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Encoder code wheel, absolute value encoder, position acquisition method and system

An absolute encoder and absolute position technology, applied in the encoder field, can solve the problems of polluted absolute position, low fault tolerance, error, etc., and achieve the effect of improving fault tolerance and realizing self-diagnosis function.

Pending Publication Date: 2018-08-24
SUZHOU INOVANCE TECH CO LTD
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Problems solved by technology

[0006] Since the above-mentioned phase difference θ is obtained by calculating the sine and cosine signals, the pollution brought by the external environment to any one of the code tracks will at least cause indistinctness of the absolute position of the low bit, resulting in inaccurate positioning or errors, resulting in a low position of the encoder. Accuracy, low error tolerance

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  • Encoder code wheel, absolute value encoder, position acquisition method and system
  • Encoder code wheel, absolute value encoder, position acquisition method and system
  • Encoder code wheel, absolute value encoder, position acquisition method and system

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Embodiment Construction

[0054] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0055] Such as figure 2 As shown, it is a schematic diagram of an embodiment of an encoder code disc of the present invention, and the encoder code disc can be used in an absolute value photoelectric encoder to assist in realizing precise positioning. In this embodiment, the code disc of the encoder includes a grating disc 1, and the disc surface of the grating disc 1 is provided with a first code track 11, a second code track 12 and a third code track 13, and the first code track 11, the second code track 13 The circle centers of the code track 12 and the third code track 13 are respectively ...

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Abstract

The invention provides an encoder code wheel, an absolute value encoder, a position acquisition method and system. The encoder code wheel comprises a grating disc, wherein the disc surface of the grating disc is provided with a first code channel, a second code channel and a third code channel, circle centers of the first code channel, the second code channel and the third code channel are all inthe rotation center of the grating disc; a total number of grooves of the first code channel is m*n, a total number of grooves of the second code channel is m*n-1, a total number of grooves of the third code channel is m*(n-1), wherein m and n are positive integers greater than 2. The design of three cursor code channels improves the fault tolerance ability, precision and stability of the absolutevalue encoder.

Description

technical field [0001] The present invention relates to the field of encoders, and more specifically relates to an encoder code disc, an absolute value encoder, and a position acquisition method and system. Background technique [0002] With the rapid development of industrial control technology and the continuous advancement of manufacturing industry upgrading, it provides a huge market for the development of the servo industry. As a feedback device in the servo system, the encoder effectively improves the working accuracy of the servo system. In recent years, with the rapid development of the automobile industry, CNC machine tool industry, elevator industry, and especially aerospace, the requirements for the accuracy, resolution, reliability, anti-interference, and stability of the encoder are getting higher and higher. [0003] Due to the low technical threshold of incremental encoders, most of the photoelectric encoders are incremental encoders at present, but due to th...

Claims

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Application Information

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IPC IPC(8): G01D5/347
CPCG01D5/34784
Inventor 董静
Owner SUZHOU INOVANCE TECH CO LTD
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