JPS561761A - Brushless motor - Google Patents

Brushless motor

Info

Publication number
JPS561761A
JPS561761A JP7735179A JP7735179A JPS561761A JP S561761 A JPS561761 A JP S561761A JP 7735179 A JP7735179 A JP 7735179A JP 7735179 A JP7735179 A JP 7735179A JP S561761 A JPS561761 A JP S561761A
Authority
JP
Japan
Prior art keywords
position detection
identification
rotation
light emitting
light
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
JP7735179A
Other languages
Japanese (ja)
Inventor
Hiroshi Mizuguchi
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 JP7735179A priority Critical patent/JPS561761A/en
Publication of JPS561761A publication Critical patent/JPS561761A/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
    • H02K29/10—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using light effect devices

Landscapes

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

Abstract

PURPOSE:To obtain the signal for driving the stator coil and the rotation speed detection signal with a simple construction in combination of the identification track for specific rotary position detection and two or more kinds of position detection signals from the light emitting element and the light receiving element. CONSTITUTION:The stainless rotation identification plate 6 having two kind of rotational position identification tracks 6a and 6b provided with a stripe adapted to reflect and absorb light is provided on the rotor frame 3. The light emitting diode and the phototransistors 13 and 14 are mounted at the position on the substrate 11 provided on the stator frame side facing the rotation identification tracks 6a and 6b. The light from the light emitting diode 12 after reflected on the rotation identification tracks 6a and 6b is received with the phototransistors 13 and 17 whereby the position detection signal different in the phase by a fixed electrical angle, for example, 90 deg. is obtained. With the position detection signal, the stator coils 10a-10d are energized while respective position detection signals are combined to obtain the rotation speed signal with a high frequency.
JP7735179A 1979-06-19 1979-06-19 Brushless motor Pending JPS561761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7735179A JPS561761A (en) 1979-06-19 1979-06-19 Brushless motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7735179A JPS561761A (en) 1979-06-19 1979-06-19 Brushless motor

Publications (1)

Publication Number Publication Date
JPS561761A true JPS561761A (en) 1981-01-09

Family

ID=13631483

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7735179A Pending JPS561761A (en) 1979-06-19 1979-06-19 Brushless motor

Country Status (1)

Country Link
JP (1) JPS561761A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01101171U (en) * 1987-12-25 1989-07-07

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5131710B1 (en) * 1971-07-15 1976-09-08

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5131710B1 (en) * 1971-07-15 1976-09-08

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01101171U (en) * 1987-12-25 1989-07-07

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