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Encoder correction system and method

A correction system and correction method technology, applied in the field of encoders, can solve problems such as affecting the accuracy of absolute value encoders, and achieve the effect of improving output accuracy

Pending Publication Date: 2018-12-14
SUZHOU INOVANCE TECH CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an encoder correction system and method for the above-mentioned problem that the accuracy of the absolute encoder is affected by the consistency nonlinear error

Method used

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  • Encoder correction system and method
  • Encoder correction system and method

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Embodiment Construction

[0032] In order to make the object, technical solution and advantages of the present invention clearer, 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.

[0033] Such as figure 1 , 2 As shown, it is a schematic diagram of the first embodiment of the encoder calibration system of the present invention. The encoder calibration system can be used to calibrate the encoder 1 under test. The encoder 1 under test can specifically be a photoelectric encoder, a magnetic encoder, Incremental encoder with Z signal, etc. The encoder correction system in this embodiment includes a reference encoder 2, a dragging device 3, a data buffer device 4 and a host computer 5, wherein the data buffer device 4 can be a device with high-speed data access capability, and th...

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Abstract

The present invention provides an encoder correction system and method. The system comprises a reference encoder, a twin trawling device, a data cache device and an upper computer; a detected encoderand the reference encoder are driven by the twin trawling device for rotation; the data cache device collects position signals output by the detected encoder and the reference encoder at the same timeat the same sampling period when the detected encoder and the reference encoder are synchronously rotated; the upper computer comprises an error analysis unit, a fitting unit and a burning unit, theerror analysis unit is configured to generate an original error curve according to the position signals, the fitting unit is configured to generate a correction curve according to the original error curve, and the burning unit is configured to write in the correction curve into the detected encoder. The detected encoder and the reference encoder are subjected to twin trawling, and the detected encoder is corrected according to the position signals of the reference encoders so as to greatly improve the output precision of the detected encoder.

Description

technical field [0001] The present invention relates to the field of encoders, and more specifically relates to an encoder correction system and method. 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. The absolute encoder, because of its absolute uniqueness and anti-interference for each output position, has been more and more widely used in various industrial systems for angle, length measurement and positioning control. [0003] High-resolution absolute value photoelectric encoders will have consistent non-linear errors in the design, production, process and other links, which will affect their accuracy. [0004] Consistency non-linear error is the most important factor affecting ...

Claims

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Application Information

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IPC IPC(8): G01D18/00
CPCG01D18/00
Inventor 张文农
Owner SUZHOU INOVANCE TECH CO LTD
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