Based On Dsp's Onboard Computer Design

This paper is based on the project of "XX gliding extended range projectile technology". A projectile computer system was designed based on a TMS320C6747 DSP core processor, and the system's hardware and software were completed, as well as the system's debugging and the test. During the research the following work was completed.(1) For the overall program design. The performance requirements of the projectile computer system to achieve targets and the fulfilling program were determined based on the overall structure of the layout and control scheme of the gliding extended range projectile.(2) The printed circuit board was designed and produced. The schematic design and PCB fabrication of the projectile computer system were completed base on the TMS320C6747 DSP core processor, and the circuit board was tested.During the hardware design, the anti-high and anti-jamming overload performance were taken into account.(3) The software design and debugging. The system's software design was completed with modular design method, and burned into the DSP to debug by a emulator. The system had the function of serial interface communication, A/D module's data acquisition, Pulse Width Modulation output, Nand Flash Bootloader and SDRAMs'reading and writing.(4) System test and debugging. The hardware circuit was tested, as well as the function of each software module, and completed the running experiment of some basic function such as procedure downdoading, bootloader, serial interface's data acquisition and sending and the servo control. The results showed that the design was completed system's requirements.This paper could offer technical supports of the research of projectile computer systems that based on DSPs, some research results can be applied in artillery shells, rocket bombs, extremity sensitive bombs and other conventional weapons.