JPS55127874A - Neutral point adjusting method for motor - Google Patents

Neutral point adjusting method for motor

Info

Publication number
JPS55127874A
JPS55127874A JP3528779A JP3528779A JPS55127874A JP S55127874 A JPS55127874 A JP S55127874A JP 3528779 A JP3528779 A JP 3528779A JP 3528779 A JP3528779 A JP 3528779A JP S55127874 A JPS55127874 A JP S55127874A
Authority
JP
Japan
Prior art keywords
detecting
magnetization
motor
neutral point
magnet
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
JP3528779A
Other languages
Japanese (ja)
Inventor
Tsunehiro Maruo
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP3528779A priority Critical patent/JPS55127874A/en
Publication of JPS55127874A publication Critical patent/JPS55127874A/en
Pending legal-status Critical Current

Links

Landscapes

  • Brushless Motors (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

PURPOSE: To enable electrical adjustment of a neutral point of a motor and to reduce the adjusting process of the neutral point by remagnetizing a magnet for rotary position detection with a magnetization signal, changed in phase in a rotary position detecting signal.
CONSTITUTION: A rotary point detecting signal b obtained from a Hall element 15 opposing to a magnet 13 to be used for rotary position detection and a detecting output a corresponding to a motor driving current obtained from a current detecting circuit 22, which is connected to a power source of the motor, are sent to a neutral point discriminating circuit 23. Then an increase or a decrease of the motor driving current (corresponding to the detecting output a) at the time when the magnetizing position of the position detecting magnet 13 is changed in accordance with the above-mentioned magnetization signal by a magnetization circuit 24 and a magnetization head 20. Then the change of the magnetization point of the position detecting magnet 13 is suspended when the motor driving current dropped to the minimum, i.e. when the detecting output a became the smallest.
COPYRIGHT: (C)1980,JPO&Japio
JP3528779A 1979-03-26 1979-03-26 Neutral point adjusting method for motor Pending JPS55127874A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3528779A JPS55127874A (en) 1979-03-26 1979-03-26 Neutral point adjusting method for motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3528779A JPS55127874A (en) 1979-03-26 1979-03-26 Neutral point adjusting method for motor

Publications (1)

Publication Number Publication Date
JPS55127874A true JPS55127874A (en) 1980-10-03

Family

ID=12437549

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3528779A Pending JPS55127874A (en) 1979-03-26 1979-03-26 Neutral point adjusting method for motor

Country Status (1)

Country Link
JP (1) JPS55127874A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS622213U (en) * 1985-06-20 1987-01-08
JPS625612U (en) * 1985-06-25 1987-01-14
JPS62149106A (en) * 1985-12-23 1987-07-03 Yamauchi Rubber Ind Co Ltd Magnetizing apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS622213U (en) * 1985-06-20 1987-01-08
JPS625612U (en) * 1985-06-25 1987-01-14
JPS62149106A (en) * 1985-12-23 1987-07-03 Yamauchi Rubber Ind Co Ltd Magnetizing apparatus
JPH0439209B2 (en) * 1985-12-23 1992-06-26

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