Title:
【発明の名称】角度位置エンコーダ
Document Type and Number:
Japanese Patent JPH08509809
Kind Code:
A
Abstract:
PCT No. PCT/GB94/00948 Sec. 371 Date Dec. 14, 1995 Sec. 102(e) Date Dec. 14, 1995 PCT Filed May 3, 1994 PCT Pub. No. WO94/25829 PCT Pub. Date Nov. 10, 1994An apparatus for indicating the angular position of a rotatable member includes a drive coil with its axis corresponding to the axis of rotation of the rotatable member. A coil is wound around the rotatable member, and a capacitor is provided in the coil to form an LC resonant circuit. The coil on the rotatable member is wound so that application of an alternating magnetic field to the drive coil induces a resonance in the LC circuit which is constant for all angular positions of the rotatable member. Pick-up coils are provided such that the planes of these coils and the drive coil are orthogonal. The resonance of the LC circuit produces signals in the output coils which depend upon the angular position of the rotatable member. The signals may be processed to determine that angular position, and the processing is simplified with this arrangement of output coils since the signals produced therein are quadrature signals.
More Like This:
| JP7008568 | Resolver excitation circuit |
| JP2018004630 | ELECTRONIC ABSOLUTE TYPE ENCODER |
| JP3469903 | [Title of Invention] Eddy Current Sensor |
Inventors:
Dame's, Andrew Nicholas
Application Number:
JP52406494A
Publication Date:
October 15, 1996
Filing Date:
May 03, 1994
Export Citation:
Assignee:
Scientific Generics Limited
International Classes:
G01D5/20; G06M1/10; G06M1/274; (IPC1-7): G01D5/20
Attorney, Agent or Firm:
Yasunori Otsuka (1 person outside)