Research Of Laser Processing Control System Based On DSP&FPGA

Laser processing technology has been gained rapid and enough development as it's appeared so many years. And the tightly related technology of motion-control of it has been become the key technology in this field. The motion-control system which based on digital signal process(DSP) and field programming gate array(FPGA) has high control-precision, good real-time and high interfere-resistance, and it's popularly applied in control system nowadays. This paper take the focus on the characteristic of laser processing system, and do some deep research on the processing control system in this field, and also design the hardware system. The idea of using software designing hardware by FPGA realizes this system based on DSP and FPGA. This system can implement the precision interpolation function and realize the ascending,descending and invariable motion in two axis. It can achieve the request in this field. The main innovations of the dissertation are given below:(1) Analyzing and studying the principle and the system structure of digital and signal processor and field programming gate array, and also giving the system structure diagram of them.(2) Analyzing and realizing the clock circuit,power circuit and JTAG test interface circuit which around the main controller DSP. And it also analyzed the interference of it. Meanwhile, it also gives the algorithm based on DSP.(3) It has realized the PWM wave output which its frequency rang between 100HZ and 20KHZ and its occupancy range is from 0 to 100% by use of FPGA.(4)Based on the hardware description language (HDL) and the development environment of the hardware, it has realized many modules in the precision interpolation of the motion-control system. At last, through the characteristic of the output, it concluded that the outcome is correct and the system is feasible in practical.In the last, we give some suggestion and thoughts on the continuous research.