JPS6419992A - Brushless motor - Google Patents

Brushless motor

Info

Publication number
JPS6419992A
JPS6419992A JP62175489A JP17548987A JPS6419992A JP S6419992 A JPS6419992 A JP S6419992A JP 62175489 A JP62175489 A JP 62175489A JP 17548987 A JP17548987 A JP 17548987A JP S6419992 A JPS6419992 A JP S6419992A
Authority
JP
Japan
Prior art keywords
phase
rotor
group
driving coils
respect
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
JP62175489A
Other languages
Japanese (ja)
Inventor
Minoru Matsuda
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan 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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP62175489A priority Critical patent/JPS6419992A/en
Publication of JPS6419992A publication Critical patent/JPS6419992A/en
Pending legal-status Critical Current

Links

Landscapes

  • Brushless Motors (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

PURPOSE:To reduce torque ripple and eliminate fluctuation of rotation of a rotor, when a group of five-phase driving coils are excited with a specific communication angle, by adding ternary higher harmonics having reverse phase with respect to basic phase with a ratio within a specific range. CONSTITUTION:A rotor magnet 2 magnetized to form pairs of magnetic poles is faced with a group of five-phase driving coils 8, then exciting current having electrical communication angle of 144 deg. is fed to the driving coil group 8 so as to rotary drive a rotor 1. Magnetic flux crossing with respective driving coils 8 contains ternary higher harmonics having reverse phase with respect to basic wave by 25-70%. Consequently, torque ripple can be halved and the performance can be improved when it is adapted in a video tape recorder.
JP62175489A 1987-07-14 1987-07-14 Brushless motor Pending JPS6419992A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62175489A JPS6419992A (en) 1987-07-14 1987-07-14 Brushless motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62175489A JPS6419992A (en) 1987-07-14 1987-07-14 Brushless motor

Publications (1)

Publication Number Publication Date
JPS6419992A true JPS6419992A (en) 1989-01-24

Family

ID=15996937

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62175489A Pending JPS6419992A (en) 1987-07-14 1987-07-14 Brushless motor

Country Status (1)

Country Link
JP (1) JPS6419992A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012120423A (en) * 2010-11-09 2012-06-21 Fuji Micro Kk Motor
CN111371350A (en) * 2020-03-30 2020-07-03 杨猛 Control method of full-magnetic-field direct-current motor system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012120423A (en) * 2010-11-09 2012-06-21 Fuji Micro Kk Motor
CN111371350A (en) * 2020-03-30 2020-07-03 杨猛 Control method of full-magnetic-field direct-current motor system

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