Method and device for precise angle division of multi-pole magnetoelectric encoder based on integer division judgment

Abstract

The present invention relates to a multi-pole magnetoelectric encoder angular precision method and device for integer division judgment, including: single-pole and multi-pole Hall sensors measure angle value signals, and analog-to-digital converters measure Hall signals Analog-to-digital conversion, through the single-pole angle calculation module and the multi-pole angle calculation module to obtain the single-pole angle value and the multi-pole angle value; using the boundary number integer division and the current solution cycle multi-pole angle value pole number calculation module, It is used to determine the calculation value of multi-pair polar angle value and pole number in the current solution cycle; the angle fine-segmentation processing module performs angle value fine-segmentation processing on the basis of the multi-pair polar angle value pole number calculation value in the current solution cycle, and obtains the final fine-segmented Multi-pair pole angle value, the present invention can effectively solve the problem that it is difficult to accurately judge the position of the zero-crossing point of the angle value caused by the signal noise of the magnetoelectric encoder, realize accurate judgment of the number of poles of the multi-pole magnetoelectric encoder, and realize angle precision.

Description

technical field [0001] The invention belongs to the field of encoder manufacture, and in particular relates to a method and device for precise angle division of a multi-pole magnetoelectric encoder based on integer division judgment. Background technique [0002] Magnetic encoders have the advantages of simple structure, high temperature resistance, oil resistance, impact resistance, small size, and low cost, and have unique advantages in miniaturization and harsh environmental conditions. E.g, figure 1 is an exemplary Hall element distribution diagram for a multi-pole magnetoelectric encoder, such as figure 1 As shown, there are 4 Hall elements A+, B+, A-, B-, among which the single pair of Hall elements A+, A- are distributed around the center of the signal processing board at 90° apart. Under the action of single-pole magnetic steel, voltage signals with a phase difference of 90° are generated on the two Hall elements. Among them, the multi-pole Hall B+ and B- surround...

AI Technical Summary

Problems solved by technology

[0004] In response to the above problems, the present invention proposes a solution, which aims to solve the problem that the position of the zero-crossing point of the angle value caused by the signal noise of the magnetoelectric encoder is difficult to accurately judge, realize accurate judgment of the number of poles of the multi-pole magnetoelectric encoder, and realize accurate angle measurement. Minute

Images