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Patent Searching and Data


Title:
ABSOLUTE MAGNETIC ROTATING ENCODER
Document Type and Number:
WIPO Patent Application WO/2014/117734
Kind Code:
A2
Abstract:
Provided is an absolute magnetic rotating encoder, comprising a rotation shaft, multiple rotating wheels that can rotate along the rotation shaft, multiple encoding units that correspond to the multiple rotating wheels one-to-one, and one or more permanent magnet assemblies that provide the magnetic bias to the multiple encoding units. Each encoding unit comprises a magnetically permeable encoder disc, the structure thereof enabling the magnetic permeability thereof to be different according to the different positions of the rotation shaft, and comprises multiple sensor units that comprise multiple magnetic sensors. The sensor units are used to sense the magnetic permeability of the magnetically permeable encoder disc and to output the sensor signals that characterize the relative position of the magnetically permeable encoder disc. According to the sensor signals of the sensor units, each encoding unit outputs the value that characterizes the selected rotation position of the corresponding rotation wheel. The present invention enables an absolute magnetic rotating encoder that is simple and low in cost and has more precise magnetic encoder discs.

Inventors:
DEAK JAMES GEZA (CN)
WEI JILIE (CN)
LIU JINGFENG (CN)
Application Number:
PCT/CN2014/071725
Publication Date:
August 07, 2014
Filing Date:
January 29, 2014
Export Citation:
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Assignee:
JIANGSU MULTIDIMENSIONAL TECHNOLOGY CO LTD (CN)
International Classes:
G01F15/06; G01D5/12
Foreign References:
CN203083583U2013-07-24
CN102628703A2012-08-08
CN2903916Y2007-05-23
CN2723965Y2005-09-07
US5543613A1996-08-06
JP2005274249A2005-10-06
Other References:
None
See also references of EP 2952857A4
Attorney, Agent or Firm:
SUZHOU CREATOR PATENT & TRADEMARK AGENCY LTD. (CN)
苏州创元专利商标事务所有限公司 (CN)
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