锑化铟磁阻式接近开关特性分析

Analysis for Characteristics of InSb Magneto-resistive Proximity Switch

介绍了锑化铟磁阻式接近开关的结构及工作原理,设计了信号处理电路,并对接近开关的动态特性进行了测试和分析。实验表明:该接近开关具有良好的动态特性,径向间距为4 mm时,接近开关动作距离为8.13 mm,回差距离和重复定位精度分别不大于0.06 mm和0.04 mm.该接近开关灵敏度高,稳定性好,结构简单,成本低,可以规模化生产,用于铁磁性材料检测和控制。

The construction and the working principle of InSb magnetoresistive proximity switch were introduced. The signal processing circuit was designed, and dynamic characteristics of the proximity switch were tested and analyzed. The experiment shows that the proximity switch has favorable dynamic characteristics. Its action-distance is 8. 13 mm when the radial-distance is 4 mm. The hysteresis-distance and the repeating location accuracy are no more than 0.06 mm and 0. 04 mm respectively. The proxim- ity switch has high sensitivity, fine stability and low cost. Its construction is simple, can be mass produced for ferromagnetic material detecting and controlling.