Magnetic drum material for high-resolution magnetic rotary encoders
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摘要: 采用磁漿涂布工藝制作了磁鼓涂層材料.研究了不同組分的配方對磁鼓涂層材料性能的影響,制備出性能良好的磁鼓.對φ32-40mm的磁鼓進行了充磁測試,寫入了128和256對極.采用金屬薄膜磁電阻傳感探頭檢測磁鼓表面分布磁場,信號通過電路放大、整形后接入示波器和計數器,結果顯示輸出信號波形良好,計數完整.Abstract: Magnetic drum coating material was prepared by using the magnetic slurry inunction process and the influence of component on the property of coating material was investigated. A high-performance magnetic drum whose diameter is 30-40 mm was ultimately manufactured with this material. The magnetic drum was magnetized and recorded 128 and 256 magnetic poles. A metal film magnetoresistance transducer was used to detect the distributing magnetic field of the drum surface and the signal was transformed to an oscillograph and an arithmometer by a magnifying and plastic circuit. It is shown that the output signal waveform is fine and the count is integrated.
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