement. The interaction area between the read-head and scale is typically 25mm by 60mm, resulting in the averaging of multiple transmitter periods. The outputs of the Linear Electric Encoder have a very low DC offset, low harmonic distortion, perfect amplitude matching, and high temperature stability, they can thus be digitized to provide submicron resolution and accuracy of 10 microns and better. Its long period provides several advantages, such as virtually no tradeoff between speed and resolution, and output signals of low frequencies, which are less prone to parasitic phase shifts and to PWM noise.
机译：线性电子编码器是新型电子位置传感技术的线性成员，该技术还包括角位移编码器。它由一个秤和一个电容相互作用的读取头组成。标尺是印刷电路板，上面印有周期性图案场发送器。读取头还是印刷有导电接收器图案的印刷电路基板。典型的读取头（包括处理电子设备）的轮廓为6mm，并提供两个输出，它们是所测位移的正弦函数。读取头和刻度尺之间的相互作用区域通常为25mm x 60mm，从而导致多个发射器周期的平均。线性电编码器的输出具有非常低的直流偏移，低谐波失真，完美的幅度匹配和高温稳定性，因此可以数字化以提供亚微米分辨率和10微米甚至更高的精度。它的长周期提供了几个优势，例如速度和分辨率之间几乎没有权衡，低频输出信号则不易产生寄生相移和PWM噪声。

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