JPS5729953A - Rotary speed detector - Google Patents

Rotary speed detector

Info

Publication number
JPS5729953A
JPS5729953A JP10559080A JP10559080A JPS5729953A JP S5729953 A JPS5729953 A JP S5729953A JP 10559080 A JP10559080 A JP 10559080A JP 10559080 A JP10559080 A JP 10559080A JP S5729953 A JPS5729953 A JP S5729953A
Authority
JP
Japan
Prior art keywords
detected
rotary speed
diameter
electromagnetic sensor
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.)
Pending
Application number
JP10559080A
Other languages
Japanese (ja)
Inventor
Hiroya Kono
Mitsukane Inagaki
Makoto Ono
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.)
Toyota Industries Corp
Original Assignee
Toyoda Automatic Loom Works 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 Toyoda Automatic Loom Works Ltd filed Critical Toyoda Automatic Loom Works Ltd
Priority to JP10559080A priority Critical patent/JPS5729953A/en
Publication of JPS5729953A publication Critical patent/JPS5729953A/en
Pending 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
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/488—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by variable reluctance detectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

PURPOSE:To elevate a rotary speed detecting sensitivity of an electromagnetic sensor, by constituting so that a movement locus width of the end of a rotational frequency detecting part, a maximum distance between a part to be detected and a magnet of the electromagnetic sensor, etc. are set to prescribed times as large as the diameter of the end of the magnet. CONSTITUTION:On the end of a rotary shaft 4 is provided a part 9 to be detected, having a movement locus width l1, and the density of a magnetic flux is varied in accordance with a relative position of the part to be detected 9 and a maget 11 of the end diameter (d) of an electromagnetic sensor 10. In accordance with this variation, voltage which is generated in a cylindrical coil 12 of the sensor 10 is detected, and a rotary speed of the rotary shaft 4 is measured. When this width l1 is set to 0.3-0.8 times as wide as the diameter (d) and also a maximum distance l2 between the part to be detected 9 and the magnet 11 is selected as 0.9-1.5times as long as the diameter (d), the optimum condition is satisfied, and the rotary speed detecting accuracy by the electromagnetic sensor is elevated.
JP10559080A 1980-07-31 1980-07-31 Rotary speed detector Pending JPS5729953A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10559080A JPS5729953A (en) 1980-07-31 1980-07-31 Rotary speed detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10559080A JPS5729953A (en) 1980-07-31 1980-07-31 Rotary speed detector

Publications (1)

Publication Number Publication Date
JPS5729953A true JPS5729953A (en) 1982-02-18

Family

ID=14411706

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10559080A Pending JPS5729953A (en) 1980-07-31 1980-07-31 Rotary speed detector

Country Status (1)

Country Link
JP (1) JPS5729953A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11002280B2 (en) * 2017-07-23 2021-05-11 Adam Esberger Method and system for monitoring moving elements

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11002280B2 (en) * 2017-07-23 2021-05-11 Adam Esberger Method and system for monitoring moving elements

Similar Documents

Publication Publication Date Title
JPS5772008A (en) Position sensor
JPS55134359A (en) Detector of rotation speed of turbocharger
US4439728A (en) Motion sensor utilizing eddy currents
JPS63127163A (en) Speed and acceleration detector
JPS57146164A (en) Speed detecting device for disk type motor
SE8500053D0 (en) LEVEL SOURCE WITH RADIOACTIVE CELL
JPS55156810A (en) Displacement detector
JPS5729953A (en) Rotary speed detector
JPS57152363A (en) Detector for displacement rate of ram in die casting machine
JPS5682443A (en) Transformation rate measuring apparatus of steel material
JPS57203913A (en) Rotation detector
JPS55135711A (en) Flow meter using composite magnetic material for sensor
JPS5772009A (en) Sensor for rotating angle
SU696369A1 (en) Device for electromagnetic inspection of mechanical properties of moving ferromagnetic materials
JPS5757204A (en) Method of measuring thickness of film formed on surface of ferromagnetic substance
JPS5783150A (en) Commutatorless motor
GB1493900A (en) Electromagnetic speed sensor
JPS5515047A (en) Moving point detection method
JPS5657956A (en) Revolution detector
JPS5442612A (en) Electronic rotor
SU739422A1 (en) Device for measuring low dc current
SU729708A1 (en) Contact-free meter of electric machine brush position
RU2000574C1 (en) Rotation parameter sensor
JPS5672707A (en) Position controller
JPS566179A (en) Body detector