Method on Signal Processing in Single Pair-pole Magnetic Encoder
Li Rui · Yibiao jishu yu chuanganqi · 2012
A novel method naming arithmetic operations was proposed to analyze and process the generated voltage-signal from the single pair-pole magnetic encoder.Dual orthogonal voltage-signals were generated by two vertical hall sensors which were placed in the bottom of a columned magnet.When signal conditioning completed,rotational angle value would be directly displayed after determined the quadrant,performed arithmetic operations and nonlinear correction in FPGA chip.This paper designed and implemented the single pair-pole magnetic encoder with high-speed,high-resolution and high-accuracy.