收藏本站
AN07-00180-3E
4.2
How does the BLDC motor rotate?
The BLDC motor has three phases different by 120°. As shown in “ Figure 4-2 Names of the respective
elements ”, the phases are called the U -phase, V-phase, and W-phase respectively.
The switches on the driver circuit are respectively called U-High, U-Low, V-High, V-Low, W-High, and
W-Low and connected as outputs from the microcontroller. The hall elements for detection of the rotor
position are respectively called Hall-U, Hall-V, and Hall-W and connected as inputs to the
microcontroller.
V-High
U-Low
W-High
Hall-W
U-phase
Hall-U
V-phase
Hall-V
V-Low
W-Low
W-phase
Microcontroller
Figure 4-2 Names of the respective elements
By turning on/off the switches, the directions of the currents conducted to the motor are controlled. Two
of the three coils are set to positive or negative to generate a magnetic field for motor rotation.
The hall elements are used to detect the position of the rotor by 60° and the detection is represented with
1 or 0. According to their values, the switches are turned on/off. On detection of the hall elements, the
High side of the phase corresponding to it is turned ON, and on no detection, the Low side is turned ON.
“ Figure 4-3 120° conduction method time chart ” shows their relationship.
This way of driving control is called the 120° conduction method (square-weave control).
- 66 -
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
CANADAPT28 KIT ADAPTER CANDEMOBOARD 28PLCC
CAT24AA01WI-GT3 IC EEPROM SERIAL 1KB I2C 8SOIC
CAT24AA02WI-G IC EEPROM SERIAL 2KB I2C 8SOIC
CAT24C01ZI-G IC EEPROM SERIAL 1KB I2C 8MSOP
CAT24C03WI-G IC EEPROM SERIAL 2KB I2C 8SOIC
CAT24C04ZI-G IC EEPROM SERIAL 4KB I2C 8MSOP
CAT24C05YI-G IC EEPROM SERIAL 4KB I2C 8TSSOP
CAT24C08TDI-GT3 8KB I2C SER EEPROM TSOT 23
相关代理商/技术参数
CAN1671-15S 制造商:Techspray 功能描述:TECHSPRAY DUSTER 15 OZ FILL
CAN1747-10S 制造商:Techspray 功能描述:
CAN-24 制造商:Mencom 功能描述:
CAN4311111002451K 制造商:Yageo Corporation 功能描述:ANTENNA BLUETOOTH 2.45GHZ 制造商:Yageo / Phycomp 功能描述:ANTENNA, BLUETOOTH, 2.45GHZ
CAN4311111002701K 制造商:Yageo Corporation 功能描述:
CAN4311112001881K 制造商:Yageo Corporation 功能描述:
CAN4311113011582K 制造商:Yageo Corporation 功能描述:6230 Multilayer Ceramic Chip Antenna 制造商:Yageo Corporation 功能描述:6320 Multilayer Ceramic Chip Antenna
CAN4311115002451K 制造商:Yageo Corporation 功能描述: