International motor experts assert that the 21st century is the century of permanent magnet brushless dc motor is widely applied, especially in the field of small motor, brushless dc motor will dominate. Now, thanks to the growth of the market need, face 3 a (Industrial automation, office automation, home automation), permanent magnet brushless dc motor power coverage had breakthrough micro-motor power line, from milliwatts to several kilowatts, main application fields include: in computer peripherals, office automation equipment, the application of digital consumer electronics from the number, the brushless dc motor is used the most areas, have occupied the irreplaceable position. For example, in the digital printer, floppy disk drive, hard drives, CD -ROM and DVDROM such as cd-rom drives, fax machines, photocopiers, tape recorder, the motion picture camera, high-fidelity audio recorder and record player control of main shaft and affiliated movement, etc. Single phase brushless dc fan also in computer peripherals and office automation equipment and other automation equipment get extensive application, a lot of fan market away from the original communication.
