JPS57113790A - Driving device for dc brushless motor - Google Patents

Driving device for dc brushless motor

Info

Publication number
JPS57113790A
JPS57113790A JP56000550A JP55081A JPS57113790A JP S57113790 A JPS57113790 A JP S57113790A JP 56000550 A JP56000550 A JP 56000550A JP 55081 A JP55081 A JP 55081A JP S57113790 A JPS57113790 A JP S57113790A
Authority
JP
Japan
Prior art keywords
exciting currents
armature coils
rotor
bgm
magnitude
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.)
Granted
Application number
JP56000550A
Other languages
Japanese (ja)
Other versions
JPS634438B2 (en
Inventor
Susumu Oota
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Electric Corp
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Electric Corp, Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Electric Corp
Priority to JP56000550A priority Critical patent/JPS57113790A/en
Publication of JPS57113790A publication Critical patent/JPS57113790A/en
Publication of JPS634438B2 publication Critical patent/JPS634438B2/ja
Granted 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
    • H02P6/10—Arrangements for controlling torque ripple, e.g. providing reduced torque ripple

Abstract

PURPOSE:To eliminate torque variation in a DC brushless motor by digitally operating the relation of the relative position between the magnetic pole of a rotor and armature coils and the magnitude of exciting currents for the generation of predetermined torques for each armature coil. CONSTITUTION:An arithmetic circuit 4 calculates the relation of the relative position between the magnetic pole of a rotor LM and armature coils L1, L2 from the rotation angle detection output of the rotor LM in a shaft encoder 2 and reads the value of magnetic flux density Bgm in the positions of the armature coils L1, L2 from a memory circuit 3. Next, the magnitude of exciting currents ID1, ID2 required for generating desired torques T1, T2 shown in graph (b) is calculated by referring to the value of the magnetic flux density Bgm and that of a control signal Ea and the exciting currents are sent to power amplifiers 5, 6. The power amplifiers 5, 6 perform pulse width modulation for the exciting currents ID1, ID2 in accordance with the digital signal supplied form the arithmetic circuit 4 to supply the exciting currents ID1, ID2 to the armature coils L1, L2.
JP56000550A 1981-01-06 1981-01-06 Driving device for dc brushless motor Granted JPS57113790A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56000550A JPS57113790A (en) 1981-01-06 1981-01-06 Driving device for dc brushless motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56000550A JPS57113790A (en) 1981-01-06 1981-01-06 Driving device for dc brushless motor

Publications (2)

Publication Number Publication Date
JPS57113790A true JPS57113790A (en) 1982-07-15
JPS634438B2 JPS634438B2 (en) 1988-01-28

Family

ID=11476825

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56000550A Granted JPS57113790A (en) 1981-01-06 1981-01-06 Driving device for dc brushless motor

Country Status (1)

Country Link
JP (1) JPS57113790A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55109188A (en) * 1979-02-13 1980-08-22 Sony Corp Brushless dc motor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55109188A (en) * 1979-02-13 1980-08-22 Sony Corp Brushless dc motor

Also Published As

Publication number Publication date
JPS634438B2 (en) 1988-01-28

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