JPS57171269A - Rotating speed detecting device - Google Patents

Rotating speed detecting device

Info

Publication number
JPS57171269A
JPS57171269A JP56056726A JP5672681A JPS57171269A JP S57171269 A JPS57171269 A JP S57171269A JP 56056726 A JP56056726 A JP 56056726A JP 5672681 A JP5672681 A JP 5672681A JP S57171269 A JPS57171269 A JP S57171269A
Authority
JP
Japan
Prior art keywords
speed
detector
phase
rotating
zero
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
JP56056726A
Other languages
Japanese (ja)
Inventor
Shiro 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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP56056726A priority Critical patent/JPS57171269A/en
Publication of JPS57171269A publication Critical patent/JPS57171269A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

PURPOSE:To offer a highly reliable and simple speed detection, by detecting rotating direction, zero speed and phase at the zero speed through the detection of the frequency and the phase of the distorted wave generated by a rotating speed detecting device. CONSTITUTION:A rotating speed detector 1 has a rotor 8 which is equipped with not an electric winding but only a laminated steel core, and the reactance of a hollow core 9 thereof is several hundred times as high as that of the laminated section, so that there is almost no magnetic field. Unbalanced current which goes into this detector 1 is detected by a current detector 2, and is introduced into a control device 3. The device 2 convertes the unbalanced current into a pulse and gives it to a speed control device 4. The device 4 conducts speed contrl of a motor 6 by comparing the pulse wit a signal from a speed setter 5. The device supplies the detector 1 with 3-phase AC voltage of a power supply device. The device also detects speed feedback to the device 4, rotating direction, zero speed and position of a rotor, and then, it puts out the results. It is possible, by using this mechanism, to execute speed control of rotary equipments of all kinds.
JP56056726A 1981-04-15 1981-04-15 Rotating speed detecting device Pending JPS57171269A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56056726A JPS57171269A (en) 1981-04-15 1981-04-15 Rotating speed detecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56056726A JPS57171269A (en) 1981-04-15 1981-04-15 Rotating speed detecting device

Publications (1)

Publication Number Publication Date
JPS57171269A true JPS57171269A (en) 1982-10-21

Family

ID=13035494

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56056726A Pending JPS57171269A (en) 1981-04-15 1981-04-15 Rotating speed detecting device

Country Status (1)

Country Link
JP (1) JPS57171269A (en)

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