Rotary encoder

A rotary encoder and encoder disk technology, applied in the encoder field, can solve the problems of low coding accuracy, complex structure, and difficulty in characterization, and achieve the effect of reducing the number of code channels, satisfying high precision and miniaturization

Active Publication Date: 2019-10-25
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional multi-code encoder has disadvantages such as too many code channels, complex structure, difficult description, and low coding accuracy. Therefore, multi-code encoders such as multi-code absolute rotary grating encoders have been It is difficult to meet the dual needs of high precision and miniaturization in related fields

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Embodiment Construction

[0024] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] Such as figure 1 as shown, figure 1 A schematic structural diagram of a rotary encoder provided in an embodiment of the present invention, the rotary encoder may include:

[0026] A code disc 1 with a ring code track, a reading head 2 and a light source device 4;

[0027] The circular code track includes two semicircular sub-code tracks 3, wherein each sub-code track 3 is evenly distributed with ligh...

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Abstract

The invention discloses a rotary encoder, which comprises an encoder disk having an annular code channel, a reading head and a light source device, wherein the annular code channel comprises two semicircular subcode channels, bright and dark stripes with the same width are evenly distributed on each subcode channel, and the widths of the bright and dark stripes of the two subcode channels are different; the number of reading heads is two, and the two reading heads are respectively arranged at two end positions corresponding to annular code channel diameters; and the light source device is usedfor providing illumination for each reading head respectively. The rotary encoder combines the plurality of code channels on the same code channel, so that one annular code channel in the encoder canachieve the measurement precision of a plurality of annular code channels in the prior art, thereby being capable of satisfying dual requirements for high precision and miniaturization of the encoder.

Description

technical field [0001] The invention relates to the technical field of encoders, in particular to a rotary encoder. Background technique [0002] As a high-precision position sensor, the encoder is the core functional component of numerical control equipment, precision measuring instruments, robots, aerospace and precision processing equipment, etc., and can realize high-precision displacement or angle measurement. The encoder is a key component in practical engineering applications. It usually plays the role of physical quantity detection and feedback, and directly affects the control accuracy and performance of the control system. [0003] At present, rotary encoders include single-code encoders and multi-code encoders. Compared with single-code encoders, multi-code encoders have higher measurement accuracy. However, the traditional multi-code encoder has disadvantages such as too many code channels, complex structure, difficult description, and low encoding accuracy. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/347
CPCG01D5/3473
Inventor 周建丰王晗王瑞洲董永超蔡念曾景华江文佳辛正一
Owner GUANGDONG UNIV OF TECH
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