Intelligentized motor magnetic coding system and working method thereof

Abstract

The invention discloses an intelligentized motor magnetic coding system and a working method thereof. The intelligentized motor magnetic coding system comprises a motor, a magnetic coder, and a frequency conversion controller used for controlling the whole system, and is characterized in that the magnetic coder comprises an AS5045 for conducting real-time measurement and coding on the current angle of the motor and an EEPROM for saving characteristic parameters of the motor; the frequency conversion controller receives the current angle information of the motor fed back by the AS5045 and the characteristic parameter information of the motor fed back by the EEPROM, so as to control the operation of the motor. As the frequency conversion controller can read the current angle information of the motor fed back by the AS5045 and the characteristic parameter information of the motor fed back by the EEPROM, the self-learning process of the frequency conversion controller is eliminated; on the aspect of hardware circuit processing, the multiplexing function of a pin is fully utilized, so as to reduce energy consumption; due to the working method, the work efficiency of the whole system is greatly improved.

Description

technical field [0001] The invention relates to an intelligent magnetic encoding system for a motor and a working method thereof. Background technique [0002] In the motor drive closed-loop vector control algorithm, the detection of the motor speed is essential. The signal can be fed back to the controller through the encoder, and processed by the controller, and converted into the required motor speed, position and other important information parameters. When the motor is running, it can accurately measure the angle within the entire 360° range through a non-contact magnetic encoder product AS5045, which can be accurate to 0.0879 degrees. [0003] The traditional processing method is that when the magnetic encoder is used in the motor drive control to feed back the motor angle information, a magnetic encoder circuit board that can be installed with the motor shaft is generally designed. The magnetic encoder circuit board uses AS5045 modules as the The main, magnetic encod...

AI Technical Summary

Problems solved by technology

However, since the zero position of each permanent magnet synchronous motor is different, the variable frequency controller must perform self-learning again when replacing a different motor, and store the relevant parameters in the variable frequency controller instead of reading directly through the magnetic encoder. , as long as the motor is replaced, the motor self-learning step cannot be omitted, and the AS5045 can only feed back the current angle of the motor, and convert it into speed and other information through software algorithms

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