Hardware circuit design of NC system based on ARM and FPGA

This paper presents the hardware design of three-axis NC system based on embedded system, designs the ARM (advanced RISC machine) + FPGA (field programmable gate array) hardware architecture, builds the software development environment, and accomplishes the communication program between ARM and FPGA. All of these provide excellent development platform for the application program developers. According to the requirement of three-axis NC system fine interpolation and complex I/O control, this paper accomplishes internal logic design of FPGA, realizes the fine interpolation pulse transmitting of NC system, receives the feedback pulse signal of encoder and extends many I/O ports to fulfills complex I/O control of three-axis NC system.