JPS56150618A - Magnetic bearing - Google Patents

Magnetic bearing

Info

Publication number
JPS56150618A
JPS56150618A JP5319280A JP5319280A JPS56150618A JP S56150618 A JPS56150618 A JP S56150618A JP 5319280 A JP5319280 A JP 5319280A JP 5319280 A JP5319280 A JP 5319280A JP S56150618 A JPS56150618 A JP S56150618A
Authority
JP
Japan
Prior art keywords
speed
spindle
control
permanent magnets
signal
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.)
Pending
Application number
JP5319280A
Other languages
Japanese (ja)
Inventor
Masaharu Miki
Tadao Ishizawa
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments 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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP5319280A priority Critical patent/JPS56150618A/en
Publication of JPS56150618A publication Critical patent/JPS56150618A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0474—Active magnetic bearings for rotary movement
    • F16C32/0476—Active magnetic bearings for rotary movement with active support of one degree of freedom, e.g. axial magnetic bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0459—Details of the magnetic circuit
    • F16C32/0461—Details of the magnetic circuit of stationary parts of the magnetic circuit
    • F16C32/0465—Details of the magnetic circuit of stationary parts of the magnetic circuit with permanent magnets provided in the magnetic circuit of the electromagnets

Abstract

PURPOSE: To obtain the bearing small in size, durable for a high-speed rotation and inexpensive in the cost thereof by a method wherein magnetic circuit sections, provided in the bearing supporting a rotating body, and permanent magnets for detecting spidle speed, which are attached to the inside of the spindle, are provided to control the rotating body.
CONSTITUTION: The spindle 1 having rotary magnetic poles 2 is held on the central axis thereof in the movement of radial direction without any control by utilizing attracting forces generated by the permanent magnets 4 provided at the inside of fixed magnetic poles 3 while is stabilized in the movement of the axial direction thereof by control coils 5 obtaining a signal by a speed detecting coil 8. Since the rotating magnetic poles 2 are attracted to either upper or lower side upon starting and the speed signal is zero, the spindle is lifted off by utilizing a capacitor or the like to flow a current through the control coils 5. Thereafter, since the spindle 1 and the permanent magnets 7 accommodated therein are moved, fluxes penetrating through the speed detecting coil 8 are varied and the speed signal becomes to be generated, thus, a feedback control is effected by this signal and the high-speed rotation is enabled accordingly.
COPYRIGHT: (C)1981,JPO&Japio
JP5319280A 1980-04-22 1980-04-22 Magnetic bearing Pending JPS56150618A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5319280A JPS56150618A (en) 1980-04-22 1980-04-22 Magnetic bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5319280A JPS56150618A (en) 1980-04-22 1980-04-22 Magnetic bearing

Publications (1)

Publication Number Publication Date
JPS56150618A true JPS56150618A (en) 1981-11-21

Family

ID=12936003

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5319280A Pending JPS56150618A (en) 1980-04-22 1980-04-22 Magnetic bearing

Country Status (1)

Country Link
JP (1) JPS56150618A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4597613A (en) * 1983-09-30 1986-07-01 Kabushiki Kaisha Toshiba Electromagnetic bearing
US6121704A (en) * 1997-07-30 2000-09-19 Nsk Ltd. Magnetic bearing
KR20030017239A (en) * 2001-08-24 2003-03-03 강귀병 Joint
US20100026120A1 (en) * 2008-07-29 2010-02-04 Thales Magnetic centre-finding device with no magnet on the rotor and with small air gap
CN115341312A (en) * 2021-05-15 2022-11-15 尚科纺织企业工业及贸易公司 Apparatus and method for winding and twisting fiber material in ring spinning or twisting machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4597613A (en) * 1983-09-30 1986-07-01 Kabushiki Kaisha Toshiba Electromagnetic bearing
US6121704A (en) * 1997-07-30 2000-09-19 Nsk Ltd. Magnetic bearing
KR20030017239A (en) * 2001-08-24 2003-03-03 강귀병 Joint
US20100026120A1 (en) * 2008-07-29 2010-02-04 Thales Magnetic centre-finding device with no magnet on the rotor and with small air gap
US8378542B2 (en) * 2008-07-29 2013-02-19 Thales Magnetic centre-finding device with no magnet on the rotor and with small air gap
CN115341312A (en) * 2021-05-15 2022-11-15 尚科纺织企业工业及贸易公司 Apparatus and method for winding and twisting fiber material in ring spinning or twisting machine
CN115341312B (en) * 2021-05-15 2024-02-09 尚科纺织企业工业及贸易公司 Device and method for winding and twisting fibrous material in a ring spinning or twisting machine

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