Title:
【発明の名称】レゾルバ
Document Type and Number:
Japanese Patent JP3047231
Kind Code:
B1
Abstract:
A resolver comprises excitation windings for receiving excitation signals and a detection winding for outputting a detection signal. Displacement of a passive member provided with the excitation windings or the detection winding is detected on the basis of the detection signal which varies with the displacement of the passive member. A modulated signal obtained through modulation of a high-frequency signal by an excitation signal is input to each of the excitation windings, and a detection signal is obtained through demodulation of a modulated signal output from the detection winding. Since the modulated signal obtained through modulation (amplitude modulation) of the high-frequency signal by means of the excitation signal is applied to the excitation windings, the number of turns in the excitation and the detection windings can be reduced.
Inventors:
Shiro Shimahara
Application Number:
JP9636199A
Publication Date:
May 29, 2000
Filing Date:
April 02, 1999
Export Citation:
Assignee:
Shiro Shimahara
International Classes:
G01B7/00; G01D5/20; G01D5/244; G01D5/245; (IPC1-7): G01D5/245; G01B7/00
Domestic Patent References:
| JP63218819A | ||||
| JP8292066A | ||||
| JP275518U |
Attorney, Agent or Firm:
Shigeru Shimoda