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Patent Searching and Data


Title:
DISPLACEMENT SENSOR AND A MAGNETIC BEARING SYSTEM USING THE SAME
Document Type and Number:
WIPO Patent Application WO/2011/108831
Kind Code:
A2
Abstract:
In a displacement sensor and a magnetic bearing system using the same, the displacement sensor comprises: a first coil unit comprising at least one coil; a second coil unit comprising at least one coil which is differentially connected to one side of the coil(s) of the first coil unit; a sensor drive means for driving a first power source voltage and a second power source voltage having the same drive frequency; and a detection circuit for extracting displacement data from a differential signal generated by the first coil unit and the second coil unit.

Inventors:
CHOI, Sang-Hyun (522-45, Galhyeon-dong Eunpyeong-gu, Seoul 122-050, 122-050, KR)
Application Number:
KR2011/001397
Publication Date:
September 09, 2011
Filing Date:
February 28, 2011
Export Citation:
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Assignee:
D & M TECHNOLOGY CO., LTD. (Suite 1201, Ace Techno Tower 3 Cha197-48, Guro-dong, Guro-gu, Seoul 152-050, 152-050, KR)
주식회사 디엔엠 테크놀로지 (서울 구로구 구로동 197-48 에이스테크노타워3차 1201, 152-050 Seoul, 152-050, KR)
Foreign References:
JPH07314288A1995-12-05
KR20000009229A2000-02-15
KR910005479B11991-07-31
JPH10319064A1998-12-04
Other References:
None
Attorney, Agent or Firm:
PARK, Young-Woo (5F. Seil Building, 727-13 Yeoksam-dong Gangnam-gu, Seoul 135-921, 135-921, KR)
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Claims: