Electromagnetic Induction Measuring System of incremental encoder！

Electromagnetic induction measurement system is an electromagnetic component, which is the most widely used induction scale. According to its structure can also be divided into a linear and disc and other two types. Linear encoder electromagnetic induction measurement system, which is fixed by the scale line and can be composed of the scale of the line. Scale line is coated in the metal body with an insulating binder, and then by similar processing printed circuit printed copper or nickel alloy, etc., to form a linear extension of the winding induction coil, the line spacing of 2mm, foot length up to 1m. The movable scale shall also be made into two sets of induction coils of the same pattern, with a spacing of 1/4 line spacing.
Electromagnetic induction measurement system works is due to induction feet on a certain frequency AC (excitation current), when the two induction coil is this overlap, will produce the most inductive coupling (Inductivecoupling). As a result, the AC current on the induction is induced to the movable coil via the carrier frequency to produce the maximum AC signal (induced current). On the contrary, the movable coil and the fixed induction coil between the difference of 1/2 coil spacing, there will be no induced current. The amplitude changes of the two groups of induced voltages correspond to the changes in the phase angle of the sine and cosine waveforms, which can be digitally output after processing.
Disc electromagnetic induction measurement system, which is fixed by the disk and rotating disk and other two parts, the fixed coil of its scale coil will produce sinusoidal and cosine waveforms are composed of a rotating disk by a continuous coil group line. Measuring principle and production methods and linear electromagnetic induction measurement system the same.

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