JPS56150988A - Brushless direct current motor - Google Patents

Brushless direct current motor

Info

Publication number
JPS56150988A
JPS56150988A JP5451380A JP5451380A JPS56150988A JP S56150988 A JPS56150988 A JP S56150988A JP 5451380 A JP5451380 A JP 5451380A JP 5451380 A JP5451380 A JP 5451380A JP S56150988 A JPS56150988 A JP S56150988A
Authority
JP
Japan
Prior art keywords
over
capacitor
positional detecting
switch
section
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
JP5451380A
Other languages
Japanese (ja)
Inventor
Makoto Goto
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP5451380A priority Critical patent/JPS56150988A/en
Publication of JPS56150988A publication Critical patent/JPS56150988A/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
    • H02P6/14—Electronic commutators

Landscapes

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

Abstract

PURPOSE:To inhibit the generation of inductance voltage by a method wherein a capacitor is mounted which charges and discharges electricity by fixed currents decided in a circuit shape in response to positional detecting signals, and the change- over of coils conducting by the terminal voltage is controlled. CONSTITUTION:A circuit which changes over and controls motor coils 8, 9 is formed by a positional detecting signal generating section 12, a conduction change- over section 13 and a speed setting section 14. A changing and discharging switch 27 consisting of constant-current sources 24, 25 and a switch 26 wired to positional detecting signals is mounted to the conduction change-over section 13 to control the charging and discharging of a capacitor 28, and transistors 34, 35 forming a differential circuit 36 are driven. Thus, since the switch 26 is changed over by the positional detecting signals, the capacitor 28 is charged and discharged by means of the current sources 24, 25 and the terminal voltage slowly changes as time goes by, the motor coils are smoothly changed over and controlled, and the variation of currents due to inductance voltage can be prevented effectively.
JP5451380A 1980-04-23 1980-04-23 Brushless direct current motor Pending JPS56150988A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5451380A JPS56150988A (en) 1980-04-23 1980-04-23 Brushless direct current motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5451380A JPS56150988A (en) 1980-04-23 1980-04-23 Brushless direct current motor

Publications (1)

Publication Number Publication Date
JPS56150988A true JPS56150988A (en) 1981-11-21

Family

ID=12972719

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5451380A Pending JPS56150988A (en) 1980-04-23 1980-04-23 Brushless direct current motor

Country Status (1)

Country Link
JP (1) JPS56150988A (en)

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