JPS57148260A - Detector for speed of motor - Google Patents

Detector for speed of motor

Info

Publication number
JPS57148260A
JPS57148260A JP3366681A JP3366681A JPS57148260A JP S57148260 A JPS57148260 A JP S57148260A JP 3366681 A JP3366681 A JP 3366681A JP 3366681 A JP3366681 A JP 3366681A JP S57148260 A JPS57148260 A JP S57148260A
Authority
JP
Japan
Prior art keywords
motor
signal
voltage
speed
computer
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
JP3366681A
Other languages
Japanese (ja)
Inventor
Yasuma Miyoshi
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.)
IHI Corp
Original Assignee
IHI Corp
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 IHI Corp filed Critical IHI Corp
Priority to JP3366681A priority Critical patent/JPS57148260A/en
Publication of JPS57148260A publication Critical patent/JPS57148260A/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)
  • Control Of Ac Motors In General (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

PURPOSE:To output a speed signal of a motor, by a method wherein an electric signal corresponding to a rotation speed of an AC motor is detected, and based on the detected signal, a given computation is performed. CONSTITUTION:If, through transmission of an arbitrary control voltage from a thyristor device 2, an AC motor 1 starts to run, a secondary frequency F2, corresponding to the rotation speed of the motor 1, is generated, and the frequency thereof is detected (4). The secondary is converted into a voltage signal V via a F/V converter 5 and is added to a computer 7. A value, into which a primary frequency F1 of the motor 1 at a slip S=1 is converted, or a voltage signal K is previously outputted from a voltage generator 6, and the signal K is also added to the computer 7. The computer 7 performs a computation based on said voltage signals V and K to output a voltage signal n as the comuting value. The signal n is an electric signal proportioning a real speed N of the motor 1.
JP3366681A 1981-03-09 1981-03-09 Detector for speed of motor Pending JPS57148260A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3366681A JPS57148260A (en) 1981-03-09 1981-03-09 Detector for speed of motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3366681A JPS57148260A (en) 1981-03-09 1981-03-09 Detector for speed of motor

Publications (1)

Publication Number Publication Date
JPS57148260A true JPS57148260A (en) 1982-09-13

Family

ID=12392775

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3366681A Pending JPS57148260A (en) 1981-03-09 1981-03-09 Detector for speed of motor

Country Status (1)

Country Link
JP (1) JPS57148260A (en)

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