改进插补算法在数控雕刻系统中的应用  

Application of improved interpolation algorithm in numerical control engraving systems

作　　者：杨帆[1,2] 廖知[1] 肖贝[1] 杜四平[1] 

机构地区：[1]武汉工程大学电气信息学院,湖北武汉430073 [2]武汉工程大学湖北省智能机器人重点实验室,湖北武汉430073

出　　处：《华中科技大学学报（自然科学版）》2011年第2期27-31,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：湖北省科技攻关项目(2007AA101C19)

摘　　要：根据雕刻机控制系统的设计需求,采用TI公司的32bit定点数字信号处理器TMS320F2812作为下位机控制系统核心处理单元,并与FPGA相结合取代目前市场上主流的单片机与高速运动控制芯片相结合的联机控制.运用模块化设计思想进行了雕刻机控制系统软硬件设计.在轨迹控制中,运用快速数字积分插补算法替代普通数字积分插补算法,使控制器对插补过程的运算效率更高,减小了控制器的运算压力;试验证明了所设计的基于DSP和FPGA的三维雕刻机数控系统方案及数字积分改进算法的可行性和可靠性,雕刻机的加工速率提高了大约20%.According to the design specifications of engraving machine control system, TI 32 bit fixedpoint digital signal processor TMS320F2812 was adopted as core processing unit of the lower computer＇s control system, combining with the FPGA to replace mainstream on-line control solution which combines single-chip and high-speed motion control chip together. Modular design philosophy was used to design the software and hardware of the system. Rapid digital integral interpolation algorithm was substituted for ordinary digital integral interpolation algorithm in trajectory control for higher computation efficiency and lower controller pressure. Test in practice proves the feasibility and the reliability of the design base on DSP （digital signal processor） and FPGA （field programmable gata atray）, and the engraving machine processing speed increases by approximately 20%.

关 键 词：雕刻机控制系统 处理器 轨迹控制 快速数字积分插补算法 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]