JPS57145560A - Brushless motor - Google Patents

Brushless motor

Info

Publication number
JPS57145560A
JPS57145560A JP56029125A JP2912581A JPS57145560A JP S57145560 A JPS57145560 A JP S57145560A JP 56029125 A JP56029125 A JP 56029125A JP 2912581 A JP2912581 A JP 2912581A JP S57145560 A JPS57145560 A JP S57145560A
Authority
JP
Japan
Prior art keywords
current
stator coil
circuit
respective phases
motor driving
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
JP56029125A
Other languages
Japanese (ja)
Inventor
Akira Torisawa
Tatsuya Yanai
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP56029125A priority Critical patent/JPS57145560A/en
Publication of JPS57145560A publication Critical patent/JPS57145560A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors

Landscapes

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

Abstract

PURPOSE:To make a current at no load time to nearly zero and to contrive to attain energy-saving of a brushless motor by a method wherein an inverted current having current breaking time is applied to a stator coil when the direction of current is made to be changed over. CONSTITUTION:Output signals of rotor magnetic pole detecting elements, Hall elements (H) for example, provided corresponding to respective phases of the stator coil are applied to a coil voltage change-over circuit, and six kinds of control pulses are combined therein. The control pulses thereof are applied to the respective phases of a motor driving circuit two by two. While output of a frequency generator (F.G) is applied to a rotation control circuit, and is applied to the motor driving circuit after frequency thereof is converted into voltage. The inverted current having current breaking time is applied to the stator coil when the direction of current is to be changed over.
JP56029125A 1981-02-27 1981-02-27 Brushless motor Pending JPS57145560A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56029125A JPS57145560A (en) 1981-02-27 1981-02-27 Brushless motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56029125A JPS57145560A (en) 1981-02-27 1981-02-27 Brushless motor

Publications (1)

Publication Number Publication Date
JPS57145560A true JPS57145560A (en) 1982-09-08

Family

ID=12267575

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56029125A Pending JPS57145560A (en) 1981-02-27 1981-02-27 Brushless motor

Country Status (1)

Country Link
JP (1) JPS57145560A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5280414A (en) * 1975-12-26 1977-07-06 Hitachi Ltd Brushless motor
JPS5332317A (en) * 1976-09-06 1978-03-27 Sharp Corp Commutator-less electric motor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5280414A (en) * 1975-12-26 1977-07-06 Hitachi Ltd Brushless motor
JPS5332317A (en) * 1976-09-06 1978-03-27 Sharp Corp Commutator-less electric motor

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