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| | A Magnetic Rotary Encode with two phases output has been Studied. The properties of this device are: output voltage, Vp-p≈41mV (Vcc = 5V), the sensitivity is 6.3μV/(A·m-1), the resolution is 400 P.P.R. There is a optimal gap has been proved by experiment when the gap between the magnetic drum and magnetoreistant sensor is 1mm, the output Voltage is maximum. | | 本文介绍的两相输出磁性旋转编码器输出电压V_(p-p)=41mV(V_(cc)=5V),灵敏度为6.3μV/(A·m~(-1)),分辨率为400p/r.实验证明,磁鼓与磁阻传感器之间存在最佳间隙,当间距为1mm时,输出最大. | | 文摘来源 | | The mechanism of the magnetic rotary encoder and the working process of the magneto re- sistance readout head are analyzed in detail. By means of the differential amplifier application and the magneto resistance films selection with high magneto resistance ratio, a magneto resistance head with low temperature coefficient and high signal-noise ratio is developed. The head for magnetic rotary en- coder is manufactured by using semiconductor process. The magnetic rotary encoder has the proper- ties such as sim... | | 分析了磁性旋转编码器的工作原理,对磁阻磁头的工作过程作了详细分析.通过差动放大输出及选择高性能磁阻薄膜材料,设计了温度系数小、信噪比高的磁阻磁头.采用半导体工艺制备了磁性旋转编码器磁阻磁头.该磁性旋转编码器具有结构简单、紧凑,响应速度快,抗环境污染能力强和功耗低等优点,可广泛应用于伺服马达、数控机床等. | | 文摘来源 | |   |
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