介绍了数字信号处理芯片TM S320L F2407 的结构和性能, 研究了PWM 控制和A öD 转换技术, 采用反电势法实现了无刷直流电机的无位置传感器控制, 并给出了相关的实验结果。 关键词 无刷直流电机 无位置传感器控制 数字信号处理器 Abstract The st ructure and perfo rmance of digital signal p rocess ch ip2TM S320L F2407 are int roduced, and the techniques of PWM cont ro l and A öD t ransfo rm are studied. The po sit ion2senso rless cont ro l fo r brush less DC mo to r based on back2EM F method is p resented, and the cont ro lmethod is verified by the result s of experiment. Key words Brush less DC mo to r Po sit ion2senso rless cont ro l DSP