Of Dsp-based Power Inverter Digital Control

400Hz inverter is a special powers supply used in the aeronautical system. There are some disadvantages such as too many control elements , unflexible, bad consistency. Due to all of this disadvantages of analog control mode used in current products,the implementation of digital controller is described in this paper.The system is controlled by a TI TMS 320LF2407A DSP.The paper will give a comprehensive introduction about digital controller of 400HZ inverter supply. The application of digital PID is the paper's emphases. At the same time ,we give a relative introduction on fuzzy PID.First, the devolpemnt of inverter power is discussed. On the basis of this ,we gived the hardware design project based on TMS320LF2407A. Then, two arithmetic ,digital PID and fuzzy PID to be discussed. We used the simulating software-MATLAB to simulatie all of this two arithmetic in order to confirm parameter of the system. Last ,we gived the software design. The program is wrote using C and complie. At a result, the readability and speed of the program is improved better. At the same time , we enhanced the system'reliability using the technique of anti-jamming in the program disign.