Motor encoder positioning method and system

Abstract

The invention discloses a motor encoder positioning method and a motor encoder positioning system. The method comprises the steps of locking the position of a motor rotor according to a preset first electrical angle value and obtaining a first encoder numerical value of an absolute type encoder, wherein the first encoder numerical value is set as a first position of the motor rotor when the first electrical angle value is reached; confirming that a motor is in a normal operation state; starting the normally operating motor to obtain a fourth encoder numerical value of the absolute type encoder corresponding to the running position of the motor rotor after the motor rotor rotates; and obtaining the real-time running position of the motor rotor according to the fourth encoder numerical value and the first encoder numerical value. According to the method, by obtaining the first encoder numerical value of the absolute type encoder and then obtaining the deviation value between the obtained fourth encoder numerical value and first encoder numerical value, the running position value of the motor rotor can be confirmed, so that the effect of fixing the running position of the motor rotor is achieved; the system assembly is simplified and the dead center position of the motor rotor does not need to be adjusted manually.

Description

technical field [0001] The invention relates to the technical field of motor rotor zero point calibration, in particular to a motor encoder positioning method and system. Background technique [0002] Generally, the motor needs to use the encoder to detect the rotation angle of the rotor during use. When the rotor angle is a special value (usually zero position), the parts connected to the shaft move to a special position, that is, when the shaft rotates to this position, The encoder matched with the motor outputs the zero position signal exactly. [0003] In order to coordinate the output signal of the encoder with the motor shaft, the motor with the shaft generally needs to return the encoder to the zero point before working as the starting point of the work; when assembling the encoder to the motor, the zero point of the motor rotor needs to be The position is aligned with the zero position of the encoder. When the controller controls the motor, it can know the current r...

AI Technical Summary

Problems solved by technology

[0004] However, the operation method of aligning the zero point position of the motor rotor with the zero point position of the encoder is difficult to achieve accurate alignment during assembly, and the assembly process is complicated; moreover, the zero point position of the motor rotor and the zero point position of the encoder After the position is adjusted, if the encoder is damaged, it is difficult for the customer to reinstall and check the zero position by himself. It is easy to cause the product to fail to achieve the effect of use due to the assembly deviation between the zero position of the encoder and the zero position of the motor rotor.

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