Research of NC Program Processor in Embedded Control System
NC program processor is an important module in Computer Numerical Control (CNC) system. NC program processor is divided into interpreter and look-ahead function. In the paper,the macro variable computation,the geometric transformation and the look-ahead pre-interpolation which is widely adopted in machining small-line blocks are introduced for their importance in modern CNC system. The former two works are executed in the interpreter,and the last one is performed in look-ahead pre-interpolation function. A method for five formats of computing macro variable is proposed as well as the proportion and rotation transformation in the interpreter. Then,four conditions including angle constraint between two NC blocks,chord constraint rule,length of the small-line and monotone rule are also discussed. NC program processor is implemented in an embedded control system based ARM (advanced RISC machine),DSP (digital signal processor) and FPGA (field programmable gate array) processors.Experiments show the system is reliable.
interpreter look-ahead CNC embedded control systems
Qikui Wang Wei Li Youdong Chen Hongxing Wei Yong Zou
College of Engineering,China Agricultural University School of Mechanical Engineering and Automation,BeiHang University Beijing Institute of Petro-chemical Technology
国际会议
The Fifth IEEE International Symposium on Embedded Computing(SEC 2008)(第五届IEEE国际嵌入式系统计算会议)
北京
英文
276-281
2008-10-06（万方平台首次上网日期，不代表论文的发表时间）