JPS5615155A - Driving method of magnet-field type motor - Google Patents

Driving method of magnet-field type motor

Info

Publication number
JPS5615155A
JPS5615155A JP8924879A JP8924879A JPS5615155A JP S5615155 A JPS5615155 A JP S5615155A JP 8924879 A JP8924879 A JP 8924879A JP 8924879 A JP8924879 A JP 8924879A JP S5615155 A JPS5615155 A JP S5615155A
Authority
JP
Japan
Prior art keywords
brushes
motor
load conditions
magnets
neutral lines
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
JP8924879A
Other languages
Japanese (ja)
Inventor
Shingo Kato
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP8924879A priority Critical patent/JPS5615155A/en
Publication of JPS5615155A publication Critical patent/JPS5615155A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
    • H02K23/04—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having permanent magnet excitation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Direct Current Motors (AREA)
  • Dc Machiner (AREA)

Abstract

PURPOSE:To improve the speed characteristic of the motor, by providing plural pairs of brushes in prescribed positions as to the magnetically neutral lines of magnets and by switching the current supply brushes depending on load conditions. CONSTITUTION:An armature 2 is rotatably supported in the hollow portion of a field body 1 comprising plural permanent magnets 5 and arc-shaped yokes. The first pair of brushes 3A are provided on the magnetically neutral lines of the permanent magnets 5. The second pair of brushes 3B are provided in positions which are displaced from the magnetically neutral lines of the magnets 5 in the circumferential direction. Under such load conditions that the acceleration and deceleration of a motor are drastically effected, currents are caused to flow through only the first brushes 3A to increase the torque constant of the motor and shorten its rising and falling time. Under such load conditions that the fluctuation in the revolution speed of the motor is small, currents are caused to flow through both the first and the second brushes 3A, 3B to decrease the torque constant of the motor and heighten its maximum angular velocity.
JP8924879A 1979-07-16 1979-07-16 Driving method of magnet-field type motor Pending JPS5615155A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8924879A JPS5615155A (en) 1979-07-16 1979-07-16 Driving method of magnet-field type motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8924879A JPS5615155A (en) 1979-07-16 1979-07-16 Driving method of magnet-field type motor

Publications (1)

Publication Number Publication Date
JPS5615155A true JPS5615155A (en) 1981-02-13

Family

ID=13965447

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8924879A Pending JPS5615155A (en) 1979-07-16 1979-07-16 Driving method of magnet-field type motor

Country Status (1)

Country Link
JP (1) JPS5615155A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4454460A (en) * 1982-05-22 1984-06-12 Hitachi, Ltd. D.C. Rotary machine with interpole compensation
FR3011698A1 (en) * 2013-10-09 2015-04-10 Valeo Embrayages ELECTRIC ACTUATOR FOR VEHICLE TRANSMISSION SYSTEM

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4454460A (en) * 1982-05-22 1984-06-12 Hitachi, Ltd. D.C. Rotary machine with interpole compensation
FR3011698A1 (en) * 2013-10-09 2015-04-10 Valeo Embrayages ELECTRIC ACTUATOR FOR VEHICLE TRANSMISSION SYSTEM
EP2860869A1 (en) * 2013-10-09 2015-04-15 Valeo Embrayages Electric actuator for vehicle transmission system

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