The Principle of Magnetic Encoder！

Magnetic encoder, also known as magnetic feet, is the use of magnetic principles to detect the amount of linear displacement encoder, and output the corresponding pulse wave number method, briefly described as follows:

A long strip of rubber magnets are magnetized into an NS magnetic field arranged alternately, and a magnetoresistive element composed of a magnetoresistive element which changes in resistance with the strength of the magnetic field is horizontally moved on the NS pole, The two voltage waveforms of Sin and Cos are measured, and then the displacement of the magnetoresistive sensor on the NS magnetic field is analyzed by the method of fine segmentation. Assuming that the intensities of the NS magnetic fields are similar and the spacing is the same, The device moves horizontally above the poles. The structure of the magnetoresistive sensor is divided into two sets by eight magnetoresistance spaced by 1/4 NS. In the Mr1, Mr2 and Mr3, Mr4 can be detected at the junction of Sin voltage waveform, the same principle in Mr1 ', Mr2' and Mr3 ', Mr4' can be detected at the junction of the Cos voltage waveform

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