Design of Permanent Magnet Brushless DC Motor Control System

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The brushless DC motor has been promoted rapidly with the rapid development of the power electronics technology,
microelectronic technology and rare earth permanent magnet materials. The brushless DC motor has a series of
advantages of small volume, light weight, high efficiency and energy saving, easy speed regulation, simple structure,
reliable operation and easy maintenance, etc, and it has been widely used in all areas of industrial control now. This
paper mainly introduces the working principle of the permanent brushless dc motor and Microchip's motor dedicated
digital signal controller—dsPIC30. The brushless DC motor control solutions with dsPIC30F4012 for control chip is
proposed according to the fans and pumps load requirements, the hardware circuit is designed, and part of the source
program is given. By designing hardware, writing control software, debugging and improving experimental system, it
can be concluded that this system has superior control performance, reliability, and the product design requirements
are achieved.