JPS5646680A - Brushless motor driving system - Google Patents

Brushless motor driving system

Info

Publication number
JPS5646680A
JPS5646680A JP12100679A JP12100679A JPS5646680A JP S5646680 A JPS5646680 A JP S5646680A JP 12100679 A JP12100679 A JP 12100679A JP 12100679 A JP12100679 A JP 12100679A JP S5646680 A JPS5646680 A JP S5646680A
Authority
JP
Japan
Prior art keywords
circuit
control
induction voltage
pulse
switching circuit
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
JP12100679A
Other languages
Japanese (ja)
Inventor
Toshiaki Hosokawa
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.)
Yoshida Dental Mfg Co Ltd
Original Assignee
Yoshida Dental Mfg 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 Yoshida Dental Mfg Co Ltd filed Critical Yoshida Dental Mfg Co Ltd
Priority to JP12100679A priority Critical patent/JPS5646680A/en
Publication of JPS5646680A publication Critical patent/JPS5646680A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/14—Electronic commutators
    • H02P6/16—Circuit arrangements for detecting position
    • H02P6/18—Circuit arrangements for detecting position without separate position detecting elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

PURPOSE:To make it possible to control a definite torque by a simple construction by a method wherein it starts with an open loop at the starting time, after a certain degree of the induction voltage is generated in a stator wiring, the motor speed is detected from the induction voltage, and controlled with a closed loop. CONSTITUTION:A signal of a starting pulse oscillator is given to a switching circuit 8 through a pulse distribution circuit 7. On the other hand, the induction voltage at stator wirings 5A-5D are input to a wave form transdurcing circuit 13 through a filter circuit 10, along with it is given to a switching circuit 8, gaining a rotary position pulse, the switching circuit is controlled by the output of a speed detection circuit 11. Further, at the starting time, a pulse in a distributor 7 is given to a motor driving circuit 9 to control by the open loop control, after the starting, the switching circuit 8 is switched to a rotor speed is gained from the induction voltage signal of the stator wiring to control by the closed loop. Accordingly, the control can be made not required a complexed position detector, it can made be made by the simple contruction.
JP12100679A 1979-09-20 1979-09-20 Brushless motor driving system Pending JPS5646680A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12100679A JPS5646680A (en) 1979-09-20 1979-09-20 Brushless motor driving system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12100679A JPS5646680A (en) 1979-09-20 1979-09-20 Brushless motor driving system

Publications (1)

Publication Number Publication Date
JPS5646680A true JPS5646680A (en) 1981-04-27

Family

ID=14800447

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12100679A Pending JPS5646680A (en) 1979-09-20 1979-09-20 Brushless motor driving system

Country Status (1)

Country Link
JP (1) JPS5646680A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4495450A (en) * 1982-12-29 1985-01-22 Sanyo Electric Co., Ltd. Control device for brushless motor
EP0154863A2 (en) * 1984-02-24 1985-09-18 Hitachi, Ltd. Apparatus for driving polyphase brushless motor
US4631459A (en) * 1984-12-25 1986-12-23 Matsushita Electric Industrial Co., Ltd. Brushless DC motor
US4743815A (en) * 1987-09-01 1988-05-10 Emerson Electric Co. Brushless permanent magnet motor system
EP0578475A2 (en) * 1992-07-08 1994-01-12 Matsushita Electric Industrial Co., Ltd. Motor control apparatus
US6339303B1 (en) 2000-03-31 2002-01-15 International Business Machines Corporation System, method, and program product for controlling communication of disk drive motor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5280414A (en) * 1975-12-26 1977-07-06 Hitachi Ltd Brushless motor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5280414A (en) * 1975-12-26 1977-07-06 Hitachi Ltd Brushless motor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4495450A (en) * 1982-12-29 1985-01-22 Sanyo Electric Co., Ltd. Control device for brushless motor
EP0154863A2 (en) * 1984-02-24 1985-09-18 Hitachi, Ltd. Apparatus for driving polyphase brushless motor
US4631459A (en) * 1984-12-25 1986-12-23 Matsushita Electric Industrial Co., Ltd. Brushless DC motor
US4743815A (en) * 1987-09-01 1988-05-10 Emerson Electric Co. Brushless permanent magnet motor system
EP0578475A2 (en) * 1992-07-08 1994-01-12 Matsushita Electric Industrial Co., Ltd. Motor control apparatus
EP0578475A3 (en) * 1992-07-08 1994-09-07 Matsushita Electric Ind Co Ltd Motor control apparatus
US5481641A (en) * 1992-07-08 1996-01-02 Matsushita Electric Industrial Co., Ltd. Motor control apparatus
US6339303B1 (en) 2000-03-31 2002-01-15 International Business Machines Corporation System, method, and program product for controlling communication of disk drive motor

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