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Title:
ACTUATOR
Document Type and Number:
WIPO Patent Application WO/2000/048296
Kind Code:
A1
Abstract:
An actuator comprising control means disposed in a housing and adapted for controlling the rotation of a rotary shaft through drive means, rotary shaft displacement detecting means disposed in the housing and adapted for detecting the rotational displacement of the rotary shaft, the rotary shaft born rotatably, a permanent magnet integrated coaxially with the rotary shaft, magnetic field generating means for generating a magnetic field to produce a rotating force in the permanent magnet, and a temperature sensor for measuring the temperature of the permanent magnet.

Inventors:
ISHII SHINJI (JP)
KUROKI YOSHIHIRO (JP)
Application Number:
PCT/JP2000/000755
Publication Date:
August 17, 2000
Filing Date:
February 10, 2000
Export Citation:
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Assignee:
SONY CORP (JP)
ISHII SHINJI (JP)
KUROKI YOSHIHIRO (JP)
International Classes:
H02K11/00; H02K11/04; H02K21/14; H02K29/06; H02K7/116; (IPC1-7): H02K21/14; H02K29/00; H02K11/00; H02P6/08
Foreign References:
JPS6356155A1988-03-10
JPH08184349A1996-07-16
JPH08265919A1996-10-11
JPH07337072A1995-12-22
JPH1127984A1999-01-29
JPH0236790A1990-02-06
JPH04351454A1992-12-07
JPH02228290A1990-09-11
GB2284106A1995-05-24
Other References:
See also references of EP 1071194A4
Attorney, Agent or Firm:
Tanabe, Shigemoto (5th floor 11-11-508, Jingumae 1-chome Shibuya-ku Tokyo, JP)
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