The Theory And Process Of The Design For A BLDCM Motor Using DSP

The structure of BLDCM is similar to traditional DC motor,At the same time, it has the advantages of high efficiency and easily adjusting speed of AC motor. It has been widely used. This document presents the theory and process of the design for a sensor BLDCM motor using DSP. Regard how to structure the control system with DSP chip as the center in this paper .I first talk about the basic component part, the basic running principle, the running characteristic and the transfer function of the BLDG motor. Followed, it analyses the course of changing phase and distributing of PWM signal. Based on these facts, we present the sensor solution for BLDG motor, design the hardware system and software system. The part of hardware design first expounds the whole design. Then the design of several primary circuits is discussed and the choice of some important electronic components and their parameters in these circuits is analyzed. The part of software design also first discusses the whole design. Then some problems on software realization are dissertated. In the end, I simulate the BLDCM using Matlab/simulink software which proved that the control system works well as it was expected.