JPS55487A - Speed detector for miniature dc electric motor - Google Patents

Speed detector for miniature dc electric motor

Info

Publication number
JPS55487A
JPS55487A JP5211079A JP5211079A JPS55487A JP S55487 A JPS55487 A JP S55487A JP 5211079 A JP5211079 A JP 5211079A JP 5211079 A JP5211079 A JP 5211079A JP S55487 A JPS55487 A JP S55487A
Authority
JP
Japan
Prior art keywords
twice
armature
speed
miniature
armature core
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
JP5211079A
Other languages
Japanese (ja)
Inventor
Yoshio Kanagu
Tsunemi Mitsui
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 JP5211079A priority Critical patent/JPS55487A/en
Publication of JPS55487A publication Critical patent/JPS55487A/en
Pending legal-status Critical Current

Links

Landscapes

  • Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

PURPOSE: To detect the speed stably with the use of a simple and small construction by detecting the leak magnetic flux through blades of the same or twice number as that of armature slots of a magnetic member which is made integral with an armature core.
CONSTITUTION: By the actions of the blades 6 of the number twice that of the slots of a magnetic material which are made integral with an armature core 8, the leak magnetic flux when the armature core 8 is rotating is amplified so that it is stabilized without influencing the reaction of a rotary armature 2. As a result, the speed signal waveforms, which are amplified in a frequency corresponding to the twice of the speed, are detected through the detecting coils 5a and 5b which are wound in opposite directions upon the N and S poles of a stator 1.
COPYRIGHT: (C)1980,JPO&Japio
JP5211079A 1979-04-26 1979-04-26 Speed detector for miniature dc electric motor Pending JPS55487A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5211079A JPS55487A (en) 1979-04-26 1979-04-26 Speed detector for miniature dc electric motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5211079A JPS55487A (en) 1979-04-26 1979-04-26 Speed detector for miniature dc electric motor

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP49055875A Division JPS5749868B2 (en) 1973-10-26 1974-05-17

Publications (1)

Publication Number Publication Date
JPS55487A true JPS55487A (en) 1980-01-05

Family

ID=12905715

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5211079A Pending JPS55487A (en) 1979-04-26 1979-04-26 Speed detector for miniature dc electric motor

Country Status (1)

Country Link
JP (1) JPS55487A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63265546A (en) * 1987-04-22 1988-11-02 Anritsu Corp Rotation detector for motor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4919206B1 (en) * 1968-11-13 1974-05-16

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4919206B1 (en) * 1968-11-13 1974-05-16

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63265546A (en) * 1987-04-22 1988-11-02 Anritsu Corp Rotation detector for motor

Similar Documents

Publication Publication Date Title
JPS55162866A (en) Rotational speed signal detector
JPS57146164A (en) Speed detecting device for disk type motor
JPS5561265A (en) High speed generator
JPS5229917A (en) Detection circuit for position of rotor in commutatorless motor
JPS55487A (en) Speed detector for miniature dc electric motor
JPS5265806A (en) Frequency generator
JPS5513647A (en) Motor with tacho-generator
JPS54717A (en) Motor
JPS5239105A (en) Armature winding of ac rotary machine
JPS55100051A (en) Rotary electric machine with speed generator
JPS54113018A (en) Dc brushless motor
JPS5691667A (en) Small motor containing frequency generator
JPS5485310A (en) Motor
JPS54158618A (en) Revolving speed signal detector
JPS562566A (en) Detecting method for rotation of motor
JPS5367819A (en) Poled motor
JPS52123672A (en) Rotary detector
JPS52144715A (en) Cover for reinforing ring-shaped magnet
JPS54158616A (en) Revolving speed signal detector
JPS5681072A (en) Brushless dc motor
JPS5532481A (en) Structure of motor
JPS5372108A (en) Permanent magnet type electric rotary machine
JPS5392410A (en) Magnet rotor
JPS5785564A (en) Dc brushless motor
JPS5429008A (en) Rotational speed-rotor position detector for dc commutatorless motor