JPS5754718A - Method of avoiding resonance of rotor supported by mangetic bearing - Google Patents

Method of avoiding resonance of rotor supported by mangetic bearing

Info

Publication number
JPS5754718A
JPS5754718A JP12810080A JP12810080A JPS5754718A JP S5754718 A JPS5754718 A JP S5754718A JP 12810080 A JP12810080 A JP 12810080A JP 12810080 A JP12810080 A JP 12810080A JP S5754718 A JPS5754718 A JP S5754718A
Authority
JP
Japan
Prior art keywords
magnetic
bearings
bearing
magnetic fluxes
rotor
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
JP12810080A
Other languages
Japanese (ja)
Other versions
JPS59731B2 (en
Inventor
Tsutomu Murakami
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.)
KOUKUU UCHIYUU GIJUTSU KENKIYUU SHIYOCHIYOU
National Aerospace Laboratory of Japan
Original Assignee
KOUKUU UCHIYUU GIJUTSU KENKIYUU SHIYOCHIYOU
National Aerospace Laboratory of Japan
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 KOUKUU UCHIYUU GIJUTSU KENKIYUU SHIYOCHIYOU, National Aerospace Laboratory of Japan filed Critical KOUKUU UCHIYUU GIJUTSU KENKIYUU SHIYOCHIYOU
Priority to JP12810080A priority Critical patent/JPS59731B2/en
Publication of JPS5754718A publication Critical patent/JPS5754718A/en
Publication of JPS59731B2 publication Critical patent/JPS59731B2/en
Expired 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
    • F16C32/0444—Details of devices to control the actuation of the electromagnets
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

PURPOSE: To avoid resonance, by superposing electrical currents flowing through electromagnetic coils including currents for vertical position control, with such currents that forces caused by two magnetic bearings act vertically symmetrically, to increases the radial ridigity of a shaft.
CONSTITUTION: The stator sections 2a, 2b of a first and a second magnetic bearings 1a, 1b are coupled to each other by a non-magnetic member. The rotor sections 4a, 4b of the bearings 1a, 1b are also coupled to each other by a non-magnetic member. The bearings 1a, 1b are arranged vertically symmetrically. Since the positional change of the rotor section 4a of the bearing 1a due to graviation or the like means the opposite positional change of the rotor section 4b of the other bearing 1b, magnetic fluxes ϕ3, ϕ3' for controlling the positions of the rotor sections 4a, 4b are set in an identical form as to the vertical direction. Electrical currents are superposed on electromagnetic coils 14a, 14b to generate vertically symmetric magnetic fluxes ϕc, ϕc' in addition to the former magnetic fluxes ϕ3, ϕ3'. Since the forces caused by the magnetic fluxes ϕc, ϕc' are vertically symmetric, the forces attract or repulse each other so that they are cancel each other. Therefore, they hardly influence the vertical position.
COPYRIGHT: (C)1982,JPO&Japio
JP12810080A 1980-09-17 1980-09-17 How to avoid resonance of magnetic bearing support rotating body Expired JPS59731B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12810080A JPS59731B2 (en) 1980-09-17 1980-09-17 How to avoid resonance of magnetic bearing support rotating body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12810080A JPS59731B2 (en) 1980-09-17 1980-09-17 How to avoid resonance of magnetic bearing support rotating body

Publications (2)

Publication Number Publication Date
JPS5754718A true JPS5754718A (en) 1982-04-01
JPS59731B2 JPS59731B2 (en) 1984-01-09

Family

ID=14976388

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12810080A Expired JPS59731B2 (en) 1980-09-17 1980-09-17 How to avoid resonance of magnetic bearing support rotating body

Country Status (1)

Country Link
JP (1) JPS59731B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5983829A (en) * 1982-11-02 1984-05-15 Seiko Instr & Electronics Ltd Low-power consumption radial electromagnet for magnetic bearing
US5140208A (en) * 1991-04-25 1992-08-18 Maglev Technology, Inc. Self-adjusting magnetic guidance system for levitated vehicle guideway
US20100026120A1 (en) * 2008-07-29 2010-02-04 Thales Magnetic centre-finding device with no magnet on the rotor and with small air gap

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5983829A (en) * 1982-11-02 1984-05-15 Seiko Instr & Electronics Ltd Low-power consumption radial electromagnet for magnetic bearing
JPH0314084B2 (en) * 1982-11-02 1991-02-26 Seiko Instr & Electronics
US5140208A (en) * 1991-04-25 1992-08-18 Maglev Technology, Inc. Self-adjusting magnetic guidance system for levitated vehicle guideway
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

Also Published As

Publication number Publication date
JPS59731B2 (en) 1984-01-09

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