基于缓冲区的两级插补器的研究与设计  

Study and Design of two Stage Interpolator Based on Ring Buffer

作　　者：徐勤朋 刘荫忠[2] 

机构地区：[1]中国科学院研究生院,北京100049 [2]中国科学院沈阳计算技术研究所,沈阳110168

出　　处：《组合机床与自动化加工技术》2014年第3期9-12,共4页Modular Machine Tool & Automatic Manufacturing Technique

基　　金："核高基"国家科技重大专项(2012ZX01029-001-002)

摘　　要：为了提高数控系统设计的灵活性并且降低加工过程中对内存的需要,提出了一种基于环形缓冲区结构的两级插补器实现方法。第一级插补算法采用了B样条参数曲线插补算法,第二级插补算法,第二级插补算法采用DDA(Digital Differential Analyzer)直线插补算法。两级插补器间的数据通信使用了可配置的缓冲区结构。测试结果表明,在新的设计下,缓冲区空间的使用量少,通信时延小于1.93μs,可以满足高档数控系统的加工要求。To improve the flexibility in the design process of CNC system and reduce the requirement of memory space in the CNC milling process,an implementation method of two stage interpolator based on ring buffer is presented.Firstly,the B-spline curve with shape parameters was adopted in the first interpolator method ; Secondly,the Digital Differential Analyzer method,which is called DDA interpolator,is applied in the second interpolator.The communication buffer between them can be configured.The experiment result shows,in this new design,the requirement of buffer is reduced,and the maximum delay is less than 1.93μs.Thus,it can met the requirements of CNC machine tool.

关 键 词：两级插补器 环形缓冲区 DDA B样条参数曲线 

分 类 号：TH166[机械工程—机械制造及自动化] TG65[金属学及工艺—金属切削加工及机床]