Double-Hall magnetoelectric encoder based on double-wheel structure and angle resolving method thereof

Abstract

The invention relates to a double-Hall magnetoelectric encoder based on a double-wheel structure and an angle calculation method thereof. The double-Hall magnetoelectric encoder comprises a novel encoder structure, and a permanent magnet rotor structure of a traditional encoder is replaced by a cam on a rotor, a special gear structure and a magnetic field generator which is kept static with a stator. Angle value signals are measured through a cam Hall sensor and a special gear Hall sensor, analog-to-digital conversion is conducted on the Hall signals through an analog-to-digital converter, and a cam angle value and a special gear angle value are obtained through a cam angle calculation module and a gear angle calculation module; the absolute angle position theta A of the rotor is obtained through the cam angle value, angle subdivision is carried out through the corresponding relation between the special gear angle value theta B and the theta A, and the subdivided angle value theta 2seg is obtained and output; the invention can effectively solve the problems that the equipment is unreliable and the precision cannot be ensured due to the material characteristics and the shape characteristics of the permanent magnet of the magnetoelectric encoder, and provides an angle resolving method on the basis of improving the structure.

Description

Technical field: [0001] The invention relates to a double-hall magnetoelectric encoder based on a double-wheel structure and an angle settlement method thereof, belonging to the technical field of magnetoelectric encoder manufacturing. Background technique: [0002] An encoder is a device that compiles signals or data and converts them into signals that can be used for communication, transmission and storage. It plays an important role in high-tech fields such as machinery, military industry, precision optical instruments, aerospace, etc. The most common encoders on the market today are photoelectric encoders and magnetoelectric encoders. Compared with photoelectric encoders, magnetoelectric encoders can work in harsher environments, but the resolution of magnetoelectric encoders is difficult to improve. The traditional magnetoelectric encoder is mainly composed of permanent magnets and the commonly used magnetoelectric encoder structure usually includes a stator, a rotor a...

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned problems, the technical problem to be solved in the present invention is to provide a dual Hall magnetoelectric encoder based on a double-wheel structure and its angle resolution method and its angle resolution method, aiming to solve the problems caused by the permanent magnet characteristics of the magnetoelectric encoder. The problems caused by unreliable encoders and poor control of manufacturing precision

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