JPS6450790A - Driving method for synchronous motor - Google Patents

Driving method for synchronous motor

Info

Publication number
JPS6450790A
JPS6450790A JP62205144A JP20514487A JPS6450790A JP S6450790 A JPS6450790 A JP S6450790A JP 62205144 A JP62205144 A JP 62205144A JP 20514487 A JP20514487 A JP 20514487A JP S6450790 A JPS6450790 A JP S6450790A
Authority
JP
Japan
Prior art keywords
current
command
section
signal
phase
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
JP62205144A
Other languages
Japanese (ja)
Inventor
Noboru Iwamatsu
Yuichi Endo
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.)
Fanuc Corp
Original Assignee
Fanuc 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 Fanuc Corp filed Critical Fanuc Corp
Priority to JP62205144A priority Critical patent/JPS6450790A/en
Publication of JPS6450790A publication Critical patent/JPS6450790A/en
Pending legal-status Critical Current

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  • Control Of Ac Motors In General (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

PURPOSE:To relax magnetic saturation in a stator core and increase torque, by advancing the phase of current from a driving circuit, when the current from the driving circuit comes to rated current or higher. CONSTITUTION:Signal from a pulse encoder 6 is converted to speed signal and the position signal of a rotor by a speed detecting section 8 and a rotor position detecting section 7. By a torque command section 1, speed command VI and the speed signal are compared with each other, and the output of current command is generated. By a current command section 2, the current command of each phase is applied so that a power-factor may be 1 according to the position signal of the rotor. From a power amplifying section 3, current according to current command is applied to a servomotor 5. Besides, when one of the current values of respective phases ranges from rated current by approx. 1.5times to maximum control current, then the phase of the current of output generated from the power amplifying section 3 is advanced.
JP62205144A 1987-08-20 1987-08-20 Driving method for synchronous motor Pending JPS6450790A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62205144A JPS6450790A (en) 1987-08-20 1987-08-20 Driving method for synchronous motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62205144A JPS6450790A (en) 1987-08-20 1987-08-20 Driving method for synchronous motor

Publications (1)

Publication Number Publication Date
JPS6450790A true JPS6450790A (en) 1989-02-27

Family

ID=16502150

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62205144A Pending JPS6450790A (en) 1987-08-20 1987-08-20 Driving method for synchronous motor

Country Status (1)

Country Link
JP (1) JPS6450790A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03105229U (en) * 1990-02-13 1991-10-31
WO1997041634A1 (en) * 1996-04-26 1997-11-06 Fanuc Ltd Method for controlling current of ac servo motor
EP1473179A3 (en) * 2003-04-28 2013-04-03 Panasonic Corporation Driver of electric compressor
JP2013070570A (en) * 2011-09-26 2013-04-18 Toshiba Corp Semiconductor device and motor drive device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03105229U (en) * 1990-02-13 1991-10-31
WO1997041634A1 (en) * 1996-04-26 1997-11-06 Fanuc Ltd Method for controlling current of ac servo motor
EP1473179A3 (en) * 2003-04-28 2013-04-03 Panasonic Corporation Driver of electric compressor
JP2013070570A (en) * 2011-09-26 2013-04-18 Toshiba Corp Semiconductor device and motor drive device

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