JPS5646681A - Rotary speed control system - Google Patents

Rotary speed control system

Info

Publication number
JPS5646681A
JPS5646681A JP12294279A JP12294279A JPS5646681A JP S5646681 A JPS5646681 A JP S5646681A JP 12294279 A JP12294279 A JP 12294279A JP 12294279 A JP12294279 A JP 12294279A JP S5646681 A JPS5646681 A JP S5646681A
Authority
JP
Japan
Prior art keywords
control
hall
speed control
hall elements
control system
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
JP12294279A
Other languages
Japanese (ja)
Inventor
Masaaki Tamura
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 JP12294279A priority Critical patent/JPS5646681A/en
Publication of JPS5646681A publication Critical patent/JPS5646681A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/34—Modelling or simulation for control purposes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

PURPOSE:To design a simplification of the control system by a method wherein a speed control is made according to the time differences that a same magnet is passed from one side to other of at least two pieces of hall elements provided near magnetic poles of a brushlles DC motor. CONSTITUTION:In the brushless motor of video tape recorder or others, a rotor is made up of a permanent magnet 6, and hall elements 8-10 are provided near magnetic poles thereof. Further, the output of hall elements 8 is given to a lamp signal generator 11, the output of hall element 9 to a differential pulse generator 12, these outputs are sent to a sample hold circuit 13 to control a motor coil 7 through a filter amp 14. Accordingly, to perform the speed control by detecting the around speed between hall elemens 8 to 9 and sample hold the time difference, it is no need to add the specific rotary frequency generator, thus the control in a high precision can be made by the simple constitution.
JP12294279A 1979-09-25 1979-09-25 Rotary speed control system Pending JPS5646681A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12294279A JPS5646681A (en) 1979-09-25 1979-09-25 Rotary speed control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12294279A JPS5646681A (en) 1979-09-25 1979-09-25 Rotary speed control system

Publications (1)

Publication Number Publication Date
JPS5646681A true JPS5646681A (en) 1981-04-27

Family

ID=14848423

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12294279A Pending JPS5646681A (en) 1979-09-25 1979-09-25 Rotary speed control system

Country Status (1)

Country Link
JP (1) JPS5646681A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6077693A (en) * 1983-09-30 1985-05-02 Morita Mfg Co Ltd Controlling method of brushless motor
JPS63138897U (en) * 1987-03-03 1988-09-13

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6077693A (en) * 1983-09-30 1985-05-02 Morita Mfg Co Ltd Controlling method of brushless motor
JPH0552147B2 (en) * 1983-09-30 1993-08-04 Morita Mfg
JPS63138897U (en) * 1987-03-03 1988-09-13

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