KR920005448A - Brushless DC motor drive without rotor position detector - Google Patents

Brushless DC motor drive without rotor position detector Download PDF

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Publication number
KR920005448A
KR920005448A KR1019900013722A KR900013722A KR920005448A KR 920005448 A KR920005448 A KR 920005448A KR 1019900013722 A KR1019900013722 A KR 1019900013722A KR 900013722 A KR900013722 A KR 900013722A KR 920005448 A KR920005448 A KR 920005448A
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KR
South Korea
Prior art keywords
phase
vcom
turned
voltage
common voltage
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Application number
KR1019900013722A
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Korean (ko)
Inventor
민병훈
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이헌조
주식회사 금성사
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Priority to KR1019900013722A priority Critical patent/KR920005448A/en
Publication of KR920005448A publication Critical patent/KR920005448A/en

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Abstract

내용 없음No content

Description

회전자 위치검출기가 없는 브러쉬 리스 직류모터 구동방식Brushless DC motor drive without rotor position detector

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명에 따른 회전자 위치검출기가 없는 브러쉬리스 직류모터 구동회로 블럭도.1 is a block diagram of a brushless DC motor driving circuit without a rotor position detector according to the present invention.

제2도는 본 발명에 따른 속도검출부의 구성도.2 is a block diagram of a speed detection unit according to the present invention.

Claims (2)

각 상코일(LA)(LB)(LC) 을 3상 Y결선하고, 파워트랜지스터(TRA)(TRB)(TRC)를 통해 상기 각 상코일(LA)(LB)(LC)의 통전제어를 하여 구동시키도록 한 회전자 위치 검출기가 없는 브러쉬 리스직류모터 구동제어 방식에 있어서, 상기 각상코일(LA)(LB)(LC)의 역기전력인 각 상전압(VA)(VB)(VC)과 공통전압(Vcom)을 각기 비교기(CP1)(CP2)(CP3)를 통해 비교한 값(a)(b)(c) 및 속도 검출기(1)의 출력을 파형정형부(2)를 통해 파형정형한 속도검출신호(FG)를 마이컴(3)에서 읽어들여 상기 속도검출신호(FG)의 라이징애지시, 상기 상전압(VA)이 공통전압(Vcom)보다 작고(a=“H”), 상기 상전압(VB)이 공통전압(Vcom)보다 작고(b=“L”)경우에는 상기 파워트랜지스터(TRA)를 온 시킴과 아울러 상기 파워트랜지스터(TRB)(TRC)를 오프시키며, 상기 상전압(VA)이 공통전압(Vcom)보다 작고(a=“H”), 상기 상전압(VB)이 공통전압(Vcom)보다 작고(a=“L”)경우에는 상기 파워트랜지스터(TRB)를 온시킴과 아울러 상기 파워트랜지스터(TRA)(TAB)를 오프시키도록 하며, 상기 상전압(VA)이 공통전압(Vcom)보다 크고(a=“L”), 상기 상전압(VB)이 공통전압(Vcom)보다 작은 (b="H")경우에는 상기 파워트랜지스터(TRC)를 오프시키며, 상기 과정을 연속적으로 반복하면서 각 상코일(LA)(LB)(LC)의 통전제어를 하여 모터의 회전자계를 발생시키고, 상기 속도검출신호(FG)의 라이징애지시 상기 상전압(VA)(VB)이 모두 공통전압(Vcom)보다 큰 (a=b=“L”)경우에는 비상사태를 판별하여 상기 파워트랜지스터(TRA)(TRB)(TRC)를 모두 오프시켜 모터를 정지시키도록 제어하는 것을 특징으로 하는 회전자 위치 검출기가 없는 브러쉬 리스 직류 모터 구동방식.Each phase coil (L A ) (L B ) (L C ) is 3-phase Y-connected, and each phase coil (L A ) (L B ) through the power transistors TR A (TR B ) (TR C ) In a brushless DC motor drive control method without a rotor position detector configured to drive (L C ) through energization control, each phase voltage that is the counter electromotive force of the respective coils L A (L B ) (L C ) ( A ) (b) (c) and speed detector (1) comparing (V A ) (V B ) (V C ) and common voltage (Vcom) with comparators (CP1) (CP2) (CP3), respectively The phase voltage V A is a common voltage when the speed detection signal FG obtained by waveform output through the waveform shaping unit 2 is read from the microcomputer 3 and the rising edge of the speed detection signal FG is raised. When the phase voltage V B is smaller than Vcom (a = “H”) and the phase voltage V B is smaller than the common voltage Vcom (b = “L”), the power transistor TR A is turned on and the The power transistor TR B (TR C ) is turned off and the phase voltage V A is smaller than the common voltage Vcom. When high (a = “H”) and the phase voltage V B is less than the common voltage Vcom (a = “L”), the power transistor TR B is turned on and the power transistor TR is turned on. A ) (TA B ) is turned off, the phase voltage (V A ) is greater than the common voltage (Vcom) (a = "L"), the phase voltage (V B ) is less than the common voltage (Vcom) In the case of (b = "H"), the power transistor TR C is turned off, and the phase rotation of the motor is performed by controlling the energization of each phase coil L A (L B ) (L C ) while repeating the process continuously. When an electric field is generated and all of the phase voltages V A and V B are larger than the common voltage Vcom at the rising edge of the speed detection signal FG (a = b = “L”), an emergency situation is detected. And discriminating and controlling all the power transistors (TR A ) (TR B ) (TR C ) to be turned off to stop the motor. 제1항에 있어서, 속도검출부(1)는 회전자 마그네트(N,S)에 연동되도록 속도검출 마그네트(N1,S1,N2,S2,N3,N3)를 60°간격으로 착자시키고, 임의의상(A상)이 최대 토오크를 발생 하는 위치(θ=-60°)로 부터의 일정위치(θ=-60℃)에 MR소자(MR)를 고정시켜 상기 속도검출 마그네트(N1)(N2)(N3)검출시 라이징에지 속도 검출신호(FG)를 발생시키도록 하는 것을 특징으로 하는 회전자 위치검출기가 없는 브러쉬 리스 직류모터 구동방식.The speed detecting unit 1 magnetizes the speed detecting magnets N1, S1, N2, S2, N3, and N3 at an interval of 60 DEG so as to be interlocked with the rotor magnets N and S. The speed detection magnets (N1) (N2) (N3) are fixed by fixing the MR element (MR) at a predetermined position (θ = -60 ° C) from the position where the phase A generates maximum torque (θ = -60 °). Brushless DC motor drive method without a rotor position detector, characterized in that to generate a rising edge velocity detection signal (FG) during detection. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임※ Note: The disclosure is based on the initial application.
KR1019900013722A 1990-08-31 1990-08-31 Brushless DC motor drive without rotor position detector KR920005448A (en)

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KR1019900013722A KR920005448A (en) 1990-08-31 1990-08-31 Brushless DC motor drive without rotor position detector

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Application Number Priority Date Filing Date Title
KR1019900013722A KR920005448A (en) 1990-08-31 1990-08-31 Brushless DC motor drive without rotor position detector

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KR920005448A true KR920005448A (en) 1992-03-28

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100486587B1 (en) * 2002-10-24 2005-05-03 엘지전자 주식회사 Locking detection method for sensorless bldc motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100486587B1 (en) * 2002-10-24 2005-05-03 엘지전자 주식회사 Locking detection method for sensorless bldc motor

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