On-line actual error compensation system of sine and cosine encoder

A technology of sine-cosine encoder and actual error, which is applied in the direction of instruments, using optical devices to transmit sensing components, etc., and can solve problems such as lag

Active Publication Date: 2010-05-19
KEDE NUMERICAL CONTROL CO LTD
View PDF0 Cites 43 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Sine-cosine wave shaping involves converting the waveform into a tractable form on a purely hardware basis, but in the process the new waveform will lag behind the input waveform

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • On-line actual error compensation system of sine and cosine encoder
  • On-line actual error compensation system of sine and cosine encoder
  • On-line actual error compensation system of sine and cosine encoder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0056] Such as image 3 As shown, the devices used in this system include: interpolation period generation module, sine and cosine data sampling and calculation module, whole period calculation module, table lookup module, output mode selection module, pulse mode output module and absolute value output module. Its function and structure are exactly the same as those of the subdivision device introduced in the background art and will not be described here. The difference is that an error table storage module is newly added, which is used to store the error value of any point in a circle of the sine-cosine output encoder obtained by the above method; The compensation value after accumulating the subdivision value relative to the error value of the error table storage module is added to the result obtained by multiplying the number of sine and cosine signals of the entire cycle of the encoder input by the whole cycle counting module by the current subdivision multiple . In addi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an on-line actual error compensation system of a sine and cosine encoder, which compensates for an error in the subdivision process of improving the resolution ratio of a sine and cosine output encoder on the basis of the subdivision technology of the sine and cosine output encoder so as to improve the accuracy of a feedback value of the encoder. The system has simple implementation, good using effect and excellent adaptability by combining an on-line actual error compensation method of the sine and cosine encoder with an accuracy compensation device of the sine and cosine encode, wherein the accuracy compensation device comprises a difference compensation period generation module, a sine and cosine data sampling and calculating module, an entire period calculating module, a table look-up module, an output mode selection module, a pulse mode output module, a modulus output module, an error table storage module and a summation module; and the system is suitable for the wide popularization in the fields of position measurement, angle measurement and motion control such as numerical control machine tools, high-accuracy measurement instruments and the like which are outputted by using a sine and cosine signal.

Description

technical field [0001] The invention relates to an encoder precision compensation system, in particular to an online actual error compensation system for a sin-cosine encoder. Background technique [0002] In recent years, the emerging product, the encoder with sine and cosine output, has been widely used in the field of numerical control because of its high precision, simple and fast follow-up processing, and intuitive and easy-to-use numerical values. The encoder with sine and cosine output is a high-resolution, high-precision, low-cost balanced product , has many advantages: [0003] 1. The output waveform contains relative phase information, so the resolution can be greatly improved by using a specific interpolation method without the need to increase the physical reticle. [0004] 2. The output spectrum of the encoder with sine and cosine output is relatively pure, and the spectrum specific components are less, so it is more suitable for long-distance transmission than...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01D18/00G01D5/26
Inventor 于德海张赞秋隋继平何兴家陈虎
Owner KEDE NUMERICAL CONTROL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap