JPS57182172A - Detector for speed of revolution - Google Patents

Detector for speed of revolution

Info

Publication number
JPS57182172A
JPS57182172A JP6731381A JP6731381A JPS57182172A JP S57182172 A JPS57182172 A JP S57182172A JP 6731381 A JP6731381 A JP 6731381A JP 6731381 A JP6731381 A JP 6731381A JP S57182172 A JPS57182172 A JP S57182172A
Authority
JP
Japan
Prior art keywords
pole
angle
rotor
beta
revolution
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
JP6731381A
Other languages
Japanese (ja)
Other versions
JPS615099B2 (en
Inventor
Norio Kawamura
Takaaki Okada
Koichi Matsuda
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Fuji Electric Manufacturing 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 Fuji Electric Co Ltd, Fuji Electric Manufacturing Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP6731381A priority Critical patent/JPS57182172A/en
Publication of JPS57182172A publication Critical patent/JPS57182172A/en
Publication of JPS615099B2 publication Critical patent/JPS615099B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/46—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring amplitude of generated current or voltage
    • G01P3/465—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring amplitude of generated current or voltage by using dynamo-electro tachometers or electric generator

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

PURPOSE:To detect the speed of revolution during one revolution as a DC voltage in a wide range of an angle of 360 deg., by using a two-pole rotor of which the width of one polar arc is made narrower than the other, and a stator of which the circular core is wound with a winding except for a part thereof. CONSTITUTION:In a field rotor 2 formed of a permanent magnet, a magnetic pole 2b magnetized to be an N pole is projected from the outer periphery of a disc-shaped magnetic pole 2a constituting an S pole. The polar arc of the projected pole 2b is selected to be as small as possible and the center angle thereof is beta deg.. A stator 3 surrounding the rotor 2 concentrically has a circular core 3a which is wound uniformly with a coil 3b except for a part of its circumference forming an angle alpha deg.. The angle alpha deg. is slightly larger than the angle beta deg. and a magnetic flux formed by the magnetic pole 2b is in interlinkage to a coil 3b within the range of an angle of 360 deg.-alpha deg.-beta deg. (about 300 deg.). Therefore, a positive DC voltage corresponding to an angular speed is obtained between terminals A and B within this range.
JP6731381A 1981-05-02 1981-05-02 Detector for speed of revolution Granted JPS57182172A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6731381A JPS57182172A (en) 1981-05-02 1981-05-02 Detector for speed of revolution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6731381A JPS57182172A (en) 1981-05-02 1981-05-02 Detector for speed of revolution

Publications (2)

Publication Number Publication Date
JPS57182172A true JPS57182172A (en) 1982-11-09
JPS615099B2 JPS615099B2 (en) 1986-02-15

Family

ID=13341401

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6731381A Granted JPS57182172A (en) 1981-05-02 1981-05-02 Detector for speed of revolution

Country Status (1)

Country Link
JP (1) JPS57182172A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0214385A2 (en) * 1985-09-09 1987-03-18 Hübner Elektromaschinen AG Brushless induction machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0214385A2 (en) * 1985-09-09 1987-03-18 Hübner Elektromaschinen AG Brushless induction machine
EP0214385A3 (en) * 1985-09-09 1987-12-09 Hübner Elektromaschinen AG Brushless induction machine

Also Published As

Publication number Publication date
JPS615099B2 (en) 1986-02-15

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