CA1169906A - Direct current motor with improved pole piece that reduces cogging - Google Patents

Direct current motor with improved pole piece that reduces cogging

Info

Publication number
CA1169906A
CA1169906A CA000391141A CA391141A CA1169906A CA 1169906 A CA1169906 A CA 1169906A CA 000391141 A CA000391141 A CA 000391141A CA 391141 A CA391141 A CA 391141A CA 1169906 A CA1169906 A CA 1169906A
Authority
CA
Canada
Prior art keywords
pole piece
edges
armature
direct current
permanent magnet
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.)
Expired
Application number
CA000391141A
Other languages
English (en)
French (fr)
Inventor
Dale W. Sievert
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.)
Honeywell Inc
Original Assignee
Honeywell Inc
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 Honeywell Inc filed Critical Honeywell Inc
Application granted granted Critical
Publication of CA1169906A publication Critical patent/CA1169906A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
    • H02K23/04—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having permanent magnet excitation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/06—Magnetic cores, or permanent magnets characterised by their skew

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc Machiner (AREA)
CA000391141A 1980-12-01 1981-11-30 Direct current motor with improved pole piece that reduces cogging Expired CA1169906A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US211,887 1980-12-01
US06/211,887 US4341969A (en) 1980-12-01 1980-12-01 Direct current motor with improved pole piece that reduces cogging

Publications (1)

Publication Number Publication Date
CA1169906A true CA1169906A (en) 1984-06-26

Family

ID=22788698

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000391141A Expired CA1169906A (en) 1980-12-01 1981-11-30 Direct current motor with improved pole piece that reduces cogging

Country Status (6)

Country Link
US (1) US4341969A (en:Method)
EP (1) EP0053485B1 (en:Method)
JP (1) JPS57173365A (en:Method)
AU (1) AU554972B2 (en:Method)
CA (1) CA1169906A (en:Method)
DE (1) DE3176775D1 (en:Method)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4797592A (en) * 1982-06-17 1989-01-10 Kollmorgen Technologies Corporation Dynamo electric machine with upwardly shifted ripple frequency
US4593216A (en) * 1982-09-24 1986-06-03 Ibm Business Machines Corporation Rotary stepping motor having improved construction
US5047682A (en) * 1986-01-13 1991-09-10 Papst-Motoren Gmbh & Co. Kg Permanent magnet excited electric motor
EP0409661B1 (en) * 1989-07-21 1995-01-11 Mitsubishi Chemical Corporation Motor
IT1261598B (it) 1993-09-30 1996-05-23 Gate Spa Motore elettrico a magneti permanenti con coppia di riluttanza ridotta
US5753991A (en) * 1994-12-02 1998-05-19 Hydro-Quebec Multiphase brushless AC electric machine
EP0748027B1 (en) * 1995-06-07 2006-09-06 General Electric Company Dynamoelectric machine and rotor construction thereof
US5783890A (en) * 1995-06-26 1998-07-21 Cleveland Motion Controls, Inc. Imprinted geometric magnetic anticog permanent magnet motor
US6166463A (en) * 1998-11-25 2000-12-26 Woodward, Jr.; Richard C. Axial force electrical machines
US6204584B1 (en) 2000-01-18 2001-03-20 Cleveland Motion Controls, Inc. Low cogging torque brushless motor rotor
US6713922B2 (en) * 2000-12-29 2004-03-30 Otis Elevator Company Integrally skewed permanent magnet for use in an electric machine
JP4740480B2 (ja) * 2001-06-29 2011-08-03 アスモ株式会社 回転電機
US6858960B1 (en) 2002-09-17 2005-02-22 Dana Corporation Low cogging permanent magnet motor
JP3839428B2 (ja) * 2003-06-10 2006-11-01 アスモ株式会社 直流機
JP2006086319A (ja) * 2004-09-16 2006-03-30 Mitsubishi Electric Corp リング型焼結磁石
JP4940872B2 (ja) * 2006-10-03 2012-05-30 株式会社ジェイテクト 電動モータのステータ、電動モータ、及び電動ポンプユニット
DE102006061628A1 (de) * 2006-12-27 2008-07-03 Robert Bosch Gmbh Elektrische Maschine
NL2003978C2 (en) 2008-12-19 2010-09-20 Monsanto Invest Nv Method of breeding cysdv-resistant cucumber plants.
CN107134865B (zh) * 2017-05-15 2019-05-07 广东工业大学 一种确定永磁体削角的方法及装置
CN115800567B (zh) * 2022-11-23 2025-11-11 浙江联宜电机有限公司 直流有刷电机的磁钢结构及直流有刷电机

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE436789C (de) * 1926-11-09 Siemens Schuckertwerke G M B H Verfahren zur Herstellung von Einschnitten an den Polhoernern ungeblaetterter Magnetpole elektrischer Maschinen
DE104021C (en:Method) *
GB439439A (en) * 1934-09-24 1935-12-06 English Electric Co Ltd Improvements in dynamo electric machines
GB1142591A (en) * 1966-05-26 1969-02-12 Gen Motors Ltd Permanent magnet electric motors
FR2033663A5 (en:Method) * 1969-02-25 1970-12-04 Jammet Jean
US3663851A (en) * 1970-09-21 1972-05-16 Electro Craft Corp D.c. motor
JPS51113102U (en:Method) * 1975-03-11 1976-09-13
DE2558958A1 (de) * 1975-12-29 1977-07-07 Siemens Ag Gleichstrommaschine

Also Published As

Publication number Publication date
JPS57173365A (en) 1982-10-25
DE3176775D1 (en) 1988-07-07
JPH0373230B2 (en:Method) 1991-11-21
AU7785281A (en) 1982-06-10
US4341969A (en) 1982-07-27
EP0053485A1 (en) 1982-06-09
EP0053485B1 (en) 1988-06-01
AU554972B2 (en) 1986-09-11

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Legal Events

Date Code Title Description
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