Finite angle value subdivision method and device based on angle value growth

Abstract

The invention relates to a finite angle value subdivision method and device based on angle value growth. The method and device comprise the following steps: a single-polar Hall sensor measures a single-polar angle value signal, an A / D converter performs analog-to-digital conversion on the Hall signal, and a single-polar angle value calculation module obtains a finite angle single-polar angle valuetheta1; a multi-polar Hall sensor measures a multi-polar magnetic steel signal, the A / D converter performs analog-to-digital conversion on the Hall signal, and a multi-polar angle value calculation module obtains a finite angle multi-polar angle value theta2; and an angle growing module completely compensates the incomplete finite angle single-polar angle value theta1 and finite angle multi-polarangle value theta2, and outputs the complete finite angle single-polar angle value theta1_tran and the complete finite angle multi-polar angle value theta2_tran, thereby realizing subdivision processing of the angle value of a finite angle multi-polar magnetoelectric encoder by angle value subdivision processing, and realizing high resolution angle value output of the finite angle magnetoelectricencoder.

Description

technical field [0001] The present invention generally relates to a magnetoelectric encoder, in particular to a method for subdividing the angle value of a limited angle magnetoelectric encoder based on angle value growth. Background technique [0002] Rotary encoders play an important role in modern industry, especially in motor control. Rotary encoders are widely used in many fields of application, such as mechanical engineering, robotics, aerospace, etc. At present, the mainstream products of encoders can be divided into two categories: photoelectric encoders and magnetoelectric encoders. The photoelectric encoder converts the light distribution projection into an analog signal, and then solves the angle value. Despite their widespread use in industrial applications, optical encoders have some significant disadvantages. It is made of brittle material, which is not suitable for some special working occasions due to its fragility. [0003] Relatively speaking, the magne...

AI Technical Summary

Problems solved by technology

However, during the reciprocating swing of the finite angle value, the initial position and the end position are random, and the coverage of the angle value is incomplete

In addition, due to the limited working angle range, the direction of the output angle value is always changing back and forth, which is not conducive to the subdivision processing of limited angle values, and is not conducive to the output of high-resolution angle values ​​with limited angle values

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