Absolute encoder, motor control method and related assemblies

Abstract

The application discloses an absolute encoder comprising an encoding roller connected with a measured mechanical rotating shaft by a coupler, an image collector, and an angle identification device. Acode way for indicating the rotation angle of the encoding roller is engraved in the outer side wall of the encoding roller. The image collector collects the outer side wall image of the encoding roller through an encoder slit, wherein the encoder slit is parallel to the axis of the encoding roller. The angle identification device connected with the image collector is used for determining the rotation angle of a measured mechanical rotating shaft based on the outer side wall image. With the absolute encoder, the reading error caused by the radial runout of the encoder during the measuring process is avoided; and the measuring accuracy of the encoder is improved. In addition, the application also discloses a motor control method, a computer-readable storage medium and a motor control devicethat have the same beneficial effects as the absolute encoder.

Description

technical field [0001] The invention relates to the technical field of industrial control, in particular to an absolute encoder, a motor control method, a motor control device and a computer-readable storage medium. Background technique [0002] Encoders are mainly used in angular position measurement in the field of industrial control. With the stride forward of industrial control, corresponding factory equipment such as robotic arms and large-stroke displacement measurement and control devices have more stringent requirements for rotating equipment. Encoders are mostly used as sensors for detecting positions in servo drive systems, so the accuracy of encoders determines the static indicators of servo systems. In the production and development process of the encoder, not only the performance of the encoder should be improved, but also the cost should be controlled and the economy of the product should be paid attention to. At present, the most widely used encoder type is ...

AI Technical Summary

Problems solved by technology

However, the code track of the disk of the above-mentioned encoder code is all engraved on materials such as glass, and the motor will inevitably produce a certain radial runout during operation, which may cause a slight displacement of the code track, and then Problems that cause incorrect encoder readings

[0004] Therefore, how to avoid the reading error caused by the radial runout of the encoder during the measurement process and improve the measurement accuracy of the encoder is a technical problem that those skilled in the art need to solve at present

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