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磁栅是用以测量长度和角度位移的元件。磁栅位置检测系统具有精度高、稳定性好的特点，是现代控制系统中一种重要的位置测量方法。
Magnetic grid is used to measure the length and angular displacement of the components. Magnetic grid position detection system with high precision and good stability characteristics, is an important modern control system position measurement method.