关键词: 机床, 数控系统, 可重构, ARM, DSP, 实时操作系统, 现场可编程门阵列, SRAM

Abstract: A hardware development platform for the computer numerical control(CNC) system was built based on the ARM and the DSP. It is characterized by the high integrity and robust stability, meets the requirements of the production process on high speed and high precision. The reconstruction time gap problem in the dynamic reconstruction of the FPGA was solved by using the SRAM and the reconstructable design based on the FPGA was realized to enhance the flexibility of the system. The introduction of the embedded realtime operation system RT-Linux and the layered software design enhances the operation stability of the CNC system and the realtimeness of the task dispatching. The practical application of the developed CNC system in the CNC machine tool proved the feasibility of the system.

Key words: machine tool, computer numerical control(CNC) system, reconfigurable, ARM, DSP, real-time operation system, field programmable gate array(FPGA), SRAM