JPH03207256A - Linear servo motor - Google Patents

Linear servo motor

Info

Publication number
JPH03207256A
JPH03207256A JP60090A JP60090A JPH03207256A JP H03207256 A JPH03207256 A JP H03207256A JP 60090 A JP60090 A JP 60090A JP 60090 A JP60090 A JP 60090A JP H03207256 A JPH03207256 A JP H03207256A
Authority
JP
Japan
Prior art keywords
permanent magnet
iron core
parallel
projections
inside periphery
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP60090A
Other languages
Japanese (ja)
Other versions
JP2785406B2 (en
Inventor
Tetsuo Oishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shinko Electric Co Ltd
Original Assignee
Shinko Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shinko Electric Co Ltd filed Critical Shinko Electric Co Ltd
Priority to JP60090A priority Critical patent/JP2785406B2/en
Publication of JPH03207256A publication Critical patent/JPH03207256A/en
Application granted granted Critical
Publication of JP2785406B2 publication Critical patent/JP2785406B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE: To make generated thrust constant by matching the inside periphery of a permanent magnet, whose cross section in the longitudinal direction is defined by one part each of two parallel circular arcs, elliptical arcs, or hyperbolas, to projections provided at a field iron core.
CONSTITUTION: The longitudinal sectional form of a permanent magnet 13 is defined by one part each of two parallel circular arcs, two parallel elliptical arcs, or two parallel hyperbolas, and projections 11, with which the inside periphery of the permanent magnet 13 can match, are provided at regular intervals in the longitudinal direction on the face opposed to an armature iron core 3, of a field iron core 10, thus these projections 11 and the inside periphery of the permanent magnet 13 are matched with each other. And it is so arranged that the magnetic poles appearing at the top of the permanent magnet 13 may appear alternately as N pole, S pole. Accordingly, the permanence of a magnetic circuit is highest at the center of the permanent magnet 13, and becomes lower as it goes to the end, and becomes lowest between adjacent permanent magnets 13. Hereby, the space distribution of a field magnetic fluxes approximates a sine wave, and the thrust applied to the field iron core 10 can be made a smooth constant value.
COPYRIGHT: (C)1991,JPO&Japio
JP60090A 1990-01-08 1990-01-08 Linear servo motor Expired - Fee Related JP2785406B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60090A JP2785406B2 (en) 1990-01-08 1990-01-08 Linear servo motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60090A JP2785406B2 (en) 1990-01-08 1990-01-08 Linear servo motor

Publications (2)

Publication Number Publication Date
JPH03207256A true JPH03207256A (en) 1991-09-10
JP2785406B2 JP2785406B2 (en) 1998-08-13

Family

ID=11478227

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60090A Expired - Fee Related JP2785406B2 (en) 1990-01-08 1990-01-08 Linear servo motor

Country Status (1)

Country Link
JP (1) JP2785406B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000001059A1 (en) * 1998-06-29 2000-01-06 Siemens Aktiengesellschaft Linear synchronous motor
EP1164684A2 (en) * 2000-06-16 2001-12-19 Fanuc Ltd Rotor for synchronous motor
EP1372251A2 (en) * 2002-06-11 2003-12-17 Fanuc Ltd Linear motor
EP1615322A1 (en) * 2003-03-25 2006-01-11 Thk Co. Ltd. Linear motor actuator
WO2009057442A1 (en) * 2007-10-31 2009-05-07 Thk Co., Ltd. Linear motor, and linear motor system
JP2010104136A (en) * 2008-10-23 2010-05-06 Mitsubishi Electric Corp Linear motor
CN101789677A (en) * 2010-03-15 2010-07-28 哈尔滨工业大学 Secondary structure of low-thrust waved sine wave permanent magnet liner synchronous motor

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6713899B1 (en) 1998-06-29 2004-03-30 Siemens Aktiengesellschaft Linear synchronous motor
WO2000001059A1 (en) * 1998-06-29 2000-01-06 Siemens Aktiengesellschaft Linear synchronous motor
US6812614B2 (en) 2000-06-16 2004-11-02 Fanuc Ltd. Rotor for a synchronous motor defined by a hyperbolic function
EP1164684A3 (en) * 2000-06-16 2004-01-02 Fanuc Ltd Rotor for synchronous motor
EP1164684A2 (en) * 2000-06-16 2001-12-19 Fanuc Ltd Rotor for synchronous motor
EP1372251A3 (en) * 2002-06-11 2004-03-10 Fanuc Ltd Linear motor
EP1372251A2 (en) * 2002-06-11 2003-12-17 Fanuc Ltd Linear motor
US6873066B2 (en) 2002-06-11 2005-03-29 Fanuc Ltd Linear motor
EP1619780A1 (en) * 2002-06-11 2006-01-25 Fanuc Ltd Linear motor
EP1615322A1 (en) * 2003-03-25 2006-01-11 Thk Co. Ltd. Linear motor actuator
EP1615322A4 (en) * 2003-03-25 2010-05-26 Thk Co Ltd Linear motor actuator
WO2009057442A1 (en) * 2007-10-31 2009-05-07 Thk Co., Ltd. Linear motor, and linear motor system
JPWO2009057442A1 (en) * 2007-10-31 2011-03-10 Thk株式会社 Linear motor and linear motor system
JP2010104136A (en) * 2008-10-23 2010-05-06 Mitsubishi Electric Corp Linear motor
CN101789677A (en) * 2010-03-15 2010-07-28 哈尔滨工业大学 Secondary structure of low-thrust waved sine wave permanent magnet liner synchronous motor

Also Published As

Publication number Publication date
JP2785406B2 (en) 1998-08-13

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees