High-precision absolute value magnetic encoder and signal processing method thereof

The invention discloses a high-precision absolute value magnetic encoder and a signal processing method thereof, and the absolute value magnetic encoder comprises a vernier magnetic code disc, an increment magnetic code disc, a Hall magnetic encoder chip, an AMR sensor chip, a subdivision chip and a single-chip microcomputer. Outputting an absolute angle position signal; the AMR sensor chip is used for sensing a magnetic signal of the incremental magnetic code disc and outputting a sine and cosine voltage signal; the subdivision chip is used for receiving the sine and cosine voltage signals and outputting angle increment signals when the absolute value magnetic encoder rotates, and the single-chip microcomputer is used for fusing the absolute angle position signals and the angle increment signals and outputting high-precision angle position signals. According to the invention, two magnetic signal measurement means with different principles are fused on one encoder, so that an absolute position can be provided