Title:
MULTI-PHASE DIFFERENTIAL SYNTHESIS RESOLVER APPARATUS
Document Type and Number:
WIPO Patent Application WO/2021/201472
Kind Code:
A1
Abstract:
A novel multi-phase resolver topology and apparatus is provided for measuring a displacement of movement body more precisely and economically. In variable reluctance (VR) resolvers, N coil-poles are placed at N equally spaced positions over one turn of the stator, N being an odd number greater than or equal to 5. Each coil serves both as an excitation and a sensing coil, and all N coils are wound with the same number of turns at an identical electrical polarity. Depending on the installed rotor lobe shape, N sinusoidal or quasi-square waveform displacement signals are sensed on multi-phase resolver, and from which two-phase orthogonal displacement signals are optimally and differentially synthesized. The multi-phase resolver topology and differential synthesis method is also applied to other types of resolvers, such as wound-rotor, inductance, capacitive, and magnetic resolvers.
Inventors:
PARK CHUN SOO (KR)
Application Number:
PCT/KR2021/003389
Publication Date:
October 07, 2021
Filing Date:
March 18, 2021
Export Citation:
Assignee:
PARK CHUN SOO (KR)
International Classes:
H02K24/00; G01D5/20; G01D5/245
Domestic Patent References:
| WO2014091032A2 | 2014-06-19 |
Foreign References:
| KR101937266B1 | 2019-01-10 | |||
| JP2015012667A | 2015-01-19 | |||
| JP2013062973A | 2013-04-04 | |||
| JPS5979808A | 1984-05-09 | |||
| KR102144254B1 | 2020-08-12 |
Attorney, Agent or Firm:
CHO, Chul Hyun (KR)
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