High-precision magnetic encoder module design based on real-time error compensation algorithm

Abstract

The continuous development of industrial automation requires more and more control precision for automated control systems. As a key component of the servo motor control system, the encoder has a great influence on the accuracy of the control system. Although the common photoelectric encoder has relatively high precision, its control structure is limited by these unfavorable external environments due to its complicated structure, difficulty in integration, and vulnerability to external environments such as dust, oil, water vapor, and vibration. A high-precision magnetic encoder design based on error compensation algorithm proposed in this paper can not only effectively overcomes the influence of these unfavorable conditions, but also introduces an error compensation algorithm based on ordinary magnetic encoder, which can be compared with ordinary magnetic encoder. The encoder has higher position feedback accuracy and greater stability. it can provide position information with real-time error not exceeding 0.2° within general industrial servo motor speed range. The high-precision magnetic encoder module has low cost, simple structure and easy integration, and also has considerable practical value in the field of industrial automation.