采用DSP+FPGA的三轴运动控制器设计

为了满足开放式数控系统的需求,设计了一种基于TMS320F28335浮点型数字信号处理器(DSP)和EP2C8F256C6现场可编程门阵列(FPGA)的通用三轴运动控制器.详细介绍该运动控制器的整体结构、硬件电路设计、插补算法、FPGA各分模块的构成及实现,并给出了相关设计的软件结构框图.该控制器具有结构简单、通用性强、模块化高等特点,能够很好地满足运动控制系统的实时性和精确性.

Design of Three-Axis Motion Controller Based on DSP and FPGA

In order to meet the demand of open CNC system, a general three-axis motion controller was designed based on TMS320F28335 floating-point digital signal processor(DSP)and EP2C8F256C6 field programmable gate array(FPGA).The overall structure of motion controller, the design of hardware circuits, the interpolation algorithm as well as the compostion and realization of FPGA modules were introduced in details, and the relevant design software structure diagram was presented accordingly. The motion controller has the characteristics of simple framework, high versatility and modularization, and can well meet the real-time and the accuracy of the motion control system.