KR970077909A - Rotor position detection method of BLDC motor - Google Patents
Rotor position detection method of BLDC motor Download PDFInfo
- Publication number
- KR970077909A KR970077909A KR1019960015949A KR19960015949A KR970077909A KR 970077909 A KR970077909 A KR 970077909A KR 1019960015949 A KR1019960015949 A KR 1019960015949A KR 19960015949 A KR19960015949 A KR 19960015949A KR 970077909 A KR970077909 A KR 970077909A
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- KR
- South Korea
- Prior art keywords
- rotor
- sensor
- bldc motor
- signal line
- electromotive force
- Prior art date
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- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
본 발명은 BLDC 모터에 있어, 회전자의 위치를 감지하여 회전자의 위치에 따라 적절한 모터의 제어가 이루어지도록 하는 것으로, 특히 물리적인 센서의 구성없이 역 기전력을 검출하여 회전자의 위치를 판단할 수 있도록 한 비엘디씨(BLDC) 모터의 회전자 위치 검출 방법에 관한 것이다.The present invention relates to a BLDC motor which senses a position of a rotor and controls an appropriate motor according to the position of the rotor. In particular, a back electromotive force is detected without using a physical sensor to determine the position of the rotor And more particularly, to a method of detecting rotor position of a BLDC motor.
종래 BLDC 모터의 회전자 위치 검출 방법에 있어서는, 회전자의 위치를 감지하는 위치센서가 회전자와 고정자 사이의 에어 갭에 장착되기 때문에 회전하는 회전자에 의해 위치센서가 파손될 가능성이 높고, 위치 센서의 회전자 위치 감지 신호의 전달을 위한 별도의 신호선 및 커넥터가 필요하며, 상기 신호선의 노이즈 제거를 위한 필터가 필요하게 되어 구성 요소가 복잡해지며, 또한 이에 따라 모터의 제어에 있어 신뢰도가 저하되는 문제점이 수반된다.In the conventional rotor position detecting method of a BLDC motor, since the position sensor for sensing the position of the rotor is mounted in the air gap between the rotor and the stator, there is a high possibility that the position sensor is broken by the rotating rotor, A separate signal line and a connector for transmitting the rotor position sensing signal of the signal line are required and a filter for removing the noise of the signal line is required. This makes the components complicated, .
본 발명에서는 상기에서와 같은 문제점을 해결하기 위하여 회전자의 회전에 의하여 각 상에서 발생되는 역 기전력을 검출하여 카운트하고, 카운트 되어진 값을 일정 시간 내의 설정된 값과 비교하여 회전자의 위치를 검출하도록 하므로서, 물리적인 위치 센서의 구성 없이도 회전자의 위치를 감지할 수 있게 되는 바, 센서를 구성할 수 없는 경우 또는 일반적인 센서레스 구동 방식의 전자제품등에 적용할 수 있다.In order to solve the above problems, the present invention detects and counts the counter electromotive force generated at each angle by the rotation of the rotor, compares the counted value with a set value within a predetermined time, and detects the position of the rotor , It is possible to detect the position of the rotor without the configuration of the physical position sensor, so that it can be applied to the case where the sensor can not be constructed, or the general sensor less drive type electronic product.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.
제 1 도는 본 발명에 있어 BLDC 모터의 전체적인 구성을 보인 블럭도, 제 2 도는 본 발명에 있어 역 기전력 검출부의 상세한 구성회로도, 제 7 도는 본 발명에 있어서, 각 상의 파형검출을 위한 카운트과정을 보인 플로우 챠트, 제 8 도는 본 발명에 있어서, 카운트된 각 상의 파형을 일정값과 비교하여 회전자의 위치를 판단하는 과정을 보인 플로우챠트.FIG. 1 is a block diagram showing the overall configuration of a BLDC motor in the present invention, FIG. 2 is a detailed circuit diagram of a counter electromotive force detecting section in the present invention, and FIG. 7 is a circuit diagram showing a counting process for waveform detection of each phase FIG. 8 is a flow chart illustrating a process of determining the position of a rotor by comparing a waveform of each of the counted phases with a predetermined value in the present invention. FIG.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960015949A KR970077909A (en) | 1996-05-14 | 1996-05-14 | Rotor position detection method of BLDC motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960015949A KR970077909A (en) | 1996-05-14 | 1996-05-14 | Rotor position detection method of BLDC motor |
Publications (1)
Publication Number | Publication Date |
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KR970077909A true KR970077909A (en) | 1997-12-12 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1019960015949A KR970077909A (en) | 1996-05-14 | 1996-05-14 | Rotor position detection method of BLDC motor |
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KR (1) | KR970077909A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030044165A (en) * | 2001-11-29 | 2003-06-09 | 디씨티 주식회사 | Position Sensor of Planar Linear Pulse Motor System |
KR100858540B1 (en) * | 2002-07-03 | 2008-09-16 | 엘지전자 주식회사 | Method for controlling BLDC motor for inverter airconditioner |
-
1996
- 1996-05-14 KR KR1019960015949A patent/KR970077909A/en not_active Application Discontinuation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030044165A (en) * | 2001-11-29 | 2003-06-09 | 디씨티 주식회사 | Position Sensor of Planar Linear Pulse Motor System |
KR100858540B1 (en) * | 2002-07-03 | 2008-09-16 | 엘지전자 주식회사 | Method for controlling BLDC motor for inverter airconditioner |
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