JPS57135662A - Motor - Google Patents

Motor

Info

Publication number
JPS57135662A
JPS57135662A JP1968781A JP1968781A JPS57135662A JP S57135662 A JPS57135662 A JP S57135662A JP 1968781 A JP1968781 A JP 1968781A JP 1968781 A JP1968781 A JP 1968781A JP S57135662 A JPS57135662 A JP S57135662A
Authority
JP
Japan
Prior art keywords
teeth
motor
magnet
yoke
rotor
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
JP1968781A
Other languages
Japanese (ja)
Inventor
Norio Yano
Osamu Adachi
Keizo Sugita
Masaji Kumada
Masao Kito
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.)
Yaskawa Electric Corp
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
Yaskawa Electric Manufacturing 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 Nippon Telegraph and Telephone Corp, Yaskawa Electric Manufacturing Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP1968781A priority Critical patent/JPS57135662A/en
Publication of JPS57135662A publication Critical patent/JPS57135662A/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
    • H02K29/14—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with speed sensing devices

Abstract

PURPOSE:To reduce the size of a motor by adding an electromagnetic rotating speed detector unilizing the magnetic flux at part of a rotor magnet, thereby eliminating the necessity of providing teeth on the outer periphery of a rotor yoke. CONSTITUTION:A teeth 1' is provided at a rotor magnet 1, and a teeth 10' is provided at a detecting coil yoke 10 of the side of a stator coil 3 faced with the teeth 1'. In this structure, part of the magnetic flux from N pole on the lower surface of the magnet 1 flows from the teeth 1' to the teeth 10' as designated by an arrow, flows from a detecting coil yoke 10 to the S pole adjacent to the lower surface of the magnet 1, and returns through the rotor yoke to the original pole. Accordingly, the induced voltage at the detecting coil 9 becomes alternating current with 18 deg. of one period in the rotating operation of a motor, and the rotating speed of the motor is detected by the frequency of the inducted voltage of the alternating current.
JP1968781A 1981-02-13 1981-02-13 Motor Pending JPS57135662A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1968781A JPS57135662A (en) 1981-02-13 1981-02-13 Motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1968781A JPS57135662A (en) 1981-02-13 1981-02-13 Motor

Publications (1)

Publication Number Publication Date
JPS57135662A true JPS57135662A (en) 1982-08-21

Family

ID=12006144

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1968781A Pending JPS57135662A (en) 1981-02-13 1981-02-13 Motor

Country Status (1)

Country Link
JP (1) JPS57135662A (en)

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