JPS5797916A - Controlled magnetic bearing - Google Patents

Controlled magnetic bearing

Info

Publication number
JPS5797916A
JPS5797916A JP17208880A JP17208880A JPS5797916A JP S5797916 A JPS5797916 A JP S5797916A JP 17208880 A JP17208880 A JP 17208880A JP 17208880 A JP17208880 A JP 17208880A JP S5797916 A JPS5797916 A JP S5797916A
Authority
JP
Japan
Prior art keywords
circuits
whirl
rotational frequency
detection circuit
magnetic bearing
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
JP17208880A
Other languages
Japanese (ja)
Inventor
Yukiyoshi Okazaki
Yoshinobu Katae
Yoshiyuki Aoyama
Yoshiharu Yamaguchi
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.)
NSK Ltd
Original Assignee
NSK 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 NSK Ltd filed Critical NSK Ltd
Priority to JP17208880A priority Critical patent/JPS5797916A/en
Publication of JPS5797916A publication Critical patent/JPS5797916A/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
    • F16C32/0444—Details of devices to control the actuation of the electromagnets
    • F16C32/0451—Details of controllers, i.e. the units determining the power to be supplied, e.g. comparing elements, feedback arrangements with P.I.D. control

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

PURPOSE: To make power amplifiers compact, heighten the stiffness of a magnetic bearing for a high-speed rotary machine and stabilize the control of the bearing, by composing the control circuit of the magnetic bearing of a rotary shaft rotational frequency detection circuit and whirl component elimination circuits which operate on the basis of the detection signal of the detection circuit.
CONSTITUTION: The radial displacement of a rotary shaft 32 is detected by position detectors 40, 41, the output signals of which are compared with the position set signals of position setting circuits 45, 46 by comparator circuits 47, 48. The output signals of the comparator circuits 47, 48 are processed through compensation circuits 49, 50 and the band-pass filters 57, 58 and subtraction circuits 59, 60 of whirl component elimination circuits. Cutoff frequncy set signals produced by processing the output signal of the position detector 41 through a rotational frequency detection circuit 42 and converters 55, 56 are applied to the band-pass filters 57, 58 so that the filters send out only whirl components synchronized with the rotational frequency. The subtracters 59, 60 remove the whirl components. The outputs of the subtracters are applied to amplifiers 53, 54. According to this constitution, the amplifiers 53, 54 can be made compact.
COPYRIGHT: (C)1982,JPO&Japio
JP17208880A 1980-12-08 1980-12-08 Controlled magnetic bearing Pending JPS5797916A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17208880A JPS5797916A (en) 1980-12-08 1980-12-08 Controlled magnetic bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17208880A JPS5797916A (en) 1980-12-08 1980-12-08 Controlled magnetic bearing

Publications (1)

Publication Number Publication Date
JPS5797916A true JPS5797916A (en) 1982-06-17

Family

ID=15935314

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17208880A Pending JPS5797916A (en) 1980-12-08 1980-12-08 Controlled magnetic bearing

Country Status (1)

Country Link
JP (1) JPS5797916A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2536138A1 (en) * 1982-11-11 1984-05-18 Seiko Instr & Electronics MAGNETIC BEARING DEVICE OF THE CONTROL TYPE
JPS63285321A (en) * 1987-05-18 1988-11-22 Ebara Corp Method for preventing and controlling unbalanced vibration and synchronous interfering vibration
US4795927A (en) * 1986-05-02 1989-01-03 Mitsubishi Jukogyo Kabushiki Kaisha Control system for a magnetic type bearing
JPS6424727U (en) * 1987-08-03 1989-02-10
JPH0198708A (en) * 1987-10-07 1989-04-17 Ebara Res Co Ltd Radial magnetic bearing device
US4976177A (en) * 1986-11-13 1990-12-11 S.A.: Societe Europeenne De Propulsion Workpiece-carrier spindle assembly having magnetic bearings, and a device implementing such an assembly for a very high precision machine tool
US5312226A (en) * 1991-10-14 1994-05-17 Hitachi, Ltd. Turbo compressor and method of controlling the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5293852A (en) * 1975-12-24 1977-08-06 Europ Propulsion Syncronization interference compensator for magnetically suspended rotor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5293852A (en) * 1975-12-24 1977-08-06 Europ Propulsion Syncronization interference compensator for magnetically suspended rotor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2536138A1 (en) * 1982-11-11 1984-05-18 Seiko Instr & Electronics MAGNETIC BEARING DEVICE OF THE CONTROL TYPE
US4795927A (en) * 1986-05-02 1989-01-03 Mitsubishi Jukogyo Kabushiki Kaisha Control system for a magnetic type bearing
US4976177A (en) * 1986-11-13 1990-12-11 S.A.: Societe Europeenne De Propulsion Workpiece-carrier spindle assembly having magnetic bearings, and a device implementing such an assembly for a very high precision machine tool
JPS63285321A (en) * 1987-05-18 1988-11-22 Ebara Corp Method for preventing and controlling unbalanced vibration and synchronous interfering vibration
JPS6424727U (en) * 1987-08-03 1989-02-10
JPH0198708A (en) * 1987-10-07 1989-04-17 Ebara Res Co Ltd Radial magnetic bearing device
US5312226A (en) * 1991-10-14 1994-05-17 Hitachi, Ltd. Turbo compressor and method of controlling the same

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