Research and development of multiple-axis motion control board based on DSP

To the key resolution of the computer numerical control system,this paper designs the hardware structure of motion controller using digital signal processor(DSP),LM628 and PCI.In order to improve the efficiency and dependability,a dual-port RAM was chosen.It used encoder position feedback loop composition and fuzzy control algorithm for precise control of position error,adopted opto isolation to reduce the interference from the external circuit,and applied Visual C + + procedures for the preparation of a visual interface to facilitate users to debug and modify the program.The test results demonstrate that it can accomplish the instruction and realize motion tracks,and has the character of flexibility and opening.